It’s just magic watching a master doing/enjoying ,

@olfoundryman8418

3 жыл бұрын

andy, Thank you... Martin

No post-machining required 👍😎 These deserve to go to the Pool Room.

@olfoundryman8418

3 жыл бұрын

Oval, Hopefully by now they are driving around Australia... Martin

Your work is like a piece of art . You are so skillfull and your attention to detail is amazing. THANKS

@olfoundryman8418

2 жыл бұрын

Ray, Well, you know what Jag owners are like - always demanding perfection (and never getting it 😊) Still, I owned Jags for about 30 years so any idea of Jags = perfection seems a little alien😊... Martin

Thanks for sharing , on the video prior to this I took your advice on rapping side to side and wished I had done this 5 years ago. I took my worse pattern that was bad to hook in the sand and it came do it cleanly, I learn something brand critical every time you do this so thanks

@olfoundryman8418

6 жыл бұрын

Clarke, Usually I rap in all directions but I have found that some jobs are better only rapped a particular way. Unfortunately it can take some time to find out what that particular way is for any given job. However as a crude generalization for work with thin sand sections avoid rapping across that thinness, along it Ok, with lettering very little rapping and only very gently. with cylinders is seems rap longitudinally and only very little if any diametrically, for exposed pockets first reinforce with flat head nails and then rap away, for deep hidden pockets that are not reinforced just pray! I do note that many people do not rap as I do at all but rather they tap the pattern up and down I do not know where this comes from but I have never seen an old timer do it. The use of air vibrators attached to the pattern (plate) or to the supporting boards in a traditional moulders bench is common and of much help...Martin

Another excellent video, they always seem to short. Thanks again.

@olfoundryman8418

6 жыл бұрын

Thomas, Too short! now there is a funny thing, I started at 52 minutes of shot video and struggled to get it down to under 18. I always feels that they should be shorter to avoid people getting bored and switching off. Perhaps in view of your comment I shan't be so concerned with shortening them in the future. Nice to hear from you again... Martin

@andycoombes

6 жыл бұрын

I'd agree with Thomas. Anyone who has found your videos and watched them is hungry for detailed knowledge - and every moment is a feast for the hungry. Those of us who came up through the apprenticeship schemes knows just how much we learned just by watching.....and, indeed, by watching it all go horribly wrong from time to time!

You do well at this Martin and I like the way you're sand holds up to even when you spray compressed air on it nothing gives way it's nice and sturdy

@olfoundryman8418

6 жыл бұрын

Brian, I do have to be careful with that compressed air. Its set at just 15 Psi and even then I squeeze the control lever very gently to start with to avoid any initial surge of air. Also I need to avoid any sharp edge type areas of the cavity as they can blow away all to easily, same with those tricky areas of some moulds that seem impossible to ram firmly. However when it comes to delicate moulds like plaques with lots of lettering I am very careful indeed only just opening the control and perhaps also holding the air gun a fair way off the surface, I find this quite nerve wracking because if you blow even part of one letter away the mould is ruined and its start again!... Martin

@briangingras5886

6 жыл бұрын

Olfoundryman by the way I have sand casted myself I'm a novice if you'd like to take a look take a look at my channel you'll see I built an electric furnace and I also bought a 4 oz Crucible and then also a 6-ounce Crucible which I have not used yet I do small castings

Another excellent video as always. Thanks.

@olfoundryman8418

6 жыл бұрын

David, Thanks for your comment... Martin

yet another class casting Martin! thanks for sharing :-)

@olfoundryman8418

6 жыл бұрын

JB, No worries mate, than ks for the comment... Martin

Swdweeb sent me here. I am in QLD and happy to have found this channel. Subscribed!

@olfoundryman8418

5 жыл бұрын

Sparkie Ah, one of our northern cousins - greetings from the cold south! Bless Swdweeb I will send him a thank you. And thank you too for the sub! … Martin

@sparkiekosten5902

5 жыл бұрын

Cheers Mate!

As always thx for all the videos. Im learning sooooooooooooo much. :) All thumbs up!

