Hi! First post, but i’ve been following for a few months and have constructed a 30" x 4’ mpcnc.
Is it reasonable to just pick depths and speeds that seem comfortable to me? (machine doesn’t bog down, wood doesn’t burn, chips are small but not dust). For a 1/4" 2 flute router bit for instance, i’m at about 1/8" cut depth and 20 mm/s feed rate, ~20,000 RPM.
I went down the rabbit hole of googling proper settings and keep bumping into guides like this: http://www.freudtools.com/admin/manuals/SolidCarbideSpeedsinParticleBoard.pdf which seem to indicate I am probably destroying any bit I use and that maybe I shouldn’t be trying to cut 1/2" plywood with this thing as it is. I keep coming up with like ~70 - 90 mm/s for the proper feed rate. I don’t think that’s achievable for me and my trusty old rotozip rz20.
I mean it cuts ‘fine’ but I’m a n00b and haven’t gotten to a point where I’ve ever experienced tool dulling or anything.