Corner spline jig

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Project by sras posted 09-22-2010 05:24 PM 7856 views 36 times favorited 28 comments Add to Favorites Watch

I wanted to post my two previous jig projects so I could show you what I built this weekend!

I have been working on a box that needed splines in the corners (more on that later). I knew I needed a jig to help me cut the slots for the splines and I just felt like making a nice one.

The fun thing about this project was that I just used scrap materials and designed as I went. I had to think a bit about how to get the fence adjustment to fit.

The box has two oak ends. There are formica covered plywood side panels and cradle sides (does the formica look familiar?). These panels are positioned on plywood supports on the inside of the oak ends (see pic #2).

The assembly locks into place onto my crosscut sled using one of the pivot holes for the miter fence.

A t-slot rail on the top of the box allows me to position the fence so I can locate the slots accurately.

The box is wide enough for a 5” tall piece to be placed on either side of the blade. If I happen to need slots cut on a wider piece, I can lay a 1/2” piece of stock in each side of the cradle and extend the piece past the V-shaped opening on the left side. I can also re-position the jig along the t-slot rail on my crosscut sled.

I probably spent more time making this jig than I will using it, but I had fun and that was the point!

-- Steve - Impatience is Expensive

28 comments so far

View Ken90712's profile


15407 posts in 2037 days

#1 posted 09-22-2010 05:47 PM

Very cool, Look fwd to making one of these.

-- Ken, "Everyday above ground is a good day!"

View mafe's profile (online now)


10061 posts in 1937 days

#2 posted 09-22-2010 05:54 PM

Such a cool jig, I love the movable fence.
Best thoughts,

-- Mad F, the fanatical rhykenologist and vintage architect. Democraticwoodworking.

View Kent Shepherd's profile

Kent Shepherd

2698 posts in 2134 days

#3 posted 09-22-2010 06:11 PM

Great looking jig


-- She thought I hung the moon--now she just thinks I did it wrong

View yuri's profile


135 posts in 2451 days

#4 posted 09-22-2010 08:24 PM

Sras, very cool looking jig! I guess it works even better.

View Sodabowski's profile


2126 posts in 1681 days

#5 posted 09-22-2010 08:40 PM

Time well spent here!

-- Holy scrap Barkman!

View Chip's profile


1904 posts in 2941 days

#6 posted 09-22-2010 10:07 PM

Excellent Steve. This and the table saw sled are amazing pieces of design and engineering. Rolls Royce of jigs. Thanks for sharing them with us.

-- Better to say nothing and be thought the fool... then to speak and erase all doubt!

View Time2beupinAZ's profile


452 posts in 1810 days

#7 posted 09-22-2010 10:32 PM

very nice jig there.

-- Tim - I usally measure twice after I cut......then I know for sure that I cut it short.....

View Gary's profile


1073 posts in 3172 days

#8 posted 09-23-2010 12:24 AM

The two jigs together are quite a fantastic pair.
Thanks for sharing your ideas and demonstrating your craftsmanship.

-- Gary, Florida.

View wchips's profile


314 posts in 1936 days

#9 posted 09-23-2010 01:38 AM

great looking gig.

-- wchips

View sras's profile


4033 posts in 1977 days

#10 posted 09-23-2010 04:06 AM

Thanks for the comments – I should have mentioned that it worked great. The workpiece is held nice and stable. The spline cuts took no time at all. (one of the reasons why I probably spent more time making the jig than I will using it!)

-- Steve - Impatience is Expensive

View DocK16's profile


1155 posts in 2935 days

#11 posted 09-23-2010 04:26 AM

Here’s another great design I can steal.

-- Common sense is so rare anymore when you do see it, it looks like pure genius.

View sras's profile


4033 posts in 1977 days

#12 posted 09-23-2010 04:28 AM

Go ahead DocK – that’s why I posted it! Immitation is flattery.

-- Steve - Impatience is Expensive

View Greg..the Cajun Wood Artist's profile

Greg..the Cajun Wood Artist

5493 posts in 2157 days

#13 posted 09-23-2010 05:36 AM

Very nice jig Steve. A jig that is also a piece of artwork as well as very functional.

-- Each step of every Wood Art project I design and build is considered my masterpieceā€¦ because I want the finished product to reflect the quality and creativeness of my work

View Gerald Miller's profile

Gerald Miller

50 posts in 2800 days

#14 posted 09-29-2010 01:30 PM

Way nice and makes my very basic jig look …..well very basic.

-- Jerry Miller

View Eric in Central Florida.'s profile

Eric in Central Florida.

3696 posts in 2424 days

#15 posted 10-01-2010 06:54 PM

Steve, this jig looks nicer then most of my projects.
Thanks for sharing it.
Very nice work!

-- Retirement suits me fine !

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