Seen this happen before. Sometimes the Programer doesnt relize how stress in material affects the outcome of finished parts. Thars where a good machinist can reduce Problems in finished parts Thanks Peter for shareing
Always good to see some explain about internal stress releases. It's not often covered, but then many people dont use huge blocks like you do. It was issue we had to handle with large (around 3 feet across?) that had .003" per 3 in square flatness requirement.
now i enjoy more than ever this videos,i lost all my machines due to family conflicts i rather leave all to them.so now i am a virtual machinists thanks for this videos Pete.
It’s also fun when your agv system goes down on your linear pool and you have to hand load 50lb parts in those big ole old 2002ish MH-500s or 600s idr which model or exactly is. Fun times
That's a much bigger radius than I was expecting, I'm surprised it didn't warp before. The old supplier must have had their process down pat to get their plates that stress free.
It's refreshing to see someone cover the reality of stock removal In an honest way. You can blow through the stock but you cant completely avoid material stress either induced from the cutter or internal stress in the material itself. Especially on a job such as this.
The thing is. I could make videos that show 5-10 second clips of macho stock removal. But that isn't realistic in the real world of machining. I don't have any sponsors giving me machines material and tooling to afford play around with. It does make entertaining videos for the general public or maybe managers who buy those things. But for someone trying to learn machining, not to helpful.
@@EdgePrecision You do a great service to the trade by taking the time to show the intricacies of real world machining. I don't want to be shredded in the comments but I will say tooling sponsorships and loaner machines don't make informative content and cycle times only matter when your making good parts. Thank you for taking the time to make such detailed videos.
Yes always the same. Think of it this way. There is compression in the surface of the plate from the manufacturing process. When I cut into the core on the one side. There is no longer a balance in the force. The flat side pushes out but there is no resistance to that force on the side I cut the radius in. So it collapses that side and bows towards it. If that makes sense.
Interesting video, as always. Have you ever shown the mechanism that the pallet registers against when it returns to the machine? I imagine it has to be very accurate - for repeatability - or is it assumed you'll always remeasure the position of the part after a pallet movement has taken place? Thanks for taking the time to make these videos.
Its kind of hard to tell in the video. The six pads the pallet sets on have holes in them. When the pallet comes in air blows out those hole to clear and shavings before the pallet clamps down. As far as the accuracy/repeatability. It is not a problem. It is good enough so as not to necessary to indicate anything between pallet changes.
@@EdgePrecision I was curious about this too as I noted that you do not clean anything between pallet changes and I could not answer how shavings do not make their way into the clamp assembly. Maybe if you have an opportunity you could show briefly the mechanics of the interface?
There are no wipers. The six pads the pallet sets on have small holes in them. Just as the pallet clamps down air is blown out those holes. Blowing away shavings from the mating surfaces. There are also two large pins the align the pallet in the rotary direction. Shavings hardly ever git on them. But it appears that if they do they just get sheared off as the pallet clamps down. Actually if I don't go in there and start blowing shavings around or sweeping while the pallet is out. Nothing is really on the pads or pins. Occasionally I do clean around there. If so I make sure there is nothing on them. judging from the number of comments on this. I think I will show it in a future video. Thanks!
I did have some videos on making these parts. But because of the title of those videos the customers legal made me take them down (Really they are still there just marked privet now).
Excellent video as always. Just out of curiosity, when the pallet swaps out how is swarf and other debit prevented from getting onto the mating surfaces? Do you need to re-indicate parts or fixtures after reloading a pallet or is the repeatability such that you typically do not need to?
Its kind of hard to tell in the video. The six pads the pallet sets on have holes in them. When the pallet comes in air blows out those hole to clear and shavings before the pallet clamps down. As far as the accuracy/repeatability. It is not a problem. It is good enough so as not to necessary to indicate anything between pallet changes.
Hope you are well Peter? First thing I was shown @ 16..Rough it out and see where it moves then get it fat/square. people forget material moves no matter how carful you are.
You are back!😂 With the Length / Width ratio of block, how much gravity distortion in Vertical Clamp with Single Vise? Compared to a 2 Vice setup, clamping the Thicker Shoulders Center, using torque wrench? Had a similar situation many yrs ago with a large flange, moved to a Horizontal setup, gravity eliminated tool distortion / stress! I can see limits of current machine.🤔 Old Skool
👍the part doesn't curl any further after loosening the vise? I've always unclamped to let parts relax and re-clamp. But I'm not working with big stuff either 🙂. Always good to see you Pete!
