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homebrew Crayford
I recently finished a Crayford focuser for my 100mm F/6 RFT - picture attached in case anyone is interested. All the components came from Bunnings except for the focuser knob. The tube is PVC pipe with 50mm inside diameter. The bearings are shower door wheels, and the focuser knob is the barrel from an old pencil sharpener (nothing but the best for my RFT!). It is about as smooth as a GSO focuser, but about half the weight.
Phil
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