More Solid Spindle Mount

My version of the spindle mount, I had Bartnik's original design crack along the linear bearings, releasing the bearings. I thought the wall holding the bearings was too thin and the t-nut placement was causing this weakness. I moved the t-nut to the bottom, significantly thickened the top part of the mount, and made it so that the hole on the top was big enough to accommodate my coupler. It may not be large enough for your coupler, so be ready to modify it as necessary (the hole is 16mm across).

IMPORTANT: I found the strength of the part went up significantly when I increased my wall thickness to 1.6 mm and the wall count to 4. 40% infill using gyroid is also what I used, but cubic would work well too.