Hey David,
Happy New Year, and I would be more than happy to help you with this.
The spacer rings are really a piece of cake, and I’ve updated the design to be much more simplistic IF made from Polycarbonate material (or other non-brittle material). The reason for the old version was to maximize flexability, as the 55mm spindle motor is not a ‘slip-thru’ type of spindle, meaning that the spacers need to be stretched a couple mm over the larger diameter caps at the bottom & top of the spindle. However, this is totally unnecessary, as the polycarbonate is plenty flexible for this application. The original design was far more complex than necessary.
So no, they were not 3D printed. I gave up on 3D printing sometime last year. I made mine out of 1/2" pc, leaving a ‘lip’ of .090". I would have removed one to get a better pic of it, but I machined them ‘too close’ to actual size, which made it very difficult to assemble. The ‘new version’ has been adjusted so that this should not be an issue (DXF file attached).
SPINDLE ADAPTER 55-65.dxf (23.2 KB)
This is a screenshot of the actual DXF file attached above.
I will say that I really love this spindle for my work, which is mostly plastics/composites/aluminum with small cutters. I did have a stalling issue with it for awhile after I moved it from my old CNC to the Onefinity. However, I believe this was an EFI issue, as the motor wires were crossing the coiled Z axis cable. Once this was dealt with, it has not stalled since. Plus, as I outlined above, I added a safety feature that will trigger a ‘cutter check’ command to my controller if the motor does stall.
Bracket that maintains separation from the Z axis cable.
