Manual inspection is almost becoming a lost art with the rise of CMM equipment available to the shop floor. The aerospace company I worked for had Maxichecks, Zeiss and a monster L&K CMM in our layout inspection area. We also had an old guy named Bud who could inspect a part with a height stand and indicator, a tilt rotary table and a calculator faster than a CMM could. We compared his readings with the CMM and he was spot on every time. The man was an artist at his craft.

@ZacharyTelesca

2 жыл бұрын

I have never had either art. One nice 6” starrett dial caliper and I can build you a jet engine 🤣

@j.j.s.jr.5136

2 жыл бұрын

Sounds like me. Lol not trying to be cocky but I am faster with everyone that uses the cmm vs me using Cadillac, a height stand and indicator.

@dominic6634

2 жыл бұрын

@@ZacharyTelesca hmm must be really nice calipers.

@ZacharyTelesca

2 жыл бұрын

@@dominic6634 make sure they are zeroed, measure 10 times, remove the outliers and average the rest 🤣

@jeremyl.7563

2 жыл бұрын

I agree. My company just invested in ViciVision M306 Techno. I'm not going to lie, though; it's pretty bad a**.

Travis is the best quality guy I have worked with, especially considering he's an incredible Machinist as well, you don't find that very often. Great video man!

Excellent video. We need more QC content on here. It is especially important for the machine operators making parts to know how a part is to be checked for various requirements. This only benefits everyone.

@travisjarrett2355

2 жыл бұрын

Ha ha. You get no argument from me. Thanks for watching.

@highpointsights

2 жыл бұрын

like your handle (Trumpwon,bigly)

The quickest way to do this is to have the surface you want to check facing the granite. Set it on 3 blocks the same size( Gauge blocks are fine). Then run an indicator on the bottom side. This eliminates the need to indicate in flat.

@JamesKC3OXN

2 жыл бұрын

This is probably the quickest and most accurate way for larger faces, like the one he just showed. His technique has much more uncertainty. I use 3ea. 1-2-3 blocks that are lapped and matched with an indicator on a base that slides under the part, no adjustments needed.

@360mac360

2 жыл бұрын

While I often did that in gauging gauge plates I made, this way does allow access to the entire surface. Indicating the bottom does not. I would normally check three points on the bottom so I could measure the parallelism of the part, but as this was already known and he just wanted to check flatness, this was best as it gave easy access to the whole surface.

@dj2740

2 жыл бұрын

feeler gauges and granitew block done and it will give true flatness not perpendicularity like indicator will.

@billymann5325

2 жыл бұрын

Exactly!...I def have no use (future reference) for this video!

@jonathanbatson6541

2 жыл бұрын

@@dj2740The risk with doing that is that if they're part is a cup shape where you would miss a low spot in the center because the edges are touching the granite not allowing the feeler gauge to see the high spot A common alternative is a flat plate with a plunger indicator poking up the center and you can move the part over it. Indirectly measure the deviation from the surface of the flat plate to the lowest part of the feature which will give you the flatness. I'm going to call the flatness indicator

One is a point…two is a line.. three are a plane. Simple and effective…. Most machinist will have this inbred but for the rest of us who watch to be educated and amazed its always good to have things to latch onto for our hobbies and work. You must be a super high performing genius not to learn something from these videos….. consistent learning..magic.

@highpointsights

2 жыл бұрын

Yeah I get that their flatness wasn't at all a tight call out but I'm surprised that you guys tried that?

As an inspector in aerospace, I would agree with everything said in this video. That's how you do it :)

I am sill learning, but a few questions come to mind: 1. Aren't you measuring parallelism when you set your reference on the bottom and then measure off the top? Taller stands would let you sweep the underside where your plane is established. 2. Adjustable jack stands seem unreliable for precision work with call outs in the .005 range, just setting the part on them could cause more movement then that on the threads, adjustments aside wouldn't fixed stands that have been run through the surface grinder together be more accurate as a base? You guys are awesome and I like how everything is broken into manageable sections for the widest audience, this is a trade that will always have a place in the world and it's great to see enthusiastic teachers of useful skills.

