Summary

The adjustment wasn't granular enough for my taste, so I doubled it. Now instead of having 12 stops, it has 24. This doubles the number of positions that a threaded arm can align with a non=threaded arm, adding stops halfway between the existing stops.

I made these for a different project, where I printed them at half scale. After I made the adjustments, I scaled them back up to share them here. I haven't printed them at this scale, but they work great at half scale.