Good morning everyone. I am so brand new here with my shapeoko xxl that I don’t even know how to run test files yet. So please bear with me. That being said my buddy who has been using his shapeoko flawlessly for the last 3 plus years is stumped. He came by and checked my build for me. V wheels and eccentric nuts are correct. Belt tension is correct. Machine is level and square. No slop in the machine. Everything as far as he can tell is solid. We used a V carve but to just carve a name in wood. He noticed right away that something was off and after 15-20 test runs he cannot figure out the problem. He said the machine is slipping somewhere.
The issue is with a letter “O”. On the right side of the O there is a bump and the letter doesn’t fully, and smoothly meet up with itself. He ran a row of “O” from left to right and it got better the further right it went but still not correct.
He checked everything he possibly could and was stumped. I don’t even know what to do now. Being extremely brand new at this I don’t even have the knowledge to discuss back and forth with anyone I feel like and that is probably the most frustrating part. Obviously my buddy is busy and can’t be holding my hand every minute through this problem. I don’t know what to do and hopefully someone in the community can point me in the right direction.
If belt tension is right it may be worth looking at the set screws on the gears attached to the motors. The only places it can slip are the belts and those gears. Other than that, maybe a wire to a motor is loose.
It’s easy to overlook a set screw issue. One possible way to double-check them is drawing a straight line across the pulley and shaft (with a marker), like so,
then cutting the “O” with the issue, and checking whether the pulley and shaft are still perfectly aligned then.
Also, you may want to try cutting straight horizontal and vertical lines. We had a thread recently that turned out to be a problem of geometry of a V-wheel, even though everything was nice and tight. I’m not saying this is the same issue, but cutting straight lines could provide additional hints.
My buddy who has literally checked out every aspect of my machine for me has narrowed it down to the X. He also has noticed a hesitation and “bumping” when the router is traveling East/west. Belt tension has been checked and rechecked.
The machine is level, square and tight.
I have the latest versions of the software running.
He is wondering if it could be a bad V wheel. Does carbide 3D send out replacement parts? He believes it to be a mechanical issue at this point