@olfoundryman8418

6 жыл бұрын

Han, No problem mate... martin

@hansolo5967

6 жыл бұрын

Hey Martin. What is the exact name of the powder you are using (chemical and producer)? Thanks. ;)

@olfoundryman8418

6 жыл бұрын

Han, I thought I had replied to you but can't see a reply so I will do so again. I assume that you meant the powder that I put on top of the feeders just after casting. It is an exothermic compound made by "Foseco" it is called "Ferrux NF"... Martin

Thank you. Craftsmen like you are disappearing. I don't thank video technology for much but it really can serve a purpose.

@olfoundryman8418

Жыл бұрын

MARK, We old-timers have a habit of leaving the building. It may be sad but renewal is necessary. It is important though to try to pass on some of the accumulated knowledge.... Martin

Thanks once again Martin, like the bit about ramming too near the pattern, I do quite a few plaques & sometimes get a "double take" on some of the letters, most annoying, I clean them up with my mechanical dentist drill but I'll try ramming better now,love the metal lifting guides too.

@olfoundryman8418

6 жыл бұрын

Head, Yep, too close is a problem as you say a double image. It can sometimes occur too if your pattern is very close to the edge of the box Even worse if you actually strike the (soft wooden) pattern, out with the car bog again! Lifting guides crude but effective, but wait till you see the one I use when I make some pistons in a month or three its a 5 inch or so lift and I have a real good guide for that... Martin

After watching the "slo mo" I believe that a bubble of gas did not come out through the feeder. The hollow core did fill with metal and the gas generated by this core did push the metal back out of its hollow centre. This caused the level in the feeder to suddenly rise. The gas then escaped out the core print and through the mould as it should have, gas pressure thus relieved the metal then ran back into the centre of the core causing the feeder level to drop again... Martin

@GrezArifiyan

3 жыл бұрын

what do you put in the feeder martin? is it flux or something else?

@olfoundryman8418

3 жыл бұрын

@@GrezArifiyan , The reddish powder that I put on the top of the metal in the feeder is an exothermic compound called "Ferrux NF" It is made by Foseco. Its job is to catch fire and generate a lot of heat, this keeps the metal in the feeder liquid for longer so it is better able to feed the solidifying casting below....Martin

Hi Martn, Did I see correctly that you cut the runner to be below the gate? Also what material are you using for the core? I assume it comes out of the part easy enough. Same question about the sprue and feeder extensions, what material are these made from and is it a problem getting the aluminium out of them? Does the shrinkage during cooling allow all of these parts to release? Thanks, Perry

@olfoundryman8418

6 жыл бұрын

Perry, Yes the runner is cut in the drag gate in the cope this is the standard "good way" of doing it and obviously the runner has to pass under the gate to get a connection the runner extends past the gate. The core was provided buy the customer but it is resin coated sand, many professional core makers make and keep a range of sizes of "stick" core in stock and my customer got this core from one of them, it came in about 18 inch lengths. I make similar core my self having the resin coated sand always in stock and over the years I have made a number of aluminium moulds to make different sized cores mainly for throttle bodies that are regular jobs. My video of making throttle bodies part 1 shows some cores being made. Usually these cores are made very thin hence they are often called "shell cores" the thinness means the bond in them burns out fairly quickly when the metal gets around the core so breakdown and thus removal from the casting is usually good. However if the cores are a bit smaller they tend to be solid and then if not much metal is cast around them break down can be a bit poor. I make the sprue and feeder extensions myself out of this resin coated sand. The feeder extensions are made from a 4% resin sand (strong) and are tapered so they will just pull off the top of the feeder and thus I can reuse them by as many as 10 times (the little slits cut in the top face of them are my way of counting how many times each one has been used) The sprue extensions are tapered the other way and won't pull off so I make them from 2% sand (much weaker) and cut side slits in them so I can break them in half to remove them, obviously I get just the one use from each one. I must add that this sprue extension is far from an optimum shape something I hope to fix in the near future....Martin

@swdweeb

6 жыл бұрын

Thanks, I'll have to go watch that video. This type of core seems a lot better than just trying to pack sand into a form.

