First the ultimate question I have, followed by more details below: How do you retain work piece zero over multiple days?
So my MPCNC (22"X, 11"Y, 3"Z working area) is my first CNC router ever. Dual endstop firmware (but switches are not installed yet), ramps 1.4, fusion 360 CAM.
I’m starting to get the hang of work locating, CAM tool paths in fusion and the endless rabbit hole that is feeds/speeds/chip load/and MRR. My plan is to make some coaster sets for christmas for friends and family. The coaster design has rounded top and bottom edges with an inset pocket on the bottom for a cork insert.
So far working in pine I have had satisfactory results milling both sides, using locating pins and getting the design to come out how I want it. The issue comes in that I set workpiece zero at the start of the first cut and then mill for 6 hours straight without shutting off the machine to retain it’s zero reference.
The coasters are going to be milled out of hard wood which is likely to require longer milling times due to lower speeds/feeds required to maintain appropriate chip load on 1/8" mills. So the question becomes, how do I keep the workpiece reference zero so that I can mill one operation, leave the workpiece in place and come back the next day and start the next operation?
I’m sure I’m just being dumb and missing something here. Thank you!