Hey,
I just wanted to say I got that tolerance issue all sorted out in the heart joint. Still not perfecto, but much better. Perhaps the maintenance sheet could be updated for re-tighting procedures, if there is such a thing. So for the wheels to engage correctly on the X plate according to the directions currently you tighten up with it 1/2 turn away and tighten.
Perhaps this is an issue with the original plates sent out to the early people, but I believe tolerances could differ so it might be worth while to add. Really 1/2mm up would be much better for the lower offset nut holes.
Here is how I adjust the machine. (about every 3 months or when too much flex is presented on the X gantry Y± direction)
- With SO3 on and engaged, set z height high enough to access bottom X plate bolts and offset nuts.
- Remove offset nuts/bolts and set aside. This would be a good time to use the back side of a razor or chisel to clear any sawdust/metal.
- Once removed, have the machine move negative Z until you can reach the top v wheel assembly
- One side at a time, loosen the nut. Place some downward force, and re-tighten down. (Replace with locknuts if you have not already)
- Repeat for other side.
- Assemble bottom offset nuts, as the original directions indicate.
- Initially feel how more rigid the Y± flex is
- Make sure your spindle is still square
- Mill some stuff!
Bonus: If you still have the stock washers between the V wheels and the steel plate check for warping. If the washer is warped, please replace. If you see too much slop in the bearings, replace it.