@olfoundryman8418

6 жыл бұрын

Perry, It is a very strong core than can stand a lot of handling. It does not draw the damp and can thus be made well in advance and stored, break down is usually good. It is my favourite method of making cores but it does require a metal core mould as the mould has to be at about 180 deg C to cure the resin in the sand. The petrobond core you used seemed to work ok though or did a break a few? I am amazed that you can make core like that with petrobond it would be next to impossible with green sand they would break when you tried to put them in the mould although I have had a little success with making a green sand core and then oven drying it... Martin

This is amazing. Gives me hope for some of the crazy stuff I want to do being possible. :D

@olfoundryman8418

4 жыл бұрын

Oh, All things are possible with practice patience and persistence - good luck with what you wish to do....Martin

@rossilake218

3 жыл бұрын

Martin, That was well said, tell the kids that! Lol. Great foundry work. Upon further inspection, I see you cast boss for fuel injectors. I want a set of 12.

Thanks for sharing

@olfoundryman8418

6 жыл бұрын

Rabih, Sharing is my pleasure... Martin

Another very informative vid Martin. You say split patterns are not your choice. How would you prefer the pattern be made. I have now seen a number of different single throttle bodies for the same V12 and will consider making another pattern.

@olfoundryman8418

6 жыл бұрын

Mike, It is just that I don't usually work with split patterns. They are a bit harder to make than solid ones and getting the fit of the locating pins within the pattern is a bit problematic, too tight at the split halves won't come apart when they should and too loose and the two halves don't locate as well as they should and you start to get miss match problems. Also you have to pull both halves from their respective mould half, to me this seems like extra effort. Of course you do need good long pins on your boxes to work with solid patterns and you also need a good oddside to set the parting line up correctly if more than one or two castings are required. You can see how I use the solid pattern and matching oddside in part 2 of my three part throttle body video. However some people consider it easier to make a split pattern rather than a solid pattern and an oddside. While out of habit I prefer the solid pattern I am quite happy to work with a split pattern. However if you wish me to cast from any pattern you make please send me drawings of the pattern, preferably 3d solid type drawings so I can check them out, I have been asked to cast some impossible stuff over the years and a quick look at drawings can prevent a lot of heartache... Martin

@downundermike8889

6 жыл бұрын

Thanks Martin. I understand. I will check out the other video.

Twelve castings for one job, that'll teach him for having a 12 cylinder. Nice work Peter

@olfoundryman8418

6 жыл бұрын

PGS, Anyone with an old E type has money (or should that be "had" money) Not only are there the 12 throttle bodies but there are 12 little elbows to cast yet plus a large plenum type box plus all the injectors and fuel rails and control gear etc. Hmm yes, definitely "had" money. I used to drive jags (not E types) but I kept taking the medication and the idea went away.... Martin

@pgs8597

6 жыл бұрын

Yes Martin, something to be said for the bland but reliable cars coming out of Japan and now South Korea. Peter

@olfoundryman8418

6 жыл бұрын

PGS, Started with 2.5 Riley, then 3.4 Jag plus series 1 Landy (with Rover 105E 6 fitted He he) Then 4.2 jag plus Austin Champ all held for many years then medication kicked in and I bought a new Magna 18 years later sold her and now have 3.6 Subaru liberty not manual like I prefer but have got very used to the CVT and I like the car, Bland I guess but then I have yet to try it in sports extra mode...Martin

Very nice work as usual. Your level of competence amazes me. I just hope you don't breath in too much of that dusting powder that gets blown around.

@olfoundryman8418

3 жыл бұрын

Micheal, Thank you for your comment. That parting agent dust is NOT talc if that is what concerns you. It is actually Calcium Carbonate and I understand that the human body tolerates it reasonably well (a little extra calcium is probably good for the bones😊).... Martin

Wow! You have a lot of practical information to impart and I have learned more from you in two videos than in the last six, plus four books! Combining the knowledge gained from those books with your videos is extremely helpful. Please make more. If I can make a suggestion, please describe the elements you use; e.g. the 'facing sand' which is quite different from the filler, or the 'exothermic', which I don't remember from my reading; what is your 'exothermic'? I am learning so much just from watching you. Thanks.

