Hi,
I'm using this setup:
Material: 3mm plywood with 6mm wasteboard.
End mill : 1mm, 2-flute
Pass depth: 0.3mm
Stepover: 0.1mm (10.0%)
Spindle Speed: 15000 r.p.m
Feedrate: 25.0 mm/sec
Plunge Rate: 10 mm/sec
This is part of a 2-toolpath file, but it broke off after a few seconds making a small hole. My passes were 0.3/0.9/1.5/2.1/2.7/3.1, so 6 passes in total for a 3mm thick board.
My Pocket Toolpath was a "Raster, Climb, Last", with all other settings default.
I think there are a few reasons why the break happened:
1 - the plywood was "bending" up a bit because it was being pulled by the bit, and that distorted movements in XY.
2 - some of the settings didn't match the bit capabilities in terms of overload
3 - other reason i'm not thinking of.
Any ideas to determine the reason for the bit breaking off?
It broke off the cutting part of the bit, while the Shank stayed inside the collet..
Thanks!