Parallel Toolpath doesn't machine complete model surface...

[tom_beatonLZJJF]

Hi Gang:

I am machining an electric guitar fretboard that has a compound radius.  For clarity (in case you're not familiar with a compound fretboard) the surface is slightly curved and flattens out somewhat as you move from the headstock end to the body.  The fretboard also widens as it goes in that direction.  I swear I've done this before with no issues but the last time I did it the outer sections of the wider end are not being machined.  It does the radiusing fine but misses machining the edges of the wider section.   Its like the parallel isn't moving in increasing wider passes as it moves up the fretboard.  I've tried adjusting the machining boundary in every way I can think of as well as adjusting the WCS but it doesn't solve the issue... or even make it slightly better.  Ive attached some screenshots showing the path on the one end vs the other as well as the machining boundary.  I'm baffled....    

[a.laasW8M6T · Accepted solution]

Hi

This is most probably due to the Fixture Clearance value in the setup.

You can Globally change the value in the setup:

Or you can change the clearance on a per toolpath basis by changing the values in the Fixture group of the machine/avoid table

You can see here by entering -2 here my total fixture clearance is now 1mm(the setup clearance was 3mm)

[tom_beatonLZJJF]

You absolutely nailed it my friend.  Mine was set to 5mm both Radial and Axial.  Probably solved a couple other issues that I've been having as well.  Very much appreciated.

If I could buy you a beer I would.  Hopefully this one will suffice!  🍺

Thanks again.