[ATM] Crayford Focuser Pinion

["Marco Miglionico" <marco.pm@btinternet.com>]

Hello all.

I'm starting to make a simple crayford focuser
but am needing some help.

Should I make the drawtube PCV or Aluminium,
or any other ideas?

My pinion for moving the drawtube up and down will
be a 6mm (OD) aluminium tube but I need to coat it 
in something to give it some friction against the drawtube.
I've thought about wrapping a rubber band around it but was 
worried that it might make the motion feel 'spongey'
Does anyone have any better suggestions.

Do you get 'paint on rubber?

Any help much appreciated.

Marco Miglionico

www.geocities.com/telescopiman



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