M52 to M42 adapter
Description
This is an M52 to M42 adapter (step down) ring. It is intended to be used for M52 focusing helicoids. I wanted interchangeability for M42 threaded adapted projector lenses, etc. With this ring m42 mounted lenses, macro rings can be mounted to larger, m52 helicoids. Outer ring: M52x1 Inner ring: M42x1 Height: 5mm I've created it by using elements from different models from this site. Small holes added to help the unscrewing if it locked tight into the helicoid. Printing: I printed it with PETG on Ender 3, without supports. Infill: 20% gyroid 0.28 layer height worked for me.
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