LumberJocks

Easy box or finger joint jig

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Project by TheFridge posted 02-02-2015 05:43 AM 3545 views 33 times favorited 16 comments Add to Favorites Watch
Easy box or finger joint jig
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First, I need to thank William Ng for coming up with this awesome idea.

http://youtu.be/NutwD7B6tmE

Instead of clamping the jig to your dado sled, I decided to make a small dedicated sled for this one purpose of cutting 3/8” box joints with no setup necessary aside from putting the dado blades and a chipper and shims that I’ve premarked. I can be ready to cut joints in the time it takes to put the dado stack on. It’s great.

Thanks again William. You are pure awesome.

Pics of the jig. Pretty small. Ready to go.

Just a couple things I’ve made with it while testing it out.

If the work piece is longer than 8”, I cut the mating parts at the same time so the error over a long length doesn’t matter. Learned that the hard way on my hybrid vise. I’ve had to use paint stirring sticks to prevent tear out after cutting joints as tall as I could make them in the beginning. 1/4” ply would work too. It’s definitley opened up the possibilities of what I can do to add form and function to a project.

Thanks for looking.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.





16 comments so far

View CincyRW's profile

CincyRW

156 posts in 1113 days


#1 posted 02-02-2015 01:41 PM

This is a great (ie, “simple”) jig. I’ve been tinkering with box joints for a while. I’ll be adding thsi to my favorites so I can make this jig for myself in the future – Thanks!

View TheFridge's profile

TheFridge

5765 posts in 949 days


#2 posted 02-02-2015 01:52 PM

Thanks man. I haven’t had much success with box joints, short of building a screw advance box joint jig, until this. It’s been awesome.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View waho6o9's profile

waho6o9

7172 posts in 2040 days


#3 posted 02-02-2015 02:10 PM

Great looking box joints Fridge!

View TheFridge's profile

TheFridge

5765 posts in 949 days


#4 posted 02-02-2015 02:16 PM

Thanks man. I have William to thank for that also. Dude is awesome.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View Matt's profile

Matt

6 posts in 936 days


#5 posted 02-02-2015 06:39 PM

Nicely done. I think I tried something similar once, but my level of precision building the jig didn’t work out well. Maybe I will try it again with a little more care

View TheFridge's profile

TheFridge

5765 posts in 949 days


#6 posted 02-02-2015 06:41 PM

Thanks. A good set of calipers is would be a great asset, but I think you can get it right through trial and error. I say give it another shot bud.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View SCOTSMAN's profile

SCOTSMAN

5839 posts in 3048 days


#7 posted 02-02-2015 10:04 PM

Well done young sir.I see you use a dado.These are simply not allowed in European Union.I intend to make box jpints when I finish my router table.Can it realistically be done with a single blade on a ts ? Alistair

-- excuse my typing as I have a form of parkinsons disease

View TheFridge's profile

TheFridge

5765 posts in 949 days


#8 posted 02-02-2015 10:08 PM

Thanks you sir. I’m sure you can, but I’ll have to try it tonight to see if I can figure out an easy process.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View weekend_warrior's profile

weekend_warrior

9 posts in 1328 days


#9 posted 02-02-2015 10:10 PM

Why are Dado stacks not allowed? Safety thing? You can do draw it out and use a jig saw or a band saw, but that would take a bit longer.

View TheFridge's profile

TheFridge

5765 posts in 949 days


#10 posted 02-02-2015 10:24 PM

Really easy to do finger joints the width of you blade. Anything more than that and I don’t think it’ll work because you’ll have to move the the indexing finger. I’ll see what I come up with though.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View SCOTSMAN's profile

SCOTSMAN

5839 posts in 3048 days


#11 posted 02-03-2015 12:22 AM

They are banned because to use them you need to remove the riving knife.It is only an effective legally binding ban if you allow employees to use it, as the current ban is implemented. However there is no law in buying a saw to accept dadoes for personal use.So if no one but the owner wants or is allowed to use it thats legally acceptable. The problem is they deliberately make the arbours too short to take a dado head. So Unless you import a machine from say The USA which would be economically unjustifiable you then need as I have done in the past to a router table.I bought some really nice parts fence hold downs etc to do this but health problems slow any progress in that direction null and void SO FAR lol Alistair

-- excuse my typing as I have a form of parkinsons disease

View TheFridge's profile

TheFridge

5765 posts in 949 days


#12 posted 02-03-2015 12:24 AM

You could adapt this jig for a router table if it has a miter slot. Does yours?

Edit: and you would have to be able to remove the fence.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View SCOTSMAN's profile

SCOTSMAN

5839 posts in 3048 days


#13 posted 02-03-2015 12:26 AM

Yes I agree MR fridgey it looks to be impossible with a single blade.Alistair

-- excuse my typing as I have a form of parkinsons disease

View TheFridge's profile

TheFridge

5765 posts in 949 days


#14 posted 02-03-2015 12:31 AM

You could do fingers the width of the blade. I think the router table jig would be the way to go for you bud. The only difference between mine and one for a router table is having only one runner instead of 2. And maybe depth of cut. I would suggest watching William ng’s YouTube video. He explains it really well.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View ScottKaye's profile

ScottKaye

471 posts in 1416 days


#15 posted 02-07-2015 04:52 PM

did you use William Ng’s 5 cut method to square the fence to the sled? Or does this jig not need that level of precision since your pieces are relatively thin in width. In other words, would squaring it with square suffice?

-- "Nothing happens until you build it"

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