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UPDATES: Added version with mounting screw holes countersink so knob does not collide with screw head for those using full sized screw heads. This focuser is based on the Crayford design, where a smooth pinion is rolled along a smooth…
To make 1 clamp you will need the following hardware: McMaster-Carr specifications: (1) 94459A220 M5 Heat-Set Inserts for Plastic (1) 91595A139 Dowel Pin (6) 91290A270 60mm bolts (2) ¾" threaded balls (1) 1692K52 conical spring (1)…
This is the 1" version of my UTA ball clamp, see the ¾" version here: https://www.printables.com/model/321046-34-inch-uta-ball-truss-clamps To make 1 clamp you will need the following hardware: McMaster-Carr specifications: (1) 94459A220…
Change the “UTADiameter” parameter with the diameter of your telescope tube for it to fit your tube. I tested this for diameters from 4" to 25", so it should work for any telescope tube in between. I use this same adapter on my 10"…
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