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A set of pre-drilled steel quadrants onto which self-made wooden jaws of your own design can be mounted using woodscrews. Large wooden jaws can be used for rechucking a bowl when removing a dovetailed recess or spigot, or for producing a variety of 'jam' chuck-type holding devices. We recommend steps in 12mm increments when producing your own wooden jaws.
16 July 2015
Lovely product, great ideaAn adjustable jam chuck, great! Two comments about the video instructions. First, you will need the long chuck key once the wood plates are on, it would have been good to mention that. Secondly: well, as we all know, video instructions gloss over or leave out the bit you really want to know. In this case, it's how do you fit the jaws to the chuck once the wood quadrants have been fitted? In passing I noticed that he'd taken the jaw holders (whatever they're called) out and presumably the idea is that you try to put them all back at once, complete with the plates and the plywood. Looks like a real faff. So I suggest the following: drill a 9mm hole right through the plywood at each bolt hole so you can fit them to the chuck in the usual way.
20 July 2012
well made, precise jawsWell made precise jaws that form a great base for custom wooden jaws.