Harbor Freight 20ton Press Knob
thingiverse
This is for the knob of the Harbor Freight 20ton shop press or 20ton bottle jack relief valve. I got tired of having to use the handle to release pressure on the hydraulic jack so I made this knob to slip over the screw. For me the fit is pretty tight so once I slipped the knob on it was very stable. If it starts to become loose I will probably just add a small drop of glue and reinstall.
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