Thread: Box joint jig.....

Well Randy, if you need inspiration, I managed to tap two, that's right two, holes tonight!

I look forward to your finished product. I too hope to make a box some day.

Originally Posted by randydance062449

Update.....
Padre and I worked on the finger joint jig for several hours today. A whole bunch of things went wrong but we did learn a lot. One of the main complications was that the design is to complex. The design envisions the ability to adjust for different sized box joints. This adds to the complexity significantly and is of questionable value. Padre has a jig/fixture for a specific size of joint. Its simplicity is appealing.
I would not mind having several different fixtures each for a specific size of joint.
Padre did notice one element of the design which he liked. The ability to micro-adjust the stock rest. He is thinking of how to add in that capability now to his fixture.
I will be going on to version 3.0 of this fixture. The thickness of some of the wood will be increased to accommodate the threaded inserts, mounting plate for the micro-adjuster and other screws. A vertical drilling fixture will be built to make sure the 2" long holes are straight and I will try the MDF because of its flatness and the predictable ease of drilling.

Not giving up on this....

Here are some pics of my jig. This is only for a 3/8 joint and can be used on the table saw OR the router table. I worked the adjustment idea over and over in my head and arrived at the simplest solution I could find - a Rockler universal fence clamp. One hole in the back of the jig holds the pin and the adjustment knob moves the front half. The downside of this arrangement is that it only adjusts one way. I'd love to find a simply way to adjust it backwards and forwards. One step at a time.

That is pretty close to the same design that I use too

Originally Posted by Padre

The downside of this arrangement is that it only adjusts one way. I'd love to find a simply way to adjust it backwards and forwards. One step at a time.

Attach another at the other end?

Yes, I think I could do that. I'll look into it. It needs some more tweaking, but could be done fairly easily.

Originally Posted by Padre

Yes, I think I could do that. I'll look into it. It needs some more tweaking, but could be done fairly easily.

I was thinking some more about this and may have a better idea. I will talk with you about this next week. It is a simple idea that would allow back and forth adjustments with the turn of a single knob, a threaded shaft that runs the full length of the back piece thru a threaded nut that is attached to the back side of the front piece of the jig. I am sure that something is missing but it is a start.