@travisjarrett2355

2 жыл бұрын

I do not use the bottom for the reference plane but rather use the adjustable jack stands to create the reference plane on the top surface. Takes a little longer but give better access in my opinion.

@blacklabel6223

2 жыл бұрын

You are creating a parallel measurement, but you’re doing is by referencing your plane to a known flat plane. So you assume the table is “dead flat” and then the peaks and valleys of the top surface can be referenced to a perfect plane. So yes, but only as a byproduct. The real goal is referencing the measured plane to a “perfect” one. Weirdly enough the jack stands work okay. For super precise stuff they do make high precision jack stands and such. Great questions man

@trentwood1449

Жыл бұрын

I agree with the previous two replies. If you plan to use the jacks in the fashion when you are sweeping your indicator on the face of the part that the jacks are resting on you must use a point style tip (on the jack). Using the ball mount socket creates a pivot point mini datum pad. This style of feature could cause unintentional interactions with the part if cupped and would not act as reference points. The whole idea is three points make a plane.

Reminds me of when I worked. I was In aerospace/medical. I spent 35 + yrs as machinist, T&D maker and in metrology.

Please do more of these. Excellent demonstration.

Man why can't I like this video twice, an amazingly valuable information please Travis everyone does machining videos on youtube but no one does inspection, please more inspection videos especially old school inspection methods.

This is a good content, back to basic to things that most people forgot or simply cheaper methods that can be done immediately, especially for a machinist....

Thanks man, you're a good teacher with clear explanation Travis.

@travisjarrett2355

2 жыл бұрын

My pleasure. Thanks for watching.

Thanks as a mechanic support machinist we don't always get the best of inspection equipment (cmms) this can help alot of people Keep up the tips!

Appreciate the QC & Inspection videos. Please do more of these. Thanks a lot!

More videos like that!!! Pure educational gold!!! :D

Keep on giving!!! Watching before work starts

The way you are doing this we’re you are looking for parallel and surface planter accuracy.. you are relying on your step ups as perfectly level after adjustments you have done. What you should do is either set your surface parallel with a know parallel surface gauge, or do as you have done but take your measurements three times by moving the part in rotation 120 degrees and recheck your intended surface. This is the only two ways you can accurately measure parallel surface for planier accuracy. One you have determined planier accuracy is parallel, then you can check your intended surface accuracy, however.. this is also determined by the bottom surface be planier accurate as well. By rotation 120 degrees you can immediately determine your bottom surface accuracy. Mil Spec T5400 quality assurance standard.

Great explanation espacially when adding the comparison of CMM

Excellent content! Everything that I have is manual....but these principles still apply. Great explanation. Thanks!

He does such an excellent job in explaining the Procedure !!

Thanks! It amazed me to watch u fellas doing a tool.setup a while back. Yall started with joblocks and the surface plate as your root reference. Johanson was smiling down from heaven ;)

That is badass. Love the way you clearly explain things. Very easy to follow your teachings. Much love and gratitude

@travisjarrett2355

2 жыл бұрын

Thank you my friend.

Be careful using sharpies on Stainless steels, they can lead to long term corrosion. Lots of applications forbid anything other than low chloride/low halogen marking implements on a finished surface.

@travisjarrett2355

2 жыл бұрын

That is true Andrew. Thank you for adding that.

@kw2519

2 жыл бұрын

Ya, that made me anxious 😂

@AnunnakiAaron

Жыл бұрын

hmmm didn't know that. Thanks.

@dominic6634

Жыл бұрын

You not wrong but its situational

@dominic6634

Жыл бұрын

You not wrong but its situational

I like this method. I usually set up the surface to be inspected upside down on three points and sweep under with a long stem indicator.

