Sky Watcher focuser knob grip replacement

thingiverse

Replacement grip for the Sky Watcher focusers which loose their rubber grip and become uncomfortable to turn. This plastic piece goes in place of the old rubber band but with a trick. You need to print it in PLA, put it on the knob (it will be loose and go over the thicker rails on the knob) then put it in an oven heated to around 100℃. The heat will shrink the plastic making it tight and trapping it in place. You may need to manually adjust it while it's warm.