|Project by Jim Rowe||posted 08-07-2016 04:29 PM||1478 views||5 times favorited||5 comments|
I was very impressed by Kiefer’s Leg Vice (http://lumberjocks.com/projects/229242) which he posted earlier and he very kindly sent me some extra pictures of the basic assembly so that I could get an idea of the build. Using these pictures and some imagination I built my own version using off the shelf redwood for the frame and a collection of pieces from my wood pile for the chop and the vice jaws. It was time to replace my old Paramo vice which was very prone to racking.
I used 20mm trapezoidal rod secured and suspended in appropriate nuts and bearings to give a smooth function. The thrust plate attached to the hub uses UHMW plastic and runs against a similar piece on the chop. One complete turn of the hand wheel moves the jaws about 4mm.
The handle was made using a tricast weightlifting weight (2.5kgs) to which I added three “handles” made from off the shelf file handles – I don’t have a lathe so these provided a good cheap solution.
The frame is made from three laminations of 90×19mm redwood so is quite meaty!
The jaws themselves were made from some figured ash that was part of the same boards that I used for my bench top some years ago. The jaws are lined with 3mm latigo leather and I also made some jaw inserts from aluminium angle in case I want to hold any pieces of metal.
The jaws open to about 250mm and have a similar depth. The grip they exert is quite impressive and it is quite incredible how much pressure you can exert from the handle. Significantly the jaws do not sag when they are opened and there is no racking if small items are gripped off centre.
The biggest problem I encountered was sourcing the threaded rod as most retail suppliers seem to produce only small pieces for use in CNC printers – my threaded rod is almost 700mm long and 20mm in diameter.
Any comments or questions appreciated. Thanks for looking.
-- It always looks better when it's finished!