Thanks for taking the time to make the video. And, more importantly, thanks for explaining your thought process on why you did what you did vs what others have done.

@KevinToppenberg

Жыл бұрын

You are most welcome. I REALLY wish that scrapers could be mass produced, so the price would come down. There is no reason that one should be more expensive than a sawzall at Lowe's. But hopefully someone can take what I have shown and make their own. Best wishes!

Very impressed with your ability to understand mechanics and machining, especially being new to it. Thank you for showing your spin on a cheaper alternative to the Biax.

@KevinToppenberg

3 жыл бұрын

Thanks! :-)

Glad to have stumbled across your channel

@KevinToppenberg

2 жыл бұрын

Welcome aboard!

Thanks for the video! I am building an Epoxy Granite CNC mill, and there is going to be a lot of scraping for all of the linear slide surfaces. Fortunately, I googled "power scraper" last night and your video came up in my feed today. I discovered the Biax and Makida scrappers but both are either more than I can afford or am willing to spend, so I started pondering along the same lines. A modified reciprocating saw. In the end I suspect I'll just do it by hand, since I haven't done it before. Giving a power scrapper to an amateur might be like giving a monkey a machine gun.

@KevinToppenberg

10 ай бұрын

I think starting with hand scraping would be a good beginning. Get the feel for it, and see if you really need a machine. On the other hand, it was a fun project to make!

@jameshicks7125

10 ай бұрын

@@KevinToppenberg I agree. Once the CNC is done I probably won't need to scrape anything again. I primarily want the CNC for telescope making and some other projects.

@KevinToppenberg

10 ай бұрын

@@jameshicks7125 That sounds like a fun project. Best wishes!

really well done there, hope to see some scraping in the future

@KevinToppenberg

2 жыл бұрын

If you follow through my restoration videos on the South Bend lathe, there is more scraping than any sane person would want to live through. LOL!

Well Done Kevin, thanks for sharing. So, now all I need to do is finish painting my basement shop area, prepare and finish the floor w/ polyasorbic (think epoxy, but better) floor finish, clean up my newly purchased 50 yr old BP mill, disassemble it to move to basement ( down a grass covered incline), rebuild head, motor, and table/saddle/knee parts as needed, scrape all the ways, reassemble....then I can replicate your wonderful idea to make a power scraper to make step 47, 1000 times easier. I may have lost my mind!

@KevinToppenberg

3 жыл бұрын

I guess it is all about enjoying the journey, eh? It is funny that you mention transporting your mill down a grassy incline. I am in the process of moving my shop out of my garage to an outbuilding which is down a grassy incline. I'm afraid I'm going to have to rent an expensive forklift with large tires. Best wishes!

Great use of modelling & 3D printing to optimise the parts pre machining. Good explanation of your design choices and how you overcame the pitfalls. Your machining skills will improve you have a BP style mill and there is hours of content on the ‘tube to absorb. I too would like to make a power scraper and have watched all of the males as you have but you have added to the knowledge base by showing the Biax approach. Please do share more as you develop your solution. Yes it took you a month but you have already saved me development time. One solution suggested is to build two units with fixed strokes one short and one long to save the hassle of building the adjustment into one unit. Thanks for sharing.

@KevinToppenberg

3 жыл бұрын

Thanks for the kind words. They are appreciated!

Nice job. I made a hand scraper, works but slow. Will keep this for when I get serious about it. Thanks

@KevinToppenberg

3 жыл бұрын

It was a pretty fun project overall. I think more people should attempt this. Best wishes.

Great project! ! Must probably try the concept myself.... :-)

@KevinToppenberg

2 жыл бұрын

Best of luck! Just make sure you get the right kind of reciprocal saw, with a scotch yoke.

Nice work, but next time, filming in landscape mode would be sooo much better

@KevinToppenberg

3 жыл бұрын

You are 100% correct. I realized my mistake after I sat down to assemble the clips into a presentation. I probably should go back and re-film the entire thing... Rookie mistake!!

@reiniertl

3 жыл бұрын

@@KevinToppenberg Yes please, it very awkward to look at and you leave a lot of useful stuff out of view.

