I’ve been having this issue from the beginning but didn’t think much of it until after I levelled my frame.
I have an 8 x 4 full sheet machine setup, and to put it simply, every time I go to run a job and cut something, it will most likely, at any random time lose steps and via off to a different direction, or start turning before it’s supposed to because it’s lost steps etc.
At the start I thought it was because my spoilboard was not level, so one side of the piece might have 2mm cut, and the other 4mm due to the uneven spoilboard. So I thought it was getting stuck at the 4mm (eg) side because it was digging in too deep.
This morning was the first time I tried the machine after levelling the frame to within 0.4mm (I think)., and it did the same thing. Two times, first time on the 3rd pass, and the second time on the 2nd pass, both at different places.
My configuration was: 3.175mm downcut bit, single flute, 2mm cut per pass. X & Y @ 15mm/s, Z @ 5mm/s. Brand new endmill.
Electronics wise, I’m running the miniRambo, all parts supplied by Ryan.
It almost seems there is not quite enough power to the motors. Maybe the drivers aren’t providing enough current to the steppers? There is not ‘pot’ on the board that I can see. Does that mean the VRef is adjustable in Marlin?
I’m not sure what else to do. I have checked and I can move all Axis to their limits without an issue, every time, but under load it’s a different story. The settings I used today, I would think they are very conservative.
Any help would be absolutely awesome. Thanks guys