I was also thinking about the milling feature. Speed certainly isn an issue, but what accuracy can be achieved?
If you buy a machine that can go 1,000ipm then it most likely will not hold the same tolerance as one that will not, unless you pay more for a higher end electronics setup. It comes down to gear reduction when all other things are equal. We gear our machines down so that they can achieve tight tolerances given the electronics that we are using. Beyond that it comes down to how sturdy the machine is because deflection will cause a decrease in tolerance as well. By no means is our little machine going to maintain the tolerance of your Bridgeport Mill because it is just not massive enough. We get past this by taking smaller bites and in turn taking more passes.
