Hello folks,
I'm trying to mill out details in a 3D printed part using a Taig CNC mill (1100-10000 RPM, 30 IPM max (maybe)). The end mills that I'm using are .018" diameter 2-flute square Carbide TICN end mills with a .09" LOC (I'm doing some pretty small details).
I don't have any access to coolant capabilities or better equipment and need to figure out how to run the job without the end mill breaking. I've tried (among other attempts) 10000 RPM at 3.83 IPM with .009 DOC at 1.915 IPM plunge in PLA, which ended in breaking the end mill early in the operation from apparent melting and gummy gunk in the flutes.
I understand that ABS is a much better material choice (at least as far as 3D printable materials go) for milling due to the higher melting/glass point, and so I was wondering, given the capabilities of the mill (or lack thereof), and the absence of any coolant/continuous air application, what feeds, speeds, DOC, plunge, and other settings will solve my problem.
I've been warring with this issue for some time now, so thanks for any and all help in advance!