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Adjustable Finger Joint Jig

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Project by horky posted 05-19-2014 12:33 PM 7266 views 33 times favorited 16 comments Add to Favorites Watch

MDF, hardboard, t-track. First set of fingers are 1/2” wide. Pictures show the first to cuts. Went together with slight mallet wraps. Had a little chip out on the very first cut .. need to score the cut line on the edges of the boards. Now I will make some 5/8”, 3/4”, 7/8” and 1” fingers. That should allow me to have lots of options.





16 comments so far

View A.Scott's profile

A.Scott

230 posts in 2033 days


#1 posted 05-19-2014 01:15 PM

Nice, I think I need to copy you on this jig.

View woodchuckerNJ's profile

woodchuckerNJ

1282 posts in 1691 days


#2 posted 05-19-2014 02:31 PM

Great idea…

-- Jeff NJ

View a1Jim's profile

a1Jim

117160 posts in 3634 days


#3 posted 05-19-2014 02:55 PM

A very ingenious approach to box joints,nice work.

-- https://www.artisticwoodstudio.com/videos wood crafting & woodworking classes

View MShort's profile

MShort

1791 posts in 3475 days


#4 posted 05-19-2014 03:53 PM

Nice Jig !!!

-- Mike, Missouri --- “A positive life can not happen with a negative mind.” ---

View majuvla's profile

majuvla

12584 posts in 2924 days


#5 posted 05-19-2014 04:02 PM

So simple , but efficient.

-- Ivan, Croatia, Wooddicted

View kaerlighedsbamsen's profile

kaerlighedsbamsen

1248 posts in 1770 days


#6 posted 05-19-2014 04:32 PM

Looks great!
I dont quite see how you use it. Would love to see it in action somehow!
Thanks for sharing.

-- "Do or Do not. There is no try." - Yoda

View Diggerjacks's profile

Diggerjacks

2263 posts in 3195 days


#7 posted 05-19-2014 05:30 PM

Hello horky

Very nice jig for a very good result

Do you have a video ?

Thanks for sharing

-- Diggerjack-France ---The only limit is the limit of the mind and the mind has no limit

View steve_in_ohio's profile

steve_in_ohio

1195 posts in 1667 days


#8 posted 05-19-2014 05:45 PM

great job, looks like a very handy jig

-- steve, simple and effective woodworking---etsy.com/shop/SussmanWoodworking--

View David's profile

David

203 posts in 3772 days


#9 posted 05-20-2014 02:23 AM

Is this a variation on the one I saw in Woodsmith some time ago ? Slick

-- Islandwoodworker@Gmail.com

View stefang's profile

stefang

15881 posts in 3391 days


#10 posted 05-20-2014 12:49 PM

It looks easy to set up and easy to use. It doesn’t get better than that.

-- Mike, an American living in Norway.

View horky's profile

horky

240 posts in 2987 days


#11 posted 05-20-2014 12:59 PM

All, thanks for the comments. Sorry, no videos but maybe this series of pics will help.

Take the end cap off, both ends come off:

insert the fingers into the t-track, as many as you like, for sure extras to help balance the router:

reinstall end cap, clamp fingers together, tighten the finger fasteners:

install the wood under the fingers and tight to the end cap, clamp:

cut away with a pattern bit, top bearing, using fingers as guides

you can see the hardboard backer is removable and sacrificial. I made several:

and that gives you the finger joints shown in the top of the thread. Putting multiple fingers in a row, offset in the same direction, allows for wider fingers/slots, so it it quite variable.

Hope this helps. Thanks again.

View Diggerjacks's profile

Diggerjacks

2263 posts in 3195 days


#12 posted 05-20-2014 04:55 PM

Hello

Thanks for all the pictures

Now I understand the process

Thanks

-- Diggerjack-France ---The only limit is the limit of the mind and the mind has no limit

View Gary's profile

Gary

1300 posts in 4381 days


#13 posted 05-20-2014 05:09 PM

Great idea; lots of possibilities.

-- Gary, Florida

View kaerlighedsbamsen's profile

kaerlighedsbamsen

1248 posts in 1770 days


#14 posted 05-20-2014 08:20 PM

Thansk for claifying- now i get it. Realy clewer pieze of gear you made there. Might want to do something similar..

-- "Do or Do not. There is no try." - Yoda

View Brett Gallmeyer's profile

Brett Gallmeyer

39 posts in 2923 days


#15 posted 05-21-2014 08:34 PM

Where did you get the plans for this? I’ve seen this somewhere else, but I can’t remember where….

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