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MrRick
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Adjustable Box Finger Joint Sled for Table Saw
I do alot of handcut dovetails but there was a time I did alot of box finger joints. So much so that I designed and built my own custom adjustable sled for doing them.
Here you see the sled with the 1/2" finger insert.
Here you see the sled with the 1/2" finger insert.
The knobs on the back allow for micro adjusting looseness and tightness of the fingers. Test cuts are made and insert shifted accordingly.
This is a "stop block" that prevents the sled from disengaging from the table.
It is fitted over the front rail of the tablesaw and locked into place with two knobs. This also can be adjusted along the rail.
There are inserts for 1/8", 1/4", 3/8", and 1/2" (shown installed)
As mentioned each insert can be micro adjusted by loosening the knobs on the back fence, shifting, and re-tightening.
I also have waste pieces placed in front of finger insert so when cutting any tearout is minimized to eliminated.
Feel free to comment, ask questions and "thumbs up" if you like it!
Cheers!
MrRick
Please Note: The dado blade stacks for each insert are not shown in this post.
12 Comments
great jig rick. i prefer box joints over dovetails myself. i use a porter cable jig for box and dovetail joints.
working with my hands is a joy,it gives me a sense of fulfillment,somthing so many seek and so few find.-SAM MALOOF.
Themes Pottz. The jig works fantastic. Setup is fast and accurate.
MrRick Sir, well done. Anytime there is repetition in a process a tool like this that eliminates human error is the key to success. 👍👍
Nice job!
Ryan/// ~sigh~ I blew up another bowl. Moke told me "I made the inside bigger than the outside".
The micro-adjust is a good feature!
I have some fixed jigs that do great for short runs, 4-5", but as we all know the errors stack and when trying for 12", things need to be perfect 😩
I have some fixed jigs that do great for short runs, 4-5", but as we all know the errors stack and when trying for 12", things need to be perfect 😩
Nice setup! I made a jig special for my Kumiko experiments.
Steven- Random Orbital Nailer
Interesting! Like the adjustable festure!
Ron
Thanks Dark_Lightning! A jig for Kumiko sounds interesting.
You're welcome! No big deal, really. I bought 50 sticks of basswood from National Balsa, 1/4" X 3/4" for a total of 200'. They don't make it all that precise in terms of dimensions, I guess because they supply it to people who don't have precise size requirements. I ripped it all to slightly less than 3/4" and then ran it through the drum sander to get it to .140", the same size as the width of my flat top rip blade. After that, I made the spacing jigs. One for the "Square Dance" and one for the "Asa-No-Ha". I learned after the "Asa-No-Ha" that I should have made the width 1/2", so it's pretty thick. The "Square Dance" project I made from 1/2" wide pieces. It looks better with the smaller width sticks.
Thinking back, if, by jig, you mean the ones that guide the chisel when making the Kumiko pieces, yes, that took me some time. I made a double set out of some 8/4 red oak I had laying around. Kumiko was an itch I needed to scratch, and I pretty much did that with these two projects. I may do more at some point, now that my arthritic knee pain has eased up from cortisone injections and I can stand in front of the equipment. Plus, I have a bunch of remnants.
Thinking back, if, by jig, you mean the ones that guide the chisel when making the Kumiko pieces, yes, that took me some time. I made a double set out of some 8/4 red oak I had laying around. Kumiko was an itch I needed to scratch, and I pretty much did that with these two projects. I may do more at some point, now that my arthritic knee pain has eased up from cortisone injections and I can stand in front of the equipment. Plus, I have a bunch of remnants.
Steven- Random Orbital Nailer
Dark_Lightning... I've always been interested in kumiko. There's a guy on Youtube named "Pask Makes" that I watched and it was interesting.
987Ron
Interesting! Like the adjustable festure!
Thanks 987Ron! Used it today. The adjustable feature is very handy and a must.
Thanks Oldtool and Ryan!!
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