Would it not be better to use a Lewis lift which is a lifting device masons have used for centuries . They come in different types but the slab lifting one with rubbers faces would be ideal. You really are an exceptional machinist.
Thanks! The problem I have with the Lewis type devices is they loose clamping security if the weight of the lift is set down on something. Now when mounting a part in the milling fixture you would usually set it down (In this case) on the bottom jaws/supports. Then push it into the fixture. But with these pinch type of devices the minute you set down the weight on the fixture they will lose grip (or at least some of their grip). This could be dangerous if you weren't paying attention. You will notice even in this video I set the part down and had to get something I forgot before snugging up the vise. In this case the Lewis devise would have lost control of the part. They also can loose grip if lifted at a angle other than straight up. They could work by having a clamp screw for security once tightened. Kind of like a custom C-clamp.
So many parts we spend a great deal of time getting flat and true. Then after its first heat cycle in actual use everything moves and it is messed up for the rest of its life. The world is much more complicated than most people realize.
Yes. Judging from the comments, I think I will do a video explaining some of this. There seems to be a lack of understanding on the stress in raw materials, due to the way they are manufactured or heat treated.
@@cricketshine1160 I watched his video on the copper play button (I assume that is the one). Interesting video. I guess that's what you are referring to?
someone at the aluminum mill figured out they don't need to do stress relieving any more, will save them 20$, which then results in 200$ extra work when someone tries to make a part out of that stock
Hey Peter, you talked about your Hitachi Seiki machines from the past. I am owning a Hitachi Seiki VK45II, and I'm really happy with my machine. So my question is, what kind of machine do you had, and what are the positiv and negative sides of the HS Horizontals? By the way, excellent work as always.
The main problem with Hitachi Seiki machines is they are no longer manufactured. When I owned my e the company sort of went out of busness. t least the USA part. Mori Seiki took over part of it. My machines were still under warranty when this happened. But Mori Seiki said they would not honor the warranty. This left me with a bad impression with both companies. I thought the horizontal mills were good machines. But now I would not personally own another one because of the lack of spare parts or support for them. And I will not even consider a Mori Seiki because of the way they handled that situation.
It may be possible. But the metal is certified. If any heat treat is done it has to be re-certified. That would require taking samples and doing psychical tests for physical properties. It is better to change the machining process to account for the stress in the material.
Normalizing is more of a ferrous metal heat treatment. But even if some stress relief could be done it would change the certification of the material. So then you would have to have extra material to run test samples to recertify the material. This could possibly be done. But it is just better to change the machining procedure to account for the distortion. I really should have been doing this all along. Up to this point I have been lucky with the material.
Peter, could you just rough the radius in the raw stock and finish from there? I assume you must have some tolerance that says otherwise. Seems like your 5 inch faces aren't parallel on the finished part. How about a Mexico update when you get a chance. Thumbs up here good sir.
That's what I'm doing here. This is the raw stock I'm roughing it. Then I will finish to size. My wife and I are going to Mexico in October to meet with out contractor on that project. After that I will make a video on what's going on there. Thanks!
Cool vid, thanks! In your experience, what do you think changed in the manufacturing process to create the out of flat effect from machining now, versus you saying it did not used to do that??
Good work as always ! I'm a bit perplexed about the use of oil drums as chip containers, almost every american shop video i see they use them, even the people with brand new million dollar machines and forklifts are rolling around 55 gallon barrels. Is this just an old habit that have stuck around ? You can buy a brand new 400+ gallon tipping container for like $1000.
In this case the way the machines are positioned we can’t get a hopper in there. Also it tends to be that way because of the scrap dealers here. They all use 55 gal drums to transport their scrap. There are so many different materials being machined so you really can’t have bigger bins outside to dump hoppers into. It’s kind of hard to explain in a comment. It’s just easier to dump the shavings into the drums right from the machine. Also there is the problem of theft. The drums are picked up every week. If you have containers outside here in Houston. People will come and steal the shavings to sell to the scrap places them self’s. Selling scrap here in Houston requires identification or they won’t buy it. Especially if it’s carbide.
@@EdgePrecision Okay that explains it, Thanks. The scrap dealer market used to be a very shady businesses over here in Sweden as well. They got rid of the worst of it now though with tougher regulations/requirements only the bigger more serious firms can stay in businesses.
It's great to see your videos amigo!! There's tons of things that can be taken from your videos over in using a manual machine. What model of Kurt vise did you use on this video?
