Finger Joint Clamp

Feb 04, 2007 1 Replies

On Jan 8, 11:22 am, I, wrote in thread "Finger Joint Pitch" in rec.crafts.woodwoorking:



I have ordered a box joint cutter for $24.95. It has five blades 5/32
> inch. It should do nicely. I have updated my PDF locally but not on the > FTP site.
> The new cutter is a delight and box joints proceed with a 10-24 pin
> screw through the fingers. Very nice. I have a long nut tap coming to
> finish these threads in the wood.
> I would like you all to comment on how a 4 inch cross vise might clamp
> such a joint for drilling that pin through the leaves in such a way
> that the fingers were forced tightly together by the clamp. Sort of a
> big vee to take the legs, and little knives to grip and force the wood > inwards?

The vise has removable jaws of flat steel about 6 mm thick and 1x4 inches. The screws are, I supppose, about 2 inches apart. If I use a 3x3x1 block of steel and saw two miter cuts that meet in the center with a milling setup, that would be pretty close.


I guess I have to draw it out.


The Dougster


Doug Goncz Replikon Research Seven Corners, VA 22044-0394

I have drawn it out and a 1x3x4 inch block from the 1x3 inch bar I got from MSC will do it. Cutting that block off the bar will let me use the new tile saw wet with kerosene and a carbide blade instead of water and diamond. Better use a low-volatile coolant. I don't want to breath it or blow the house up. Maybe a varsol with some oil and wax.

I think I am going to have to mill the miter cuts and use an angle gage to set it up. I'll probably have to put a clock gage on it to make sure it isn't slipping during cutting, feed really slowly, and use a drip of kerosene.

I've already got a model in wood.

Doug

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