Guys, i’m out of guesses right now.
Tried to face some aluminium as a test, mounted in a vise pretty high up, i think about 1/2" /12-15mm below max z wich should give it plenty strength.
Cut data: 480mm/min, .5 DOC, 1mm stepover, 2 flute 1/8" endmill @ 12krpm
As you can see (and clearly feel) there are some nasty steps. i tried aliging the spindle wich i pretty much failed at since there are no really good reference surfaces to measure of and even if, i dont exactly know how to adjust for it. wich screws do i need to touch? is it the tool that is not aligned with the machine? is the machine itself misaligned? i really dont know where to search the reason for the problem.
in wood, its the same thing but way less pronounced, i tried cutting either and both directions wich didnt make a difference. if i’m rotating the work 90° (using the x instead of the y axis to feed) it gets a little bit better but still nowhere near what you’d expect. i’m fully aware that you will always see milling marks, but in my book you should not be able to feel them?
please correct me if i’m wrong and its totally normal to feel steps when using the mpcnc. it certainly wouldnt matter for the stuff i do, but i want it as perfect and capable as i can get.
Thanks for helping!