Wrong cut

[cropwell]

What are your steps per mm settings for x and y axis ?

[cncnescu]

I checked this at the beginning and it was fine...320 steps/ mm, 1600 micro steps on the stepper drive, 5mm / rev on the ballscrew.The same settings for all axis

[driftspin]

Yes, it will return to the position, so it's not the noise.

So this also rules out reversed polarity problems... right?


If you are convinced the total combined rigidity/flex cant be the problem....


You can try with a 6mm cutter with a lot less flex..



Grtz Bert.



Verstuurd vanaf mijn SM-A320FL met Tapatalk

[cncnescu]

Today I discovered that my VDF was set on CCW rotation and the cutter used for MDF was a right hand one. After changing to CW on MDF I get the right dimension.
However on the wood plate on a 40x40 square it's all perfect, but when I switched to a bigger 80x80 square I get again wrong dimensions 80x79.8.
Normally it should work also on a bigger square but at least half of the issue was solved.

[Dave_stoke]

Today I discovered that my VDF was set on CCW rotation and the cutter used for MDF was a right hand one. After changing to CW on MDF I get the right dimension.
However on the wood plate on a 40x40 square it's all perfect, but when I switched to a bigger 80x80 square I get again wrong dimensions 80x79.8.
Normally it should work also on a bigger square but at least half of the issue was solved.

It isn't hitting soft limits and closing down on that axis?

Sent from my F8331 using Tapatalk

[magicniner]

With such a basic error as running your spindle backwards I suggest you run through all your settings and calculations again and check X, Y and Z travel in several areas with a dial guage to ensure your calibration and and other assumptions are correct.