Biscuit jointer spline jig

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Project by Jlane220 posted 04-11-2018 03:09 AM 1747 views 13 times favorited 18 comments Add to Favorites Watch

Simple jig for adding splines to mitered joints. Goes well with the 25 dollar biscuit jointer I picked up at an estate sale.

18 comments so far

View Steve's profile (online now)


811 posts in 816 days

#1 posted 04-11-2018 01:11 PM

That’s pretty slick. You should add a moving platform to make the spline height adjustable. ;)

View Joe's profile


495 posts in 1321 days

#2 posted 04-11-2018 01:19 PM

Those are both great ideas, the biscuit jointer and moveable platform, sounds like two smart guys. Thanks for inspiring

-- CurleyJoe, "You only learn from your mistakes"

View Julian's profile


1432 posts in 2924 days

#3 posted 04-11-2018 04:31 PM

Very clever. I like your idea.

-- Julian

View Acts65Woodworks's profile


45 posts in 776 days

#4 posted 04-11-2018 08:29 PM

nice! Just curious, what are the advantages of this setup over a table saw jig? I was planning on making a table saw jig but this looks interesting. Thanks!

-- Steven, California, ,,

View MKH's profile


53 posts in 360 days

#5 posted 04-11-2018 08:54 PM

Very clever solution.

I hope to start on a box building project in the next few weeks and this could come in handy for the boxes that I want to use spines on.

-- Marshall --------------------------- In with 10. Out with 10.

View ohtimberwolf's profile


881 posts in 2586 days

#6 posted 04-12-2018 12:27 AM

Steve, you might just add another 3/4 under the slotter and do it that way to infinity. :) larry

-- Just a barn cat, now gone to cat heaven.

View Jlane220's profile


7 posts in 289 days

#7 posted 04-12-2018 12:55 AM

I just use scrap blocks to put under the jointer to adjust height.
I don’t know that there is really any advantage over a table saw jig. Maybe someone else can answer that. The tablesaw would be more flexible for spline thickness if you use a dado setup.

View NormG's profile


6375 posts in 3238 days

#8 posted 04-12-2018 01:27 AM

Awesome idea and it just solved a problem for me

-- Norman - I never never make a mistake, I just change the design.

View Lazyman's profile


2698 posts in 1621 days

#9 posted 04-12-2018 02:12 AM

Great idea. Makes you wonder why one of the manufacturer’s didn’t make an adapter for that.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View bushmaster's profile


3416 posts in 2516 days

#10 posted 04-12-2018 03:02 AM

great idea.

-- Brian - Hazelton, British Columbia

View majuvla's profile


13580 posts in 3101 days

#11 posted 04-12-2018 01:11 PM

Very inovative, original and smart solution.

-- Ivan, Croatia, Wooddicted

View pintodeluxe's profile


5815 posts in 3047 days

#12 posted 04-12-2018 03:02 PM

Great. Looks more stable than a box held up on end at the table saw.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

View splintergroup's profile


2499 posts in 1456 days

#13 posted 04-12-2018 06:45 PM

This method has advantages over a table saw. If your biscuit joiner produces flat bottom kerfs, it is much faster and easily adapted for angled splines, plus it gives the biscuit joiner a new purpose in life 8^)

Good work!

View Woodknack's profile


12455 posts in 2614 days

#14 posted 04-13-2018 11:53 PM

Simple and straightforward, nice jig

-- Rick M,

View Noskcaj's profile


23 posts in 518 days

#15 posted 04-14-2018 01:46 PM

Man! That is a great idea. I’ve gotta make one. So much faster than a tablesaw setup. I have a couple auction biscuit joiners kicking around here too. This will put at least one of them to use. Thanks for the idea.

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