Tolerance in madCam?

[OCNC]

I've been testing the entry level of madcam and came across an issue this afternoon. I was running an extruded profile along the x axis. It was 16 inches long (x) and 12 inches wide (y). Since it's a prismatic shape I was expecting that zig-zag along x would maintain a constant z for each y value (except for ramping at the ends of the run) but I noticed that the code is varying the z up and down in an apparently random manner by one or two thousandths in the middle of the x run. This causes unnecessary jerking of the machine and doesn't represent the actual mathematical definition of the shape. I'm wondering if there is some tolerance setting that I need to alter to correct this so that z will be at one value for each y. In this case the profile curve is an interpolated nurbs curve.

Thanks for any input.

Chris

[Dan B]

Hi Chris,

Tolerances are very important. Check out the information in madCAM's help file under madCAM settings. If that doesn't help, I'd be willing to look at your file if you like. You can send it to me at cncdanb@gmail.com if you don't want to post it here (although posting it here may get a quicker answer)

Thanks,

Dan

[svenakela]

You have 'em here as well: http://www.cnczone.com/forums/madcam..._settings.html

[OCNC]

Originally Posted by Dan B Hi Chris, Tolerances are very important. Check out the information in madCAM's help file under madCAM settings. If that doesn't help, I'd be willing to look at your file if you like. You can send it to me at cncdanb@gmail.com if you don't want to post it here (although posting it here may get a quicker answer) Thanks, Dan

I'll check out the madCam help tomorrow and see where I get.
Thanks.
Chris

[OCNC]

Originally Posted by svenakela You have 'em here as well: http://www.cnczone.com/forums/madcam..._settings.html

Thanks for the link.

Chris