If you go watch my video named "Stock Prep And Mazak Anvil Fixture For 14 Lb Anvil" (I think that's the video). You will see it happen. I was paying to much attention to the camera and forgot to switch the axis on my jog pendent. So I jogged the face mill in Z, into the vise instead of in the X,Y plane. Jus a stupid mistake. It happens.
I didn't catch what material that is. I'm guessing 6061 T651? from the way it distorted. That is what I call potato chip distortion. Long ways the surface is in tension and width ways it is in compression as a result of the stretching process. The stress is not just in the skin, the stress goes all the way to approximately the center at the neutral axis so lopping off 1/2 inch each side doesn't really change much. Unfortunately when the material has that stress pattern, whatever you do to reduce distortion in 1 direction makes it worse in the other direction. To reduce long ways distortion try machining all 1 inch off the side opposite the U. To reduce the distortion width ways, try taking off all 1" off the U side. Hope I got that right. Neither will be perfect. The only way I know to really get it straight is to sneak up on it by repeatedly machining it over and over again until you reach final size. It's a problem that has caused us lots of misery and expense. The stronger the material , the worse the problem becomes because the yield strength gets higher so it can retain more stress. Just try to keep in mind where your main features are in relation to the neutral axis and try to balance material removal equally around it. Good Luck.
Thanks Peter! Man, all that metal moves like it's made of rubber! Most people tend to think of metal being solid and immovable - obviously it moves a lot! Is it possible to remove stresses prior to machining? Maybe by way of heat soaking? Thanks! You're a good teacher! :)
It depends on the material. Some can be heat treated to be a harder structure and resist the internal stresses. Other materials need to go through a process called annealing which does what you described. It's heated up, and then allowed to cool quickly which gives up some strength, but allows easier manufacuring because it is a more stable alloy.
@@EdgePrecision Actually there is a technique called "uphill quenching" that does not change the strength of the material but apparently does remove some of the residual stress. Might be available from your supplier, I have not used it. I don't know if it would work on 6 inch material.
I checked it. If I lay the straight edge and put a .015" shim under each end. Its about that much or .015" out of flat. It just looks like more when you rock the straight edge over it,
Sorry. This is something I cant talk about. This customer doesn't like it. In fact they made me take down some videos just because I eluded to the parts name in the title.
Yes it's the stress in the surface of the plate. Everything thing is in a balance the compressive forces at the surface of the plate are equalized to each other before I cut into it. The cutting of the radius slot reduces the force on that face so the whole plate bows into it.
Thank you for all the time you put into teaching us you're skills.
hey you're back!
Seen this happen before. Sometimes the Programer doesnt relize how stress in material affects the outcome of finished parts.
Thars where a good machinist can reduce
Problems in finished parts
Thanks Peter for shareing
The airblade on your camera does a very good job with coolant and chips.
My honest opinion.. Peter you put out THE BEST content on UA-cam!!
Always good to see some explain about internal stress releases. It's not often covered, but then many people dont use huge blocks like you do. It was issue we had to handle with large (around 3 feet across?) that had .003" per 3 in square flatness requirement.
Yes the larger the part/stock the more this comes into play.
@@EdgePrecision and the more the customer will open up the tolerance! Usually!
now i enjoy more than ever this videos,i lost all my machines due to family conflicts i rather leave all to them.so now i am a virtual machinists thanks for this videos Pete.
Great fun as always Peter. I'm glad your chip conveyor got sorted too, shoveling works but all the better if you don't have to do it!
It’s also fun when your agv system goes down on your linear pool and you have to hand load 50lb parts in those big ole old 2002ish MH-500s or 600s idr which model or exactly is. Fun times
That's a much bigger radius than I was expecting, I'm surprised it didn't warp before. The old supplier must have had their process down pat to get their plates that stress free.
This is actually the smallest of the radiuses. As for the material I can't explain the difference?
Try a large bull nose end mill
Thank you Peter, always look forward to watching your videos.
It's refreshing to see someone cover the reality of stock removal In an honest way. You can blow through the stock but you cant completely avoid material stress either induced from the cutter or internal stress in the material itself. Especially on a job such as this.
The thing is. I could make videos that show 5-10 second clips of macho stock removal. But that isn't realistic in the real world of machining. I don't have any sponsors giving me machines material and tooling to afford play around with. It does make entertaining videos for the general public or maybe managers who buy those things. But for someone trying to learn machining, not to helpful.