@olfoundryman8418

5 жыл бұрын

Thomas, The powder that I put on top of the feeders immediately after I have poured is an exothermic called "Ferrux NF" it is made by "Foseco". It catches fire and generates a lot of heat. This keeps the metal in the feeders liquid for longer so they are better able to provide liquid feed metal to the solidifying casting underneath. Yes, it is like thermite, but I do not know exactly what is in it for it is a propriety product. But I would guess at some iron oxide from the colour and no doubt some sort of metal powder. There is also something in it that expands when heated to form an insulator I have done a video on the preparation of my facing sand ..kzread.info/dash/bejne/fm2lspVyqZarZM4.html I provide these videos in the hope that people will get information from them and information that I believe to be the right way or at least the "rightest" way I know... Martin Martin Reply · 1

@tdubveedub

5 жыл бұрын

@@olfoundryman8418 Thanks for this information, and all that you are doing to promote this valuable enterprise. I figured out what the exothermic does, but don't have a background in chemistry to know how to make it without blowing up the neighborhood, ha ha. Again thanks for all you are doing.

I've just found your channel and have been enjoying your videos. I've just started doing foundry work mainly for model engineering. I've been making my own wooden moulding boxes but can you tell me where you got your metal ones from. They look good to use. I'm in Melbourne. Thanks Luke

@olfoundryman8418

6 жыл бұрын

Luke, I too am in Melbourne, outer eastern suburbs. Wooden boxes, sigh, memories of many years ago. Everyone starts with them and, well, they are a crock in Oh so many ways. But I still use them sometimes for work out side the size capability of my metal boxes. Years ago I realized that if I was to get serious and make a reasonable number of castings at any one time I needed several boxes that were the same. So I set about making my own metal boxes. There has been 3 or 4 iterations of them to get to where I am now, I have in mind to do a video of my journey through moulding boxes complete with recommendations for a versatile design that can be expanded to cater for that one off larger job, Trouble is little time and much to do so the video might be a while off. At first I sand cast the 80 box sides needed for 10 boxes using a variety of wooden boxes. Took a long time! Then I developed a gravity die for the sides for the boxes I use now - made 160 sided in a day! I still have the die. PM me with an email address or a phone number so (if you wish) you can come out for a look see....Martin

@traindriverluke

6 жыл бұрын

Thanks for the reply Martin i have sent you a PM.

That was brilliant. Where can I obtain complete vertical sets for my Ronart Jag?

@olfoundryman8418

5 жыл бұрын

David, Thank you for your comment. Sorry for the delay in replying, I had to dig out the contact details for the customer for those throttle bodies. I also did 12 little elbows (video yet to be done) and the idea is that they have a large plenum chamber to which the 12 elbows connect (6 a side) and the 12 throttle bodies hang down from these elbows. Presumably this all fits between the banks of 6 cylinders. I would guess that it makes the engine somewhat higher than standard so I do not know if it will all fit under the bonnet of a Ronart but I guess it does fit under the bonnet of an E type. Like anything Jag (I used to own a couple!) the exercise is not for the financially faint hearted but I guess owning a Ronart you would be used to that 😏. What I can do for you is put you into contact with my customer. If you come back to me on mmwestuppercase2hotkey.net.au with your contact details I will send them on to my customer and thus he can decide if he wishes to contact you... Martin

How much air pressure are you using on cleaning your molds of loss sand and powder? I find your videos very informative thank you.

@olfoundryman8418

6 жыл бұрын

William, Regarding the air pressure please see my reply to a comment by Brian Gingras Its is a little way below this.I am glad that you find the videos informative that's the way I try to make them..... Martin

I have now watched about 15 or so of your vids and learned so much. Some of the small details have had such a big difference in the results,. Thank you . But one thing I have not bumped into is an explanation of the powder that you put on the rising metal as soon as you have poured. .What is the powder and what does it do.? Again, thank you for the small but all important details.. Am now in the middle of building a grinder for facing sand..

