I picked up a 1/64" end mill from McMaster (http://www.mcmaster.com/#3066a53/=vcau4n) for doing some fine finishing work on molds for resin casting (gears and such).
I used the information from that McMaster page to populate the values in the MeshCAM tool editor like this:
I am assuming that length of cut should correspond to flute length and that helix angle is the same as taper angle?
What are the rules of thumb for figuring out appropriate spindle speeds? Is it based on the material of the tool only (this is a carbide endmill)? Something else?
What about the default feedrates, plunge, stepover, and depth per pass? Are there good rules of thumb for these values based on cutter dimensions? Does anyone have a handy reference?
When I tried to use the tool definition above, I ran into a bug in MeshCAM:
Assertion failed: (“ERROR in drop_cutter() Flute Length <= 0” && 0), function drop_cutter, file /Users/robert/projects/meshcamapp/libs/camlib/src/cl.cpp, line 496.
Robert, did I do something wrong, or am beyond a typical use case with a cutter this small?