bottle jack release knob

by jwmelvin, published

bottle jack release knob by jwmelvin Apr 12, 2018
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A press-on knob for the release screw on the bottle jack used in the Harbor Freight 20-ton press. It also appears to be the right size for the same knob on the 2-ton engine hoist, though I haven't tried that. I'm including F360 and STL files in case you want to modify.

Video of build here.

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hah that print head out of the way timelapse is so cool
The thing just "appears" from the build plate :)

Neat design...printing one up for my 12 ton horror freight press

I was pretty happy to find that OctoLapse plugin for OctoPrint. Still trying to get better focus but I agree it’s pretty neat. OctoPrint is really great especially since I moved my printer to a closet in the basement.

My theory with the fit for this part was that I wanted it a bit tight and planned to heat the release screw a little if I needed to get the knob on. But mine went on with a little persuasion from my palm.