@olfoundryman8418

4 жыл бұрын

Geoff, The powder I put on the top of the metal in the feeders is an exothermic - its sort of like thermite - its job is to catch fire and generate a lot of heat . This keeps the top of the feeder liquid for longer so it is better able to feed the solidifying casting underneath. It is called Fedex NF and it is made by Foseco….. Martin

@geoffgwyther7269

4 жыл бұрын

@@olfoundryman8418 thanks a bunch This may be hard to find as I live in the UK. One needs a licence to sneeze , over here. Please keep up the good work. Really enjoy the vids.

@olfoundryman8418

4 жыл бұрын

Geoff, Sneeze! - You are allowed to sneeze?😊 I must write a stiff note to your PM. Foseco are UK company. Out here it comes in 25 KG bags and that would last a hobby foundry just about for life.... Martin

So nice that the bubble didn't cause a short pour, too.

@olfoundryman8418

6 жыл бұрын

Ron, Yes it could have, it could also have left a trail of "bubble damage" if had risen through the casting such trails often mysteriously leak. However I am reasonable convinces thet the bubble just pushed the metal out of the hole, in the core and then escaped through the core prints with out doing any damage. They have a l been machined apparently and no problems were found customer was very happy he commented on how well they machined... Martin

@ronyerke9250

6 жыл бұрын

Oh good. :-)

How did you manage to get such a smooth shiny surface finish. Please let us know.

@olfoundryman8418

3 жыл бұрын

Challa, Several ways, The combination of pouring basin and tapered sprue means the casting fills in as turbulent free a manner as possible Not having excessive mould height (and thus sprue height) Not pouring too hot or too fast Careful attention to blowing any loose sand out of the mould But mainly by the use of a very fine facing sand that I prepare especially by grinding some of my sand finer in a sort of crude flour mill..... Martin

G'day Martin, looks like early next year I'm headed to VIC for work for a week. hopefully will finally catch up then! I'm back here today because I'm picking up a V12 Jag engine today, and remembered this casting series from last year. are these sold anywhere mate? cheers

@olfoundryman8418

4 жыл бұрын

JB, I will put the kettle on! Just picked up a Jag engine - Oh dear 😱 - as a 30 year veteran of driving Jags you have my sincerest sympathies! No, these are not sold they were a one off for the jag owner concerned. Another owner did get the OK to use the patterns to get a set made for himself but I think the all up price - and there is way more than these bodies to the full set up - proved way to much. Perhaps when you get here in 2020 we can discuss contacting the original owner the castings were for... Martin

Could you not get a cheapo second hand drill press (small type) and use that kind of thing for vertical lifts? Or maybe bodge something else. Just a thought, great work as always.

@olfoundryman8418

6 жыл бұрын

Rohan, Funny that you should say that! I have a job coming up that requires a lift of 5 plus inches. I have done it by hand and the result is driving round the roads in an antique car. It was a very heavy piston for a single cylinder 10 hp engine. But the lift was difficult and not as successful as I would have liked so I have indeed made a "lifter" based on a couple of linear ball bushings and some precision shafting That I happened to have lying around. It works extremely well and very quick to use. However it does have to be positioned around the mould and this makes it a little awkward so its use is probably best restricted to those jobs really needing it. I have more of these pistons to make and will do a video in which the lifter will feature as will some interesting gating. I always find pattern withdrawal a nerve wracking business (born worrier I guess!) one slip and all the effort of making a nice mould is destroyed. I have seen old-timers so gifted at this that they put me to absolute shame!... Martin

Love it Martin. Keep the videos coming mate. Oh, what was the powder for that you put on the molten melter coming out of the riser? Was that some sort of flux? Cheers, Aaron

@olfoundryman8418

6 жыл бұрын

Aaron, Ah, we all loved it, you, me ,and the most important bloke - the one who has the jag! The reddish powder put on top of the feeders is an exothermic compound (Basically sort of like thermite) it burns and helps to keep the metal in the feeders liquid so they can better provide liquid feed metal to the solidifying and thus shrinking casting underneath... Martin

@DCT_Aaron_Engineering

6 жыл бұрын

Ah ha, now that makes sense. I truly mean every word I say mate. God help us when blokes like you are no longer around Martin. All this vast knowledge will be lost. What has happened to Australia? Unfortunately I believe they are drunk on the dream caffe latte's, smashed avacado and rental properties portfolio. Australia truly is the rise of the dumb. Cheers mate, Aaron.

