Box joint jig with screw advance

Plans here: http://woodgears.ca/box_joint/jig_improved.html
My innovation on the box joint jig. Instead of indexing fingers off the previous finger, this jig uses gearing and a screw to precisely position the wood for each cut on the saw. This makes setup more repeatable, speeds up opertation. and eliminates cumulative errors.

Category:

Howto & Style

Tags:

• box
• joint
• finger
• saw
• glue
• boards
• joinery

[vincent7520]

absomutely fabulous … do you have drawings that could help making the same device or do you sell it ?? where ?…

thanx ???

[Matthiaswandel]

Did you see the URL at the end of the video? Anything I could do to make it more obvious?

[MrJohnnybobs]

You're an inspiration! But looking at your plans for version 1, how is the other end of the threaded rod supported? It's not left floating, is it? Couldn't see the other end in the diagrams. And are you running the whole sled on just one slot across the table? Steady enough?

Cheers

[Matthiaswandel]

Other end of the threaded rod needs to be free.

And the sled uses just one guide bar. Made of steel, strong enough.

[RammaJamma22A]

do you use your wooden machines to build more wooden machines..and if so..how do you build your first wooden machine?

[Matthiaswandel]

Go to my website to find out

[Matthiaswandel]

If you can achieve consistent accuracy to a tenth of a thou with the method described, then you certainly don't need this. But my guess is that you haven't tried.

[Buchmagg]

Oh, my idea is to use the table saw to make gears with the 'Ordinary' box joint jig method. An axle thru the center of the blank and fixed to the sled allows rotation and then a spline of the same thickness as the saw blade is used to index the cuts, the 5' angle is built into the sled. Just now came up with this idea, I have not drawn it or made any tests of concept.

[Buchmagg]

Looking at this joint takes my mind to making gears. I'm thinking that an 'Ordinary' box joint jig method could be used to make better gears than I could make on my scroll saw (no band saw here). Making the indexing spline so that it slides in & out would speed the process quit a bit. The 5' angle should be easy to achieve. Cut one edge of all the teeth, flip the blank, cut the other edge of all the teeth, remove the waste between. I'm very interested to get your thoughts on this idea.

[pheenix42]

Clever, indeed...not too far off from what a machinist's indexing head does!

*wishes I had my shop space fixed up...*

[MrDhandley]

What planet are you from? Because here on my planet people just aren't that accurate! Simply amazing! Is this your full time job or do you just like teasing mere mortals like me in your spare time? Excellent!

[super6plx]

2:51

god that's satisfying when it fits perfectly

[gorgeousdzastr]

That's nice !

[galegregory97comcast]

that's a nice job well done

[Reddsmorris1]

Good looking joint. Thanks for sharing.

[vincent7520]

@Matthiaswandel Er… sorry for being so stupid.

Thanks a lot for your information.

Your site is fantastic : I tagged it in my favorites.

Thanks again.