@ILmachiner

2 жыл бұрын

Don't change you are checking flatness correctly. This video is checking parallel.

@travisjarrett2355

2 жыл бұрын

@@ILmachiner you can check it both ways accurately so long as you create a perfect plane to measure against on the top surface. This is why we use the adjustable jacks. In a technical sense we are checking against the uncertainty of the surface plate but that is true no matter how you do it.

@ILmachiner

2 жыл бұрын

@@travisjarrett2355 this method is a wast of time. Put the part on 3 points you know are equal hight. That is the plain. The smaller the point on the 3 points the better, or use precision balls.

@nitrocat

2 жыл бұрын

@@travisjarrett2355 I see the advantage of having the surface facing up where you have full access. It's an extra step but not much work. Setting up is half the fun.

Amazing! Thank you Travis. Will you be doing more old school gd&t measurements.

Very good work... This knowledge will help many...

This guy seems to be on the level.

Excellent video thank you!

this is exactly how I would do it, great demonstration

@travisjarrett2355

2 жыл бұрын

Thank you very much.

Really enjoying you videos.

Very good tip! This is extremely useful! Thank you! :)

Just because these boys have everything, doesn't mean they forgot everything that got them there. Always good to rely on accurate, proven conventional methods to check the accuracy of your parts. Great Video Travis!!

great video more metrology videos needed to our comunity great job

Very cool. Thank you

Very nicely done, great job explaining things. Thank you.

@travisjarrett2355

2 жыл бұрын

Thanks Jeff! I appreciate that my friend.

seen it done it, show us more complicated QC practices. This is TITAN!!

I've seen the indicator point angled almost straight down to the part. Way back learned to keep at least the point as parallel to the part as possible. Seems to be so different with newer machinist

@travisjarrett2355

2 жыл бұрын

This is indeed correct William and maybe I should have mentioned it. I did try to make the angle as small as possible and still access the whole surface of the part. Compensating for the roughly 20 degree angle (estimated) would put the actual deviation around .0031 (a difference of .0002). For this particular application I was ok with this level of uncertainty. Thanks for watching.

Thanks great explanation.

@travisjarrett2355

2 жыл бұрын

Thanks Rodney.

Thanks for sharing

I would have thought it better to check the 3 points on the bottom plane and then vs the top plane, that would establish flatness and parallelism. Because I would think they are very relative to one another, especially with that part being part of a hub of some sort. Correct me if I'm wrong. 🤷‍♂️

@blacklabel6223

2 жыл бұрын

He’s only measuring flatness, the parallelism isn’t relevant. If it was parallel he could just set it on the table as one plane and then measure the top, no need for stands. You would still have to check flatness and parallelism separately though. They may call out a 0.001” flatness with a 0.005” parallelism for example, where you could easily meet parallel but not flat. That’s where this comes in

@oldschoolmobile

2 жыл бұрын

@@blacklabel6223 yes I understand your point here, but my thinking is, if you have the part raised to level it out, you could then check both, flatness and parallelism with that same setup vs doing 2 as you mentioned. Kinda kill 2 birds, one stone type of thing. Or, while you're there, unless the part has an angled face. But I get ya. 👍

Great video!

Thanks 🙏 great video

I would love to see you do projection, symmetry, and true position without CMM.

@hrritapani

2 жыл бұрын

Symmetry can be inspected quite easily, rest of those in the otherhand will take some fiddling to do.

@highpointsights

2 жыл бұрын

I really enjoyed doing true up position!! THE OLD FASHIONED WAY. AND I ALWAYS GO WITH GAGES OVER CMM

Some old dude I use to work with would do both CMM and this way just to make sure to bad he never really like sharing the knowledge. Unlike myself I enjoy teaching those who are interested.

Love the video 💕

Excellent video! Simple, clear, concise. Well done. Could have mentioned temperature stabilization for such a heavy part. That could take a full day if you want to get down to tenths. Also you could mention on thinner/lighter parts the need to wear gloves to keep body heat out of the part.

