2in Crayford Focuser MK1
grabcad
2in Crayford Focuser specifically for 3D printing.If you are using VHB/double sided tape to stick he bearing runners down to the surface of the draw-tube the present offsets are correct on the feature "tune bearing surface depth" on file CRAY_2in Drawtube. (the aluminium is nominally 1mm thick but on the CAD I have made the depth 1.3mm to account for the VHB thickness also)If you are gluing/epoxying the strips down, please suppress or adjust down to zero the feature "tune bearing surface depth" on file CRAY_2in Drawtube.Full assembly instructions are detailed on my telescope making webpages here:https://marcosatm.com/2020/06/04/2in-crayford-focuser/
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