Great thumbnail for the video! Nice use of pop culture references with merely an image! Commendable... P.s. phew, regarding the filming of my restorations, i just might do some, as i just moved my Emco FB2 on her bloody table(dont try to muscle around 110kg of cast iron), and now the shop is actually starting to look more like a shop and less of a mess... I guess I`ll use one of the screw anchors in the ceiling for garage door and install a custom swivel arm. With it hanging there i`ll be able to film the whole room from a good position and capture all the work more or less from good angles...

@KevinToppenberg

Жыл бұрын

Thanks! Does it remind you of a particular pop culture reference? I was trying to be dramatic, but wasn't copying anything specific, as I recall.

I have used that masonry drill bit hack myself - I made a set of them and they have got me out of trouble many times

@KevinToppenberg

5 ай бұрын

Someday I hope to purchase a proper set of carbide drills. But you do what you have to do! Thanks for watching

@bigoldgrizzly

5 ай бұрын

@@KevinToppenberg You never know what the day will bring. I recently went to car boot sale and got lucky finding a tin of about 50 carbide drills.These are mostly metric and under 7mm with a lot of duplicates, and a few small carbide bottom mills and countersinks as a bonus ....they are all in great condition, some never used. I knew straight away by the weight of the tin that I was on a winner and snatched their hand off when he only asked £4 for them ...... even in my state of shock, I did have the decency not to try and beat the price down. :

@KevinToppenberg

5 ай бұрын

@@bigoldgrizzly I love stories of a great find at such sales! Best wishes.

@bigoldgrizzly

5 ай бұрын

@@KevinToppenberg Indeed so - a bit like fishing, every time you cast, you never know what might end up on your hook ;

hello again, you bought a biax from my fathers estate a little bit ago. I found a home made version if you are interested.

@KevinToppenberg

Жыл бұрын

I am interested, tell me more.

Nice work, yep it will be fine for your scrapping mate, just angle the underside of your carbide holder to allow a lower attack angle experiment with a little more flexible material for your main arm if you have time. Take your time get used to it and your golden. Once again nice job

@KevinToppenberg

2 жыл бұрын

Thanks. There does seem to be a bit of physical skill needed. I appreciate your feedback. :-)

I highly recommend that you replace those three hardware quality Phillips head screws with grade 5 hex head or Torx screws. At some point, those screws will shear off. McMastercarr. That’s where you go for parts and materials. Just get used to buying boxes of things like screws, washers, nuts, etc. You’ll always use them later. The arm is too long. About half the length is needed, maybe a little bit more. Also it’s way too thick. It needs to have some flex.

@KevinToppenberg

3 жыл бұрын

Thanks for your input. I know that a hand scraper has flex, but do the machine scrapers also flex? From the pictures I have seen of them, they look rigid. Good idea, too, about the screws. Thanks again.

@melgross

3 жыл бұрын

@@KevinToppenberg yes. Without that, it’s hard to control, and quickly becomes very tiring. You’ll also have to make a different handle. That handle. Particularly being vertical, on the top, isn’t going to give you much control, and, after all, we’re just taking a couple of tenths off each time, at the most. I can’t really figure why you’d want one of these anyway. They’re really only useful when you do a lot of scraping, often.

@KevinToppenberg

3 жыл бұрын

@@melgross Well, as I said in the video, this is a learning process for me. I'm going to have to figure out what is best as I stumble along in the dark. Thanks for trying to send some light my way!

For anyone who wants to make one of these, I caution you to stay away from all of the 2021 production Harbor Freight sawzall's. The design of the ring gear leaves little material for adding a sliding mechanism to adjust the stroke. This includes the Chicago Electric, Bauer, and Hercules models.

@KevinToppenberg

3 жыл бұрын

Good to know. Thanks!

@KevinToppenberg

3 жыл бұрын

I got my starting unit from a pawn shop for a good price. Also, as I tried to point out in the video, not all sawzall's even have a ring gear, and they wouldn't work at all. So try to find a schematic of the model before buying it.

@brandontscheschlog

3 жыл бұрын

@@KevinToppenberg That’s exactly what I’ve been doing. I looked up yours and then went to eBay to look for one

@tonyray91

3 жыл бұрын

I’m using a Makita JT3050, easy to find, very well made, spares widely available and made to be disassembled for repair. The large gear is available so If my modification goes wrong I can try again. The handle end is removable so I plan to 3D print a replacement adding a variable speed switch with a dial as used on some drills. I am aiming to sue the saw upside down that way it will more closely look like a Biax. I’ll experiment with a 3D printed piece where my right hand will sit at the front of the saw being right handed.. Biax give the length of their units and I think I will need to shorten the front end. My adjustable stroke mechanism will be very close to your design. thanks for the inspiration. It would be good to see an update detailing what I working well and what if anything you have/ would like to change.