@travisjarrett2355

2 жыл бұрын

All good points my friend. There are so many subtle changes that can take place when dealing with thousands (or ten thousandths) of an inch. Thanks for watching.

@WarpFactor999

2 жыл бұрын

@@travisjarrett2355 Exactly so. Just been bitten by heat from handling making scrap parts a few too many times. 😀😀😀

Am nearing retirement.. the reason I mention is! I have been watching these videos for some weeks now.. I've had a good working career, but it's never felt like I really was in the right profession. Anyway I think I should have become a machining engineer 🤔 I have really enjoyed the provisional side of this videos..

Would have been interesting to know what flatness the cmm gave yall but anyway nice and easy way to check parts!

@travisjarrett2355

2 жыл бұрын

I took 3 circles with the CMM. Inner, middle, and outer on the face. CMM came back at .0031 Thanks for watching.

If the face your inspecting has more of a cupped or dish shape, would you then have too indicate from the tallest points of the piece? And would you also have to indicate the "roundness" of that sort of shape?

Love it!

Awesome man

We have some Renishaw Equator CMMs at work. They take longer to inspect the part machined then it does to actually machine it. Pretty crap when the cnc machine producing them needs to run constantly to hold size..

Very cool.

The other way to measure flatness is to have 3 gauge blocks. Flip the part over with the surface needing verification supported with the guage blocks. Sweep the surface with a dial test indicator. Flatness is the difference between min and max indicator reading. This works fairly well.

excellent

Great video, but you could of just used three 1-2-3 blocks (or 3 gage blocks) to do a rough check like that. Just a suggestion.

Thanks Travis for another great video. One thing I don't understand is the reason for the three jacks. Is it because we cannot assume the bottom surface of the part to be flat? Ciao, Marco.

@wickem8276

2 жыл бұрын

yes that is part of it, the bottom isn't a perfect surface and has it's own tolerences that could add or cancel with the top surface (kinda like a trapazoid vs parallelogram). Using the jacks isolates the top surface.

@travisjarrett2355

2 жыл бұрын

Thanks Marco. As wictor kempel mentioned that is partly correct. We need to isolate the surface we are checking from any imperfections on the bottom surface (not flat) or maybe more importantly any relations between the two surfaces (not parallel). The jack stands allow us to isolate the surface from these possible imperfections that would distort the readings. Thanks for watching Marco.

@EZ_shop

2 жыл бұрын

@@travisjarrett2355 Thanks for the explanation Travis (and Wictor). You do a great job on your videos, I enjoy watching them a lot.

Measure flatness with an optical flat or auto collimator. I made several up to 12"(305mm) diameter in that size flatness, was 1/20 of wave length, monochrome green.

"Isolating a plane" is the name of the technique.

Flawless demonstration on how accurate Old Skool in your Kit Bag of TRUTHS Travis. Your average goes without saying Ya Turning Skills kick the Foot Pedal of Knowledge, Titan keep on B💥💥MING on

@travisjarrett2355

2 жыл бұрын

Ha ha! Thanks Nathan.

"One is a point, two are a line, three are a plane." These are my thoughts about everything. It's been years that I want to write things down. 😅 Things only become real with a 3-point framework. And it's just everywhere.

I’m sorry @ Travis Jarrett, but you are incorrect or ignore a lot of things in this video. I noticed you already replied to someone else’s comment that you are ignoring cosine error of the indicator, an important thing to state, although in this video your indicator was at a shallow angle so not a big deal in this video. However the biggest issue is that the method of checking flatness is incorrect. Using the ‘put the part on 3 jacks method’ , just zeroing out 3 points on the top surface and then sweeping the indicator over the surface and looking for the total variation doesn’t check the actual flatness. What you need to do is move the indicator back and forth all across the surface, constantly adjusting the jacks up and down to bring the indicator variation to a minimum. This can be a very difficult and time intensive process, which is why using a CMM is usually the best method. And why using a scanning CMM that can measure 100s or even 1000s of points would be best, rather than using a touch trigger CMM that only takes individual point hits. Your method will most likely give you a good idea of what the general flatness of the surface is, but at a fundamental level it is not technically correct. FARO has an okay article on their website that talks about this issue somewhat: www.faro.com/en/Resource-Library/Article/how-to-evaluate-flatness-in-gd-t under the section ‘using a height gage to evaluate flatness.