@olfoundryman8418

6 жыл бұрын

Aaron, Sadly I know of a lot of foundry expertise that has recently retired, closed down, and gone fishing etc., without passing any of their extensive knowledge on. The investment casters in Kilsyth, Dempesters in Bayswater and about 100 others! It is as a friend has oft said "a race to the bottom". My time must come soon too as age takes its toll and the physicality of foundry work makes it ever harder. Hence my efforts via YT to pass some of it on. "Pooroldchap" said it best with "when an old person dies its like a library burning down". Both he and I are just trying to save a few books... a couple of pages even!... Martin

@andycoombes

6 жыл бұрын

Keep writing - this stuff is beyond price. I'm 61 and an electrical engineer....when you come to the point in your life when you look around and realise that *you* are the greybeard who knows how it all works.....and that there's nobody following....

@AshesMardiGra

6 жыл бұрын

Well casting is not by any means as popular as video games, however here in the USA I think interest in casting and blacksmithing is making a come back. Mostly due to the fact that we are getting tired of cheap foreign imported plastic parts.

Hi Martin, greeting from Indonesia... what the white powder you spread in the sand ? calsium carbonate ? you are using Resin Coated Sand ? Nice video Martin 👍👍 Warm Regards Agus.

@olfoundryman8418

5 жыл бұрын

Agus, The white powder (the parting agent) is calcium carbonate. The cores used or this casting were resin coated sand shell cores. Over the years I have built up quite a few shell core moulds for short cylindrical cores used for throttle bodies like this one. I also use CO2 silicate cores when I do not have a suitable shell core size available - I far prefer the shell cores, as they vent better and can be made months ahead and stored on the shelf, they are also stronger and I think easier to make, regards... Martin

Hi Martin, what is the alloy that you use for throttle bodies? do you have any preferences? Thanks

@olfoundryman8418

6 жыл бұрын

German, I use what we in Australia call 601. In the US its called 356 and in the UK LM25. I buy certified ingot. This alloy is my preference for most of my work both sand cast and gravity die. Its the same alloy as used for many (probably most) alloy wheels. It casts easily and is capable of producing very sound castings. It can be heat treated either T5 as I do or T6 more commonly commercially. Once heat treated it machines very well. (With good tooling and some coolant it machines quite well without the heat treatment)

What did you sprinkle on each castings vent after you poured it? What was the point of it? never seen that done before.

@olfoundryman8418

2 жыл бұрын

Build, I put an exothermic compound on the tops of the feeders. I guess its a type of Thermite. It is called "Ferrux NF" and it is made by Foseco. Its job is to catch fire and thus generate a lot of heat that helps keep the feeder liquid for longer thus enabling it to provide better feed for the solidifying casting underneath. Very few hobbyists use it although a fair number of commercial foundries do. I find it a great help in getting shrinkage free castings.... Martin

@BuildBreakFix

2 жыл бұрын

@@olfoundryman8418 interesting. Been casting all sorts metal for years at home, never saw it even at work before. Interesting principle though.

Can I ask what the spoonful of powder was after the pour?

@olfoundryman8418

6 жыл бұрын

Courtney, The powder that I add to the top of the feeder just after pouring is an exothermic that catches fire and keeps the feeder hot for longer so it is better able to provide feed metal to the casting. It is made by "Foseco" and it is called "Ferrux NF"... Martin

Doesn't the tapping of the pattern that aggressively increase the size of the part? Or is this not important in part due to shrinkage and the already less accurate nature of a cast part compared to a machined one?As well as the fact that the casting sand has already compacted and compressed about as far s its going to go?

@olfoundryman8418

4 жыл бұрын

Tsunamijuan, Yes it does. But I am not actually moving it that much as it has a pretty good grip on the sand. At most I might get 0.25 mm per side (0.010 inch) over a 5 or 6 inch part that's is not much of a problem. The important bits of this casting are of course machined and any increase in size will thus be restricted to the non critical as cast surface of the part. The sand has indeed already been compacted but not to the point of brick like rigidity - it will still yield under casting contraction forces - if it doesn't the casting will likely crack!....Martin

@TheTsunamijuan

4 жыл бұрын

@@olfoundryman8418 Thanks for the info greatly appreciated. I think part of my quandary was due to how accurate and on a finished level your castings are. They really are a work of art.

