Filter/Arc Fitting/Surface Finish Problems

[Lucky]

I have had problems recently on a couple of jobs when filtering/arc fitting parallel finish toolpaths. The problems are visible in verify and the finished part. I have tried many values for cut tolerance and filter ratio. The problems have occured on irregular free form 3D surfaces. I only experience the problems with parallel cutting (ZX and ZY plane)with arc fitting enabled. The surface finish is good with no filtering (long program), or linear filtering only. Arc fitting if properly done should improve the surface finish.

 

Anyone have similar experiences or suggestions to help? I can upload the particular surface I'm trying to cut to the FTP site if needed.

[Zero]

Hmmm...shows in verify too..

 

What version are you running? If you upload the problem surface to the FTP, I'll try and take a look at it.

[Trevor Bailey]

Have you tried filtering "one way"?

[foolsh]

you gotta to make the tolerance quite tight eg 0.005 mm or else there will be a lot of lines along the cut direction.no point using filter