In particular, there is considerable slop on the z axis and a little in the x axis. Notice how I said "ideally"? Well, that refers to traditional machining.if you have a cheap CNC3018 KIT like I do, you DO NOT have an ideal machine. A deeper cut will require slower feeds and speeds, a shallower cut will require faster feeds and speeds. Ideally, you want to take as deep of a cut per pass as possible, to utilize as much of the cutter's edge as possible, but you MUST balance that with your feeds and speeds. This will generate friction and heat, could potentially harden the material that you're cutting before you even cut it, and will lead to bit failure. Too slow, and you end up nibbling away at the material, pressing *into* and burnishing the material instead of cutting into it. This will break your cutter bit real quick. Too fast, you end up generating chips faster than your cutter's flutes (EG, recesses) can clear them, which generates friction and heat. The basic idea: each cutter and material combination has an optimal range of "feeds" (meaning how quickly the cutter moves across the workpiece) and "speeds" (the RPM of the spindle). I've been reading into the differences between High Speed Machining and Traditional Machining. Today's lesson: Rigidity, feeds & speeds.
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