Hi Guys, i now have my self a 6090 cnc from china and its working amazingly for the most part exeppt when it comes to speed, as for right now i am cutting at 500mm/m when i stepped it up to 750mm/m i lost steps over then course of the job (i am cutting aluminium with a 4mm endmill at 2mm doc) the microstepping is set to 1/8 and its running nema 34s at 70v. i could step it down to 1/5 micro stepping but that may be pushing it to low. so my question is what's best to do? i could go lower in the steps, i could buy new more powerful motors or maybe i am just stuck

thanks in advance Oli