@@EdgePrecision You do a great service to the trade by taking the time to show the intricacies of real world machining. I don't want to be shredded in the comments but I will say tooling sponsorships and loaner machines don't make informative content and cycle times only matter when your making good parts. Thank you for taking the time to make such detailed videos.
Much gratitude. Always learn something from your videos. Paying it forward is the name of the game.
Another great video Peter!
Fantastic video Peter...best wishes from Florida, Paul
The plate warped in the exact opposition direction than I would have thought, Fascinating!! Do they always warp in the same direction?
Yes always the same. Think of it this way. There is compression in the surface of the plate from the manufacturing process. When I cut into the core on the one side. There is no longer a balance in the force. The flat side pushes out but there is no resistance to that force on the side I cut the radius in. So it collapses that side and bows towards it. If that makes sense.
Thanks for this video. I missed you.
I miss Robin too.
Interesting video, as always. Have you ever shown the mechanism that the pallet registers against when it returns to the machine? I imagine it has to be very accurate - for repeatability - or is it assumed you'll always remeasure the position of the part after a pallet movement has taken place? Thanks for taking the time to make these videos.
Its kind of hard to tell in the video. The six pads the pallet sets on have holes in them. When the pallet comes in air blows out those hole to clear and shavings before the pallet clamps down. As far as the accuracy/repeatability. It is not a problem. It is good enough so as not to necessary to indicate anything between pallet changes.
@@EdgePrecision I was curious about this too as I noted that you do not clean anything between pallet changes and I could not answer how shavings do not make their way into the clamp assembly. Maybe if you have an opportunity you could show briefly the mechanics of the interface?
we can see that warpage real well...amazing the strength metal has to reshape itself
I'm always amazed that no chips get in underneath the pallet shuttle.
Are there some wipers or other means for keeping it clean under there?
There are no wipers. The six pads the pallet sets on have small holes in them. Just as the pallet clamps down air is blown out those holes. Blowing away shavings from the mating surfaces. There are also two large pins the align the pallet in the rotary direction. Shavings hardly ever git on them. But it appears that if they do they just get sheared off as the pallet clamps down. Actually if I don't go in there and start blowing shavings around or sweeping while the pallet is out. Nothing is really on the pads or pins. Occasionally I do clean around there. If so I make sure there is nothing on them. judging from the number of comments on this. I think I will show it in a future video. Thanks!
Great job sir
Thanks for the video.
I distinctly remember watching the old job on this a few years ago ^^
I did have some videos on making these parts. But because of the title of those videos the customers legal made me take them down (Really they are still there just marked privet now).
Excellent video as always. Just out of curiosity, when the pallet swaps out how is swarf and other debit prevented from getting onto the mating surfaces? Do you need to re-indicate parts or fixtures after reloading a pallet or is the repeatability such that you typically do not need to?
Its kind of hard to tell in the video. The six pads the pallet sets on have holes in them. When the pallet comes in air blows out those hole to clear and shavings before the pallet clamps down. As far as the accuracy/repeatability. It is not a problem. It is good enough so as not to necessary to indicate anything between pallet changes.
love your Mr. frowny face on your vise !!!!😂
Have you had any major maintenance issues with your B axis? Looking to buy my second used hmc and trying to decide on indexing vs full 4th.
Full 4th.
If you don't
You will regret it.
So many more capabilities
No problems at all. This machine was built in 1999. But it also has digital scale feed back.
Thank you Peter.
Thank you Peter!
Thanks for sharing Peter, been waiting for a new video!
Thanks glad to see all is well
Glad to see you are posting thanks !
very good video pèter..thanks for your time
Hy good to see you man
Thanks for posting!
Hope you are well Peter? First thing I was shown @ 16..Rough it out and see where it moves then get it fat/square. people forget material moves no matter how carful you are.
Interesting video mate thanks for sharing 👍
You are back!😂
With the Length / Width ratio of block, how much gravity distortion in Vertical Clamp with Single Vise? Compared to a 2 Vice setup, clamping the Thicker Shoulders Center, using torque wrench?
Had a similar situation many yrs ago with a large flange, moved to a Horizontal setup, gravity eliminated tool distortion / stress!
I can see limits of current machine.🤔
Old Skool
👍the part doesn't curl any further after loosening the vise? I've always unclamped to let parts relax and re-clamp. But I'm not working with big stuff either 🙂. Always good to see you Pete!