Do you have any GD&T explanation video?

JUST A FRINDLEY BIT OF ADVICE . NEVER PUT SOME THING DOWN ONTO THE GRANITE . THE BEST WAY IS TO SLIDE IT ON AND SLIDE IT OF . NICE WORK . ⚘⚘⚘⚘

Jacks are not needed really. This inspection method is 100% appropriate if the goal is to quantify flatness. Assuming the reference surface is not in a "rocking condition", if the measured surface is parallel to the reference surface (the one with jacks) then one can determine that it is also within the flatness spec BUT if the measured surface it is not parallel within the flatness specification it MAY still meet the flatness spec. There's an overlap here. Parallelism also controls flatness but flatness does not control parallelism. The parallelism and flatness tolerance zones are the same. The main difference is that orientation (parallelism) error may add to the "flatness measurement". Sometimes speed is needed, sometimes accuracy. It all comes down to what you're trying to achieve. Nice video.

Looks like it would indeed show you flatness but would not tell you perpendicularness from that face and the face against the jacks correct ? Kyle F. Lead Machinist from Tulsa ok thanks

Great.

I love metrology 💖

Dear sir, what should be tripod position angle ??

Cool! Now we wait for next level, how to chech parallelism :) I have never seen how it's done.

@oulinsaeteurn9078

Жыл бұрын

99% of the time. Use a mic

We have a leveling plates various sizes alot safer than using jacks. They are about 1/4 inch steel plates drilled and threaded holes with bolts with rounded ends that sit on the table. I think they date from the 1960's

Yup that's how we did it before CMM became more common. About the only thing I would ad in the video is cleaning the table and working surfaces before you start. I know you checked it but for any newbys it would be good to show it.

@travisjarrett2355

2 жыл бұрын

Indeed my friend. Thanks for watching.

Super cool technique! Thanks for sharing! I have a question though. Why does the bottom not get measured? Because couldn't there be high and low spots on there too? That the jacks might not be on.

@skid00etec

2 жыл бұрын

Flatness is only a surface relative to itself. The surface on the bottom in this case is irrelevant.

@jamescerven4400

2 жыл бұрын

@@skid00etec oh really? I thought it was one face compared to the other face. Or is that parallelism?

@skid00etec

2 жыл бұрын

@@jamescerven4400 yes, that's parallelism.

@jamescerven4400

2 жыл бұрын

@@skid00etec thanks! And will each side of the part have a flatness tolerance or only one side?

@travisjarrett2355

2 жыл бұрын

Hey James, looks like Michael got you right. Thanks Michael. As to flatness on both surfaces it just depends. More often than not I see flatness on one side and parallelism on the other (called out in relation to the surface with the flatness), but if both surfaces were say sealing surfaces you would likely see a flatness callout on both. Thanks for watching James.

I see you used a sharpie on your part. Honorable mention if you are making parts for Boeing big no no. We had a major finding where I used to work because we’d write with sharpie marker “MRR” (Material review request) for non conformance parts, but every now and then the parts would be looked over by engineering and deemed conforming. With the sharpie though I guess it can do something to the metal later on down the line which etches it or something. So Boeing actually makes sharpie markers that are to be used with their parts to meet their spec which we found out during an audit. Just thought I’d mention maybe you guys are more familiar with it than I am. I forget the full reason or the actual spec it was under it was years ago now.