Great video.. The only thing I will say is that I was a little disappointing that you didn't spend more time at the end showing off the finished product.

@olfoundryman8418

6 жыл бұрын

Chino, By finished product do you mean as I cast them, or as fully machined? If as cast I did show them but not with the gates feeders etc. cut off which I guess I should have and in fact could quite easily have done. If after machining I can't show that (well not yet anyway) as I don't do the machining. The person who does and who owns the E type they are to be fitted to is going to send me photos of the eventual set up on the engine. I still have to cast the 12 little elbows that attach these throttle bodies to the manifolding. These and the video of them being made should be done in a few weeks. Once I get the photos of the finished products I will do a very short video showing them, and the installation - hopefully! ..stay tunned... martin

i want to say hi from Egypt

@olfoundryman8418

6 жыл бұрын

Mohamed, Hi back to you from Australia... Martin

What is placed at the top of the feeder that burns as the metal flows up through the cast?

@skatinskelton3504

Жыл бұрын

Nvm, I see that this question was already answered. Thank you for the excellent content.

@olfoundryman8418

Жыл бұрын

Skatin, Yes, it's a very common question..... Martin

Did you make those flasks?

@olfoundryman8418

5 жыл бұрын

Douro, Yes I did make the flasks, many years ago and have been very glad of them ever since. Shortly I will have a video out about my journey through flasks discussing what I have tried and what was right and wrong with each of them. Then another video is in plan where I present a design for a versatile flask suited to the hobbyist. I will make such a flask during the video and it will be deliberately done with very limited equipment - the sort of thing that most people would have access too - so stay tuned… Martin

Just out of curiosity, if you had 12 to make why you put the pattern on a match plate? Then all the gating could have been mounted. Nothing to cut. Riser could be located on a pin a removed after the cope is ramming.

@olfoundryman8418

2 жыл бұрын

Dave, I assume you mean why did I NOT mount the pattern on a match plate. I did not make the pattern - I was presented with it as a fait accompli. All I did was to give it my usual coat of matt black paint.. Certainly had it been on a plate, gates and all, and that matched the box pins, it would have made the job both quicker and easier - I do have many jobs that are on a plate. However, I am not a pattern maker, just a humble metallurgist. My pattern making abilities and equipment are pretty meagre. It would have taken me way longer to mount on a plate add gates etc than to just cut the gates for a small number like just 12 off - sometimes it is just more productive to stick to what one is best at. Had the requirement been for 3 or 4 times more castings I would have sent the pattern back to its maker with a "please plate" request. But knowing the pattern maker concerned if the quantity had been up there he would have plated it automatically - he is good like that - 😊 we each know what the other needs. The feeder is actually located on a small pin as it is, and was indeed removed (as the video shows) after the cope is rammed but before strike off... Martin

@roscoepatternworks3471

2 жыл бұрын

@@olfoundryman8418 that's kind of why I was curious. I am an old patternmaker. The patterns I make now are small enough, only 5 lbs of aluminum and up to 16 lbs of brass for per melt. I mount pretty much all my patterns. Even for a 1 off casting, it has its advantages. Such as a perfect casting for a steam engine, only to have it screwed up in the mill. 🥺 it was my fault.

What is the powder you put on at the end of the pour?

@olfoundryman8418

Жыл бұрын

Train, It is an exothermic called "Ferrux NF" it is made by Foseco. Its job is to catch fire and thus generate a lot of heat, this keeps the feeder hotter for longer so it is better able to feed the solidifying casting underneath.... Martin

What is it that you pour on top of the feeder after the casting and in what purpouse?

@olfoundryman8418

5 жыл бұрын

Outlaw, I add an exothermic compound called "Ferrux NF" it is made by Foseco. Its job is to catch fire and generate a lot of heat, this keeps the feeder liquid for longer and thus it is better able to feed the solidifying casting underneath... Martin

@outlawbender

5 жыл бұрын

@@olfoundryman8418 thankyou for the answer. That makes sence. I am familiar to some of ther other products. Time to contact them again.