Would it not be better to use a Lewis lift which is a lifting device masons have used for centuries . They come in different types but the slab lifting one with rubbers faces would be ideal. You really are an exceptional machinist.
Thanks! The problem I have with the Lewis type devices is they loose clamping security if the weight of the lift is set down on something. Now when mounting a part in the milling fixture you would usually set it down (In this case) on the bottom jaws/supports. Then push it into the fixture. But with these pinch type of devices the minute you set down the weight on the fixture they will lose grip (or at least some of their grip). This could be dangerous if you weren't paying attention. You will notice even in this video I set the part down and had to get something I forgot before snugging up the vise. In this case the Lewis devise would have lost control of the part. They also can loose grip if lifted at a angle other than straight up. They could work by having a clamp screw for security once tightened. Kind of like a custom C-clamp.
I did not read all comments, was wondering what Alloy this is? 6061 T6 or something harder
That moved heaps! Glad you are back at the YouTubing :)
very nice,
So many parts we spend a great deal of time getting flat and true. Then after its first heat cycle in actual use everything moves and it is messed up for the rest of its life. The world is much more complicated than most people realize.
Yes. Judging from the comments, I think I will do a video explaining some of this. There seems to be a lack of understanding on the stress in raw materials, due to the way they are manufactured or heat treated.
@@EdgePrecision the channel 'Alpha Phoenix ' has a great defense of his paper.
@@cricketshine1160 I watched his video on the copper play button (I assume that is the one). Interesting video. I guess that's what you are referring to?
Great video Thanks
if you put white card board behind ruler - lay on pedestal base gap will show up better on camera
someone at the aluminum mill figured out they don't need to do stress relieving any more, will save them 20$, which then results in 200$ extra work when someone tries to make a part out of that stock
Thank you for sharing
I don't know if it's just me but doesn't he just look so happy to be doing what he's doing? Around 4:50 Lol
Hey what brand of machine is this old girl?
Hi Peter!!
amazing how the Microphone picks up the duburring operation......
Oh come on, you know all you have to do is hold the print up to the control and press start and get perfect parts every time. 😁
Hey Peter, you talked about your Hitachi Seiki machines from the past. I am owning a Hitachi Seiki VK45II, and I'm really happy with my machine. So my question is, what kind of machine do you had, and what are the positiv and negative sides of the HS Horizontals?
By the way, excellent work as always.
The main problem with Hitachi Seiki machines is they are no longer manufactured. When I owned my e the company sort of went out of busness. t least the USA part. Mori Seiki took over part of it. My machines were still under warranty when this happened. But Mori Seiki said they would not honor the warranty. This left me with a bad impression with both companies. I thought the horizontal mills were good machines. But now I would not personally own another one because of the lack of spare parts or support for them. And I will not even consider a Mori Seiki because of the way they handled that situation.
Is there any pre machining heat treatment that would minimise this effect?
It may be possible. But the metal is certified. If any heat treat is done it has to be re-certified. That would require taking samples and doing psychical tests for physical properties. It is better to change the machining process to account for the stress in the material.
@@EdgePrecision 👍
Would normalising heat treatment fix you warping issues?
Normalizing is more of a ferrous metal heat treatment. But even if some stress relief could be done it would change the certification of the material. So then you would have to have extra material to run test samples to recertify the material. This could possibly be done. But it is just better to change the machining procedure to account for the distortion. I really should have been doing this all along. Up to this point I have been lucky with the material.
Peter, could you just rough the radius in the raw stock and finish from there? I assume you must have some tolerance that says otherwise. Seems like your 5 inch faces aren't parallel on the finished part. How about a Mexico update when you get a chance. Thumbs up here good sir.
That's what I'm doing here. This is the raw stock I'm roughing it. Then I will finish to size. My wife and I are going to Mexico in October to meet with out contractor on that project. After that I will make a video on what's going on there. Thanks!
Cool vid, thanks! In your experience, what do you think changed in the manufacturing process to create the out of flat effect from machining now, versus you saying it did not used to do that??
The material supplied is different. Up until now, I guess I have been lucky with the material. This new way I'm doing is better anyway.
Regarding your deburring. Is that just to stop u from getting cut while moving it on the pallet, or is there another reason? Love ur stuff.
Peter mentions in the video that it's for safer handling.
Good work as always !
I'm a bit perplexed about the use of oil drums as chip containers, almost every american shop video i see they use them, even the people with brand new million dollar machines and forklifts are rolling around 55 gallon barrels.