@andrewdiehl5746

2 жыл бұрын

Halogens in the sharpie can degrade the oxide layer on stainless and lead to corrosion. Lots of people make special markers.

As long as your table has zero variation, this is great! I would have my doubts about a table being perfectly flat in such a large area, but I'm sure you guys are very aware of the tables flatness and levelness. As usual, great job!

@blacklabel6223

2 жыл бұрын

It’s a surface plate, they’re ground dead flat and also have a report to say how flat it really is. Usually sub tenth accuracy

@DrDime_

2 жыл бұрын

@@blacklabel6223 👍

@chrisyates8115

2 жыл бұрын

My concern as well!!

@scottyh72

2 жыл бұрын

@@blacklabel6223 No where in this video was this mentioned. It is more important than the whole video, as if the granite is not flat, neither is the part.

@gordonburnett9672

2 жыл бұрын

You can check your granite with the indicator prior to use. If it reads zero everywhere you are probably OK, just need to have base in multiple directions for a grid, really only necessary for weekly check if you are using it often and maybe wearing it while sliding the base around, or if it's new to you. Next video on how to fix this issue on the machine please 😁, so that we can get a perfect part off.

Nice demo. It would have been good to see the cmm output to compare. I can’t help watching anything like this in imperial units without thinking how much easier this stuff is in metric though 😂

@thelonewolf8023

2 жыл бұрын

Yeah, I know the struggle 🤣

Was this in mm or inches? I'm a R&D worker and if that's inches I think that's a lot of runout to have. I'm used to work within 0.003 mm

So satisfying to watch as a machinist lol

The problem I have with this method of checking flatness is that if one of the 3 points you set the initial plane is low (if the flatness happened to be way out in that one spot), then your whole plane is now bad and you don’t know about it. When I manually check flatness, I set the part on three points on the surface I’m checking flatness on, then sweep my indicator under the part. The points that it sits on give more surface area, compared to the indicator ball which is has an infinitely small contact point given its spherical shape, for the part to locate on. In this instance it wasn’t an issue due to the part being dished and the flatness essentially got worse as you got farther from the center in every direction, but it could be an issue on other parts. All this being said depending on your tolerance this method is probably always fine. Might be worth mentioning the reason for using 3 points and not 4 too. Just thoughts. Source: my name

@AnunnakiAaron

Жыл бұрын

That's part of the reason why you're checking the rest of the surface though right, as if you choose one point, and move, and its off as soon as you move away, you immediately know that point is off. If it stays the same, as you move away, and is the same as the surrounding points, you don't have a point that's out.

Make a video on how to check parallelism with the indicator. Thanks

@lucasciarini5873

2 жыл бұрын

it's pretty much the same but for parallelism you lean the part directly on the table

@davidm.7220

2 жыл бұрын

So the only difference is the three points? I always thought you would indicate the bottom surface for flatnesses and the top for parallelism. Thanks!

I have 6 of those same jacks

All you checked was parallelism, not flatness. Need to set on 3 fixed points, run indicator on the surface you are locating on, (bottom ), & read your TIR. That's flatness. You can't use adjustable points to check flatness unless they are all level within .0001. Aerospace machinist for over 36 years.

@Frank_inSA

2 жыл бұрын

No, by leveling on three points he compares to the plate and not the bottom.

@johnhines3591

2 жыл бұрын

@@Frank_inSA That is parallelism to surface plate, not flatness of given feature. Set surface to be checked on tooling balls, sweep locating surface, TIR is flatness. Ran a lot of parts that callout was flatness .0018, parallelism was .005 and we held that for hundreds of parts over 6 months. By the way, that was on titainium.

@Frank_inSA

2 жыл бұрын

@@johnhines3591 the surface plate is the reference, you need something to measure against. If the top is parallel to the plate and has no high or low spots it's 100% flat Btw of course you do the same with the 3balls, checking parallelism against the plate, only upside down

@johnhines3591

2 жыл бұрын

@@Frank_inSA Flattness is measured to itself. Must locate on itself to check. Preferably tooling balls so you are locating on points, not another plane.

