With Mach2, geckos, newer easter devices 4amp nema23 steppers, 10tpi leadscrew, and my schoos lame minitech minimill, we easily get 75IPM rapids. at this speed(750RPM!) i have seen at least 2 axis moving at this rate - all on a PIII550 with 128mb RAM. Thats with 10x microstepping... SOOO.. thats 2000steps per rev.. so.. 2000x10=20,000x2=40,000hz... Wierd. We have it set at the lowest speed, which is 35,000.. Maybe it wasnt really going 75ipm.. Our mill cant run that fast, btw, it is scary watching the ill-balanced leadscrew spin at 750rpm.. Stinking mini/mill2 POS
hard to believe we were seeing 60,000KHZ from this setup - but we must have been. Incredible. And the device was
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