Is this just an old habit that have stuck around ? You can buy a brand new 400+ gallon tipping container for like $1000.
In this case the way the machines are positioned we can’t get a hopper in there. Also it tends to be that way because of the scrap dealers here. They all use 55 gal drums to transport their scrap. There are so many different materials being machined so you really can’t have bigger bins outside to dump hoppers into. It’s kind of hard to explain in a comment. It’s just easier to dump the shavings into the drums right from the machine. Also there is the problem of theft. The drums are picked up every week. If you have containers outside here in Houston. People will come and steal the shavings to sell to the scrap places them self’s. Selling scrap here in Houston requires identification or they won’t buy it. Especially if it’s carbide.
@@EdgePrecision Okay that explains it, Thanks. The scrap dealer market used to be a very shady businesses over here in Sweden as well. They got rid of the worst of it now though with tougher regulations/requirements only the bigger more serious firms can stay in businesses.
It's great to see your videos amigo!! There's tons of things that can be taken from your videos over in using a manual machine. What model of Kurt vise did you use on this video?
This is just a standard 8.0" Kirt vise. I think the model is a D810.
@@EdgePrecision Thank you!
If someone could make flat metal, they would be a trillionaire🤣
7:23 why is there a sad face on the vise? :D
If you go watch my video named "Stock Prep And Mazak Anvil Fixture For 14 Lb Anvil" (I think that's the video). You will see it happen. I was paying to much attention to the camera and forgot to switch the axis on my jog pendent. So I jogged the face mill in Z, into the vise instead of in the X,Y plane. Jus a stupid mistake. It happens.
@@EdgePrecision ouch
why's that garage have a spindle on the wall
can you indicate the parameters you used every each cutter for designated toolpath.
and applicable for every rawmats grade.
thanks its help me a lot.
I didn't catch what material that is. I'm guessing 6061 T651? from the way it distorted. That is what I call potato chip distortion. Long ways the surface is in tension and width ways it is in compression as a result of the stretching process.
The stress is not just in the skin, the stress goes all the way to approximately the center at the neutral axis so lopping off 1/2 inch each side doesn't really change much. Unfortunately when the material has that stress pattern, whatever you do to reduce distortion in 1 direction makes it worse in the other direction.
To reduce long ways distortion try machining all 1 inch off the side opposite the U. To reduce the distortion width ways, try taking off all 1" off the U side. Hope I got that right. Neither will be perfect.
The only way I know to really get it straight is to sneak up on it by repeatedly machining it over and over again until you reach final size. It's a problem that has caused us lots of misery and expense. The stronger the material , the worse the problem becomes because the yield strength gets higher so it can retain more stress.
Just try to keep in mind where your main features are in relation to the neutral axis and try to balance material removal equally around it. Good Luck.
7075-T651.
@@EdgePrecision You can get that report here www.osti.gov/servlets/purl/922073/
Thanks Peter!
Man, all that metal moves like it's made of rubber!
Most people tend to think of metal being solid and immovable - obviously it moves a lot!
Is it possible to remove stresses prior to machining?
Maybe by way of heat soaking?
Thanks!
You're a good teacher! :)
Thanks! Possibly. But that would change the certification of the material.
It depends on the material. Some can be heat treated to be a harder structure and resist the internal stresses. Other materials need to go through a process called annealing which does what you described. It's heated up, and then allowed to cool quickly which gives up some strength, but allows easier manufacuring because it is a more stable alloy.
@@EdgePrecision Actually there is a technique called "uphill quenching" that does not change the strength of the material but apparently does remove some of the residual stress. Might be available from your supplier, I have not used it. I don't know if it would work on 6 inch material.
👍👍
looks like an 2/16ths out, boss
I checked it. If I lay the straight edge and put a .015" shim under each end. Its about that much or .015" out of flat. It just looks like more when you rock the straight edge over it,
@@EdgePrecision achievement unlocked! huge fan of your channel... im metric so imperial is so new to me
Hiya Peter
What's the part for?
Sorry. This is something I cant talk about. This customer doesn't like it. In fact they made me take down some videos just because I eluded to the parts name in the title.
@@EdgePrecision thx 4 the reply, a secret is a secret lol, nice work anyhow
1
should be caused by stress
Yes it's the stress in the surface of the plate. Everything thing is in a balance the compressive forces at the surface of the plate are equalized to each other before I cut into it. The cutting of the radius slot reduces the force on that face so the whole plate bows into it.