[stevewebster]

I just switched over from using a shopbot control box to a Gecko g540 set of drivers.
Right now the software I am using is Rhino 4.0 SR6 build 09/07/09 , Madcam 4.1 build 09/08/28 and Mach3 version 3.042.029.
I am post processing with MACH-3-INCH.TXT. This is my first experience with using Mach 3.
My problem is that at every square corner I am getting a tapered radius about 1/2 by 1/8" long .
This happens on every corner as the cutter approaches the corner.
This does not show up on the rhino drawing or the cut simulator in madcam , nor the simulator in mach 3 but is there on every piece I cut .
Any body have a clue what might be the cause of this.
Steve Webster

[ger21]

Probably CV mode (G64) . Try running in exact stop mode (G61) and see if it cuts square corners. If it does, then increasing the acceleration will minimize the corner rounding. THE CV docs might be of some help as well.

http://www.machsupport.com/docs/Mach3_CVSettings_v2.pdf

[stevewebster]

Thanks for the quick reply. I'll give it a try.
Steve

[stevewebster]

Hey Gerry Thanks for the help. Your suggestion worked perfectly.
I changed parameters in the cv settings but in the end it was the acceleration rate being higher that gave me square corners.
Thank you so much.
Have a big deadline with about 80 sheets for a tv set and I had a shopbot die this week. New gecko drives mach 3 and a client under pressure.
Saved my bacon
Steve