@KevinToppenberg

3 жыл бұрын

@@tonyray91 Best of luck with your project! Regarding an update... as I mentioned in the video, this is all new to me. When I used my power scraper, it just didn't seem to dig in and scrape very well. It seemed that the motor was going too fast, despite me dialing my speed to the slowest possible. The scraping project I was working on (a 9" straight edge) was not very large, so I actually ended up doing much of the finishing work with a hand scraper. I used the power scraper to cover all the surface, but after inking I used the hand scraper to adjust small areas of contact. I think if I had a large project, with a lot of metal to remove, then the power scraper would be more useful.

That last black ring you 3D printed so the cap would fit properly; how did you get the dimensions for that cap? Noticed you have not only the diameter correct, but the whole cap seems to perfectly fit the cast metal casing of the scraper.

@KevinToppenberg

Жыл бұрын

It's been awhile since I did this, so I don't recall directly. But my usual process is to sit down with caliper and measure all the parts, and then put those values into my modeling software (I use OpenSCAD).

@fearlyenrage

4 күн бұрын

Info there are calipers with some plugs at the messuring points the V shaped plugs go into the drilled holes and msssure their space between centers. They are expensive 70.- but well woth the money. You could also plug in all screws and messure all diameters at the outside of the circle then calculate the messured diameter minus 1 screw diameter that will result will show you the hole centers.

Brah, the verticle camera… WHY

@KevinToppenberg

Жыл бұрын

Rookie mistake! I have since learned better. 🙂

@DavidHerscher

Жыл бұрын

@@KevinToppenberg lol

Why no just buy a biax? They’re inly $5k 😜. Nice job.

@KevinToppenberg

10 ай бұрын

What I want to know is WHY they are so bloody expensive! Seems like there would be a market for a cheaper alternative! Thanks for watching.

@sblack48

10 ай бұрын

@@KevinToppenberg i think the market is very small and they are high quality units built at low production rates in europe (Germany?). We are so used to prices of mass produced poor quality items from China that the price seems outrageous in comparison, but a lot more robustness and quality control goes into these machines. Also, there are virtually no competitors and since the market is mainly larger industrial companies they can get away with charging an arm and a leg. That’s why we see more and more conversions like yours.

@KevinToppenberg

10 ай бұрын

@@sblack48 Yes, I sadly think you are right.

@fearlyenrage

4 күн бұрын

​@@KevinToppenbergbecause they only sell a few. Scraping is a rare craft these days but neverless it is a very precise way to produce some what handmade rails. And besides the manufacturer sells to other industry producers the insentive here is to safe taxes by investing in very expensive tooling. You maybe adjustes the handle by now? Btw scraping soft steel needs a diffrent cutting edge angle then cast iron. Same for alu. Good work you did there.

@KevinToppenberg

4 күн бұрын

@@fearlyenrage Thanks for this feedback. I have lately been thinking that I don't have my cutting edge angle right. This is definitely a skill to learn! Best wishes... KT

What’s up with the weird video effect? I’m not sure what you were hoping to accomplish with 2/3 of the screen in some weird noir closeup. Just some feedback it DOES NOT add, it clearly detracts from what you’re trying to show. In fact it’s so distracting I can’t even finish your video, which is too bad because I’m extremely interested in following along for my own reference.

@KevinToppenberg

9 ай бұрын

Thanks for watching. This was one of my early videos, and I mistakenly took all the footage with the camera in vertical (portrait) mode instead of horizontal (landscape) mode. But to show on KZread, it has to be landscape. So this was my attempt to still make it work. Sorry for the distraction.

@TradeWorks_Construction

9 ай бұрын

@@KevinToppenberg i tried flipping landscape mid video but it still persisted, but I’ll try loading it this time while already in landscape first to see if it fixes. Thanks for the info, I’m looking forward to watching it to completion this time 👍.

@KevinToppenberg

9 ай бұрын

@TradeWorks_Construction Flipping orientation on your end won't help. I took the erroneous vertical video and added those side bars so that that the uploaded video was now the aspect ratio of horizontal. Yes, it's a complete mess! So sorry!.