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If you are going to make one box joint project and you are real careful it will work. I own an Incra I-Box and the presenter in the Youtube video is not even in the same ball park with the Incra. The Incra is so simple to set up and when I want to make a box joint all I have to do is set it on the saw table with my Frued 1/4" box blade and set the height and it is cutting time.

The presenter in the Youtube has to hold everything and hope it does not move.

As I said for a one of the jig is adequate but if you want to make multiple size (3/8, 1/4" or 1/8" inch) and set up and get perfect results then get an Incra I-Box jig.

There is no comparison between the two jigs other than they are both jigs.

Although the Youtube jig would work there are several things not said. The first one is you need a flat top cutting blade. An alternate tooth blade would not leave square bottoms on the finger cavities. The second thing is he should be using clamps to hold the work during cutting. What he does is very dangerous and I would not recommend you try his exact technique. Third his jig is relatively cheap to make but the Incra I-Box is only $150.00 and it can be used on the table saw or a router table. The Youtube jig can only be used on a table saw.

So to wrap up, if I want to make a 1/4" box joint I put the Incra I-Box on the table saw, set the 1/4" Frued Box blade to height and cut finger joints as long as I want, then the joint is repeatable and finished before this Youtube jig is even set up.
 

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Interesting, but I went with the ibox incra jig. Easy peasy, particularly with the Freud box joint blade. I agree on the clamp. I find that hand held, the darn workpiece ALWAYS moves slightly, ruining the joint.
 

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I also have an Incra Positioner (25") and you can certainly make box joints. The Incra I-Box is much simplier for box joints but the Incra Positioner is more versatile by making many different joints with box joints being one.

I like having both but if I could only have one the positioner would win.

I have made many dovetail, double dovetail and custom spaced joints with the positioner but the I-Box cannot be beat for box joints. Plus you can use the I-Box on both a router table and a table saw.

So many choices, so little money.
 

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Discussion Starter #6
If you are going to make one box joint project and you are real careful it will work. I own an Incra I-Box and the presenter in the Youtube video is not even in the same ball park with the Incra. The Incra is so simple to set up and when I want to make a box joint all I have to do is set it on the saw table with my Frued 1/4" box blade and set the height and it is cutting time.

The presenter in the Youtube has to hold everything and hope it does not move.

As I said for a one of the jig is adequate but if you want to make multiple size (3/8, 1/4" or 1/8" inch) and set up and get perfect results then get an Incra I-Box jig.

There is no comparison between the two jigs other than they are both jigs.

Although the Youtube jig would work there are several things not said. The first one is you need a flat top cutting blade. An alternate tooth blade would not leave square bottoms on the finger cavities. The second thing is he should be using clamps to hold the work during cutting. What he does is very dangerous and I would not recommend you try his exact technique. Third his jig is relatively cheap to make but the Incra I-Box is only $150.00 and it can be used on the table saw or a router table. The Youtube jig can only be used on a table saw.

So to wrap up, if I want to make a 1/4" box joint I put the Incra I-Box on the table saw, set the 1/4" Frued Box blade to height and cut finger joints as long as I want, then the joint is repeatable and finished before this Youtube jig is even set up.
Some of us are less fortunate than we who have an I-Box. Using any box joint jig will give blowout unless you have backer boards on the front and back using a router table.
 

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Very clever and the video is well done. I built one that was modeled after one in a Fine Woodworking article and it worked pretty good but was out just a tiny bit. And that is one of the problems with these type jigs is that if they are, there is no adjustment. Mine used a keyway. I suppose I could have removed the key and sanded one side and shimmed the other and it would have been perfect then. But one of the other disadvantages is that you are stuck with one size. If you are doing a smaller project that needs a smaller tooth then you need to make another jig. And the last disadvantage is that you have to match the saw blade width to the jig, as in the same thickness dado stack. If it's off a bit then you need to play with it to get it right.

The Ibox jig takes care of all of that. I was lucky enough to find one on Amazon Canada for $149 our money so I jumped on that deal.

By the way, you can use a finger joint jig for making dentil molding (or a much simplified version of the jig. It isn't nearly as fussy as making finger joints). Adding dentil molding can really add some class to certain projects.
 
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Some of us are less fortunate than we who have an I-Box. Using any box joint jig will give blowout unless you have backer boards on the front and back using a router table.
Won't say I am less fortunate, but I don't have one. On the other hand, I don't make box joints, and as of now, no plans to make any. I know if I ever do make some, I won't be making a lot of them, so it will definitely be homemade for me. Not necessarily this one, but one that works for me. No, I'm not cheap, just don't need one. However, if I ever did decide to make a lot of box joints, I kinda think I'd buy, rather than make. But, it's soo much more fun to make your own.
 
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Just to be clear I am not putting down any home made jigs. I love box joints and make a lot of them. That said the Incra I-Box is probably the best box joint jig you can buy or make. Everyone spends what they can on tools. I make a lot of jigs but sometimes I just want it to work and commercial jigs usually do just that.

If I were to play golf with Tiger Woods, I could have the most expensive clubs and give him a busted one and he would still beat me. It is about using your tools not what tools you have.

There are whole sites and channels about home made tools. Some of them are out of this world but some are just an exercise in futility. The video about this box joint jig would cause you to pull your hair out. I do not have enough hair left to pull out.

If you like making box joints I would highly recommend the Incra I-Box jig.

If you want to make a good home made jig then try:

https://www.woodmagazine.com/woodworking-tips/techniques/joinery/box-joint-jig
https://www.woodsmithplans.com/plan/box-joint-jig/
https://ibuildit.ca/projects/ultimate-box-joint-jig/

If you are going to make a homemade jig then make a good one.

Happy New year!
 
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