Ode to Screw Jacks

[BROCKWOOD]

Show your creative uses of screw jacks!

 

[benmychree]

Just the sort of thing that they are made for.

 

[westerner]

That sure is a pretty jack ya got there. Build it yourself? Got any to sell?

 

[cathead]

Bird stand.

On a more serious note, I like your idea Brockwood.

 

[mattthemuppet2]

not a standalone unit, but Brockwood's bandsaw pic reminded me of the screw jack I built into my new 4x6 vise jaws


the threaded part attached to the moving jaw flips up to allow quick repositioning (or removal) of the screw. It's really handy and I've used it way more than i thought I would.

 

[mattthemuppet2]

I do need to make some actual screw jacks though, could have used them several times, eg:


made do with a carriage bolt and nut, but a screw jack would have been so much easier

 

[Liljoebrshooter]

I made these up a few months ago. I have used them several times now.
The next set i need to make is ones that are shorter. Maybe from 3/4" min. to 1 1/2" max height.
Joe

 

[Parlo]

Here is my latest attempt for a fast helix screw jack - 30mm lead. The black plastic piece is the clamp.

 

[Provincial]

I don't have a photo, but I did use a machinist jack when I resealed the track adjuster on my D-8H-46A. When I reinstalled the rod (with stiff plastic cup attached) in the bore of the adjuster, it didn't want to slip in. In order to get it started, I put he jack between the idler yoke and the end of the rod and extended the screw. Once the seal got fully in the bore, I was able to collapse it enough to reassemble the system.

It was a big advantage to apply the pressure directly in line with the axis of the bore, and to have full control over the amount of pressure applied. The amount of torque it took to turn the screw gave feedback on how well the seal was entering the bore.

 

[Firstram]

Here is my latest attempt for a fast helix screw jack - 30mm lead. The black plastic piece is the clamp.View attachment 435901

I'm not so fancy