👍👍😎👍👍

V12 E types weren't fuel injected... Is he adding some system to his car? I wonder what he's using? I'd dump the 2 Strombergs off my 6cyl E in a heartbeat if I could.

@olfoundryman8418

6 жыл бұрын

World, You are right they weren't fuel injected but this one is about to be. Apparently it will all fit under the standard bonnet bulge. I hope to do an update to this video showing at least some stills of it all assembled and on the car. Someone that I just used to know once had a very early E. It had 3 humongous SUs on it, impossible to tune. Sadly the car was pulled apart, a few bits sold and the rest junked... Martin

@jagboy69

6 жыл бұрын

Olfoundryman I've been screwing with old English cars for over 20yrs. I can tune 3 su's in my sleep. Easiest carb ever built.. My Strombergs have all the early emmisions garbage. Temp compensators suck. I'd like to see the final job of the conversion if you can post it. thanks. Keep that pattern! XKS.com would be interested in these throttle bodies, so would eagle in the uk.

@olfoundryman8418

6 жыл бұрын

World, Tune 3 su's in your sleep, you must be a bloody genius mate! I could not even manage two on my 3.4 jag - maybe I was just too busy trying to keep the front end right. Unfortunately I do not own the pattern so I can't keep it. But you are not the first person to suggest interest from others and I may indeed have another set (or two perhaps) to d. I have been promised photos of th e finished job and I sure intend to post - I want to see what it all looks like too, very swish I suspect... Martin

@jagboy69

6 жыл бұрын

Wanna know the secret???? www.gunson.co.uk/product/G4074 and one of these. www.amazon.com/Uni-Syn-Carburetor-Synchronizer-Synchronizing-Balancing/dp/B073RPZKBX I wonder how much this FI conversion is costing this guy?

@olfoundryman8418

6 жыл бұрын

World, Interesting particularly the plug thingie! would be handy to have one could have used it to tune our 1.5 hp Lister D stationary engine - it runs a geny at a holiday shack in the hills. Costing him? A lot I would guess. They started by casting the large plenum chamber that the 12 throttle bodies will attach to - full set of patterns and core boxes etc. months wait for the castings (too big for me) then the heat treater warped the castings and they broke during straightening - a sad tale of woe so they are now fabricating the plenum box but by the time its added all up TBs elbows plenum fuel rail injectors sensor control electronics etc I doubt it will be a cheap exercise but some are won't to do these things and who are we to argue! Should look very smick an go like the clappers. I suspect that said Guy will be very happy with the result... Martin

whats the powder you put on the top of the riser ?

@olfoundryman8418

5 жыл бұрын

Matt, The red powder that I add to the top of the riser (feeder) immediately after pouring is an exothermic compound called "Ferrux NF" made by "Foseco". Its job is to catch fire and generate a lot of heat. This keeps the feeder liquid for longer so it is better able to provide feed to the solidifying casting underneath. I guess its sort of like a type of "thermite".... Martin

👍

@olfoundryman8418

3 жыл бұрын

Thank you.... Martin

Hi martin, how much to get these cast cheers

@olfoundryman8418

5 жыл бұрын

Jag Nutter, (I used town jags so you have my sympathies! )😀. I do not own the patterns for these throttle bodies or for the little elbow that goes with them so I can't quote you a price. I can put you in touch with the person who owns them if you give me some detailos where he can contact you. However I can tell you that it is not an exercise for the financially faint hearted... Martin

Жаль что вы не можете комментировать на русском, класс!

@olfoundryman8418

5 жыл бұрын

Denis? Yes it is a pity, but I can't speak Russian at all and there are many interesting looking Russian YT videos that I would like to watch if only they were in English (or if only I spoke Russian 😏)… Martin

Camera angle gives me vertigo.

@olfoundryman8418

5 жыл бұрын

Furness, I struggle with camera angle. I have never found one that I am truly happy with despite trying many positions. I sort of settled where it is now as at least the viewer sees much the same view as I do but I do not know what else to try - suggestions welcome... Martin