@Frank_inSA

2 жыл бұрын

@@johnhines3591 why can't you guys not take some time to think about? Of course your tooling balls make sure that the part sits 100% parallel to the plate. Or can you take different sized balls? While moving your indicator stand you measure ALWAYS against the plate, which is the reference. Have a good night

Some times old ways are still the best . Don't forget optical flatness gauges as well . Then optical comparator to ensure concentsity and parallelism between surfaces are Absolute

What’s the benefit over using the stands to the surface table ?

@Frank_inSA

2 жыл бұрын

You cannot put the part itself on the plate, the errors of the bottom would add up to the errors on the top. And you wouldn't know which side the error is

@Imba-gt7qi

2 жыл бұрын

the uderside is flat? no, it looks like mountains. so you dont know at wich 3 points this item stands. you cant level the top side, if its runnig down the hill, how you get flatness? you do this with the measuring mashine, the level divergence is calculatet and correkted.

@Frank_inSA

2 жыл бұрын

@@Imba-gt7qi it doesn't matter whether the underside is flat or not, you wanna measure the flatness of the top By leveling at 3 different points the top is exactly parallel to the plate Then you compare the top to the plate

@Imba-gt7qi

2 жыл бұрын

@@Frank_inSA yes thats why using 3 stands, without stands you cannot get a parallelism to the surface. (sorry for my bad englisch)

5 thou flatness, I wish. I could check that with a flat edge. I can see that with my eye. 😂

How do you calculate the Measurement errors? I am afraid there are many of them.

This is basically how 3d printer beds are calibrated.

Give us more manual please!

Pretty level guy !!😅😅😅

By the look of it. U guys machine the side with the hole first. Than held it , to do the taper. The part collapse n bent inward.that’s why the high spot is on the outter area.

oh, i get it, because it references against that three point plane

why put the part on jacks when the surface plate is already flat? doesn’t make sense to me since the height gauge is on the surface plate anyway

@GrandePunto8V

6 ай бұрын

Get an IQ test and then comment. Read other comments ("isolating a plane" method explained).

@gerryc2851

6 ай бұрын

@@GrandePunto8V stand by my comment

For all of us regulars to the channel we need to do better for The TITANS of CNC Machining. They put out great content and educational videos daily for new and seasoned machinist. Please take a moment and support them by hitting the LIKE button. When I see over 12000 views and just over 550 likes I feel like we can do better. Thanks, Just a fan of the channel.

I wonder if you'd get less than .0033 flatness reading if you zero the high and low points...

We are constantly fighting flatness on our aluminum (or any material) plate parts

@Ravero123

2 жыл бұрын

Yeah material warping can be a bitch if you are removing a lot of stock

@yogi-smart4829

2 жыл бұрын

@@Ravero123 doesn't even have to be a lot. Really wish I could find a resource to learn and understand what's going on

@Ravero123

2 жыл бұрын

@@yogi-smart4829 i am blind guessing right now but warping may come from internal stress from forging or heat treatment. Maybe using annealed material could help, or trying to remove even stock from both faces of plate. There really is a lot of factors there...

@yogi-smart4829

2 жыл бұрын

@@Ravero123 yeah forging processes barstock versus plate which way the grain runs lots and lots of variables.

How do I contact Titan, I have a idea that can revolutionize the auto industry.

Thanks for raising a low spot in my metrology knowledge.

I guess you saw my flatness comment the other day.

Machinist stone and granite table have one thing in common - I have only seen these on KZread. XD

Why wouldn't you set the the part on 3 1x2x3 blocks resting on the surface to be measured and come underneath the part and indicate?

@travisjarrett2355

2 жыл бұрын

Ease of access is mainly why I choose the top surface method and the 123 blocks may hide the "highest" or "lowest" spot thereby hiding the real value. Thanks for watching Michael.