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General Mach Discussion / Mach3 motor velocity limitations, velocity

« on: June 25, 2019, 10:30:05 AM »

Very new to cnc routering. My current setup is a warp9 smooth stepper, chinese 5A BOB, i/o expansion board, 425oz stepper motors. Running A slaved to my Y axis on 20mm (5mm/rev) linear rails. This is home built. My question is finding my sweet spot for feeds and speeds. Currently 3/4 MDF running 175 in/min @ 7000 rpm is cutting nice. I want to utilize more spindle speed and crank up my motor velocity. I have not got them to miss steps yet. Mach3 though is limiting my Velocity settings to 205 in/min. I input 300 and it defaults back to 205 and change. Is this the max? Is Gearing the factor that would increase my speed.