Oh mate... Im a fitter turner with many years of mill experience... You are running way way way too fast and you need to use coolant..that and a saw blade isnt nice mild steel. I was amazed that it went for as long as it did.
A fail yes and a glorious one at that as expected. This was done more to show that yes it will cut it and no you should not do it and a good reason why. I did this knowing ahead of time knowing what can happen and at what expense it may bring. Now I do have a scrap of Inconel 718 but that would be no fun that would be like poking a whale with a sewing needle.
Most likely the tool got dull and the stepper motor missed a bunch of steps because it became overloaded. The machine does not have a closed loop (the control does not know if the motor actually moved to the position that it was commanded to go to) and it keeps sending commands to the motor based on step and direction with no feedback.
When it went off course it didn't break the bit at all... that was a pretty deep cut it was pulling off! Just no power in the steppers to keep it on course I guess?
What happened was the drive belt jumped teeth throwing the path off the steppers just kept chugging along on the new path caused by the drive belt. the bottom of the flutes on the bit were shattered well all but one the bit itself still cuts wood just fine
I have a slightly beefier cnc router (CNC router parts) that I'm wonder about whether I can pull off steel... any thoughts or advice based on your experience with the x-carve?
high rpm seems to work with 100ipm and shallow passes and a good bit. slower feeds cause heat build up. @ 100ipm+ there seems to be no real issue with heat and no coolant and the bits are lasting longer. these bits are designed to run hot to make the coating do its job. Coolant seems to be what is killing the life of the bits. from what i have been reading the windage from the bits high rpm can prevent coolant from being in full contact causing heat cycling witch degrades the bit. That is how I understand it anyhow and seems to hold true from my experience. mild steel is pretty easy but if you can get it try some c360 brass $$$ but the machine loves it lol
Tried a few times the blade warps pretty bad. Even cut a slot from the center out and no go. And the ones that did come out flat ended up having stress cracks. I did this one on the cnc for my own entertainment.
Settings were 1 on the dewalt I believe that is around 16,000 rpm X,Y was 150 ipm Z was 1ipm DOC. per pass was .001in. I will continue this when the rest of the bits arrive. So far with these test speeding things up is giving better results and better tooling life with shorter machine times. These test I have been doing are based off of high speed machining processes many with large cnc machines are doing.
I was about to say "Isn't that phenomenally fast? I'm running around 30ipm as standard for mine" but apparently if this is what the big guys are doing, why not try to bring it to the little machines
@@teapoweredyugi I was also thinking slowing down is better which it usually is but I found that i get better results with faster speeds and low RPM depending on the material.
depends on the bit used I do some in a oil bath or coolant this particular bit has given better run time and performance when run hot. Don't know why but it just does.
it is amazing ! please do more videos like this, and the information about the speeds and feeds is great too. thanks.
So close! I have aluminum cutting very well but I'm sceered to try steel lol Thanks for sharing!
Human error. Next time I will stay on the other side of the shop so the machine can work it's magic.
Oh mate... Im a fitter turner with many years of mill experience... You are running way way way too fast and you need to use coolant..that and a saw blade isnt nice mild steel. I was amazed that it went for as long as it did.
Shit
. I wouldnt even wang to put that knife/sawblade through one of our machining centers
A fail yes and a glorious one at that as expected. This was done more to show that yes it will cut it and no you should not do it and a good reason why. I did this knowing ahead of time knowing what can happen and at what expense it may bring. Now I do have a scrap of Inconel 718 but that would be no fun that would be like poking a whale with a sewing needle.
What happened at the end there? Everything looked to going ok until the machine went flying off course.
Most likely the tool got dull and the stepper motor missed a bunch of steps because it became overloaded. The machine does not have a closed loop (the control does not know if the motor actually moved to the position that it was commanded to go to) and it keeps sending commands to the motor based on step and direction with no feedback.
Wife unplugged it and flipped the table over. Too many metal shavings everywhere
@@brandonwalker4911 In his comment, he reached over the machine and his coat sleeve got stuck in the belt. :O
When it went off course it didn't break the bit at all... that was a pretty deep cut it was pulling off! Just no power in the steppers to keep it on course I guess?
What happened was the drive belt jumped teeth throwing the path off the steppers just kept chugging along on the new path caused by the drive belt. the bottom of the flutes on the bit were shattered well all but one the bit itself still cuts wood just fine
I have a slightly beefier cnc router (CNC router parts) that I'm wonder about whether I can pull off steel... any thoughts or advice based on your experience with the x-carve?
high rpm seems to work with 100ipm and shallow passes and a good bit. slower feeds cause heat build up. @ 100ipm+ there seems to be no real issue with heat and no coolant and the bits are lasting longer. these bits are designed to run hot to make the coating do its job. Coolant seems to be what is killing the life of the bits. from what i have been reading the windage from the bits high rpm can prevent coolant from being in full contact causing heat cycling witch degrades the bit. That is how I understand it anyhow and seems to hold true from my experience. mild steel is pretty easy but if you can get it try some c360 brass $$$ but the machine loves it lol
when you loop the belts through, use heat shrink and you won't have teeth jumping. I'm glad I picked up that tip when I assembled mine.
@@bradycases That's a great idea. Using zip ties now but they are kind of not very low profile!
loved the way you edited the video
Best fail vid to come outta my shop.
It was dope
I would have heated the saw blade to soften the metal first. Might have worked better.
Tried a few times the blade warps pretty bad. Even cut a slot from the center out and no go. And the ones that did come out flat ended up having stress cracks. I did this one on the cnc for my own entertainment.
That was pretty sweet though!
What speed and settings were you trying again?
Sorta heard some of it.
Really like these x carve experiments you do!
Settings were 1 on the dewalt I believe that is around 16,000 rpm
X,Y was 150 ipm
Z was 1ipm
DOC. per pass was .001in.
I will continue this when the rest of the bits arrive. So far with these test speeding things up is giving better results and better tooling life with shorter machine times. These test I have been doing are based off of high speed machining processes many with large cnc machines are doing.
I was about to say "Isn't that phenomenally fast? I'm running around 30ipm as standard for mine" but apparently if this is what the big guys are doing, why not try to bring it to the little machines
@@teapoweredyugi I was also thinking slowing down is better which it usually is but I found that i get better results with faster speeds and low RPM depending on the material.
@@shanebellimpracticaldesign wasn't it 0.01" DOC?
Wicked!! Thanks, Shane!
Which type of gcode sender do you use for your machine?
I use 2 different ones depending on the mood they are doth great programs
one is easel by inventables free
and the other is picsender $24.95 U.S.
yea, a knife made from saw blade metal might be a good knife.
Cool!
Can you share the bit being used?
www.ebay.com/itm/381775086010?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
*UNZIPS PANTS*
g code issue. it cut the steel just fine.
Physical disruption of gantry movement from a outside source.
outside source= you? lol....
Who me never lol. Well maybe ok yeah it was me.
put oil on this.
Keep the bit oiled the whole time
depends on the bit used I do some in a oil bath or coolant this particular bit has given better run time and performance when run hot. Don't know why but it just does.