Spline Cutting Jig

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Project by Triman posted 01-12-2009 07:35 PM 5524 views 21 times favorited 11 comments Add to Favorites Watch

I made a few boxes last year and got hooked. However, the spline cutting was somewhat tedious. So, I finally broke down and built this jig. Since then, I cut spline slots in about 20 boxes, with 2 to 5 slots per corner. I’m still figuring out how to more precisely place the slot, (especially when cutting at an angle and placing multiple slots), but I’m getting better as I go….I hope. The jig definitely removes a number of variables.

-- Bruce, San Jose, Ca

11 comments so far

View HokieMojo's profile


2104 posts in 3722 days

#1 posted 01-12-2009 08:01 PM

looks good. also looksl ike something similar could be used to do dovetail splines on a router table.

View Quentin's profile


47 posts in 4140 days

#2 posted 01-12-2009 09:51 PM

I love the idea of putting a stop block on a t-track, I think I’m going to remake my spline jig the same way! Thanks for the idea.

View Russel's profile


2199 posts in 3933 days

#3 posted 01-12-2009 10:28 PM

Nicely designed jig. I’m going to have replace mine with something like yours.

-- Working at Woodworking

View jim1953's profile


2735 posts in 3836 days

#4 posted 01-13-2009 05:46 AM

Nice Jig

-- Jim, Kentucky

View Dusty56's profile


11819 posts in 3682 days

#5 posted 01-13-2009 08:18 AM

Looks GREAT…I think Charlie was looking for an upgrade to his latest jig ….Thanks for posting : )

-- I'm absolutely positive that I couldn't be more uncertain!

View Chris's profile


339 posts in 3351 days

#6 posted 03-19-2009 03:39 AM

Looks great. Two things you’ve done better than mine: the stop block and using both slots on the table.

-- Chris

View Triman's profile


50 posts in 3576 days

#7 posted 03-20-2009 07:17 PM

Yes, using both slots helps to keep it moving smoothly without any binding.

The stop was added later. I was using a chunk of wood and a spring clamp. I got tired of messing with it, so out of laziness, I added the t-track and stop block. Much quicker and accurate!

-- Bruce, San Jose, Ca

View nmkidd's profile


758 posts in 3167 days

#8 posted 11-16-2009 10:10 PM

Looks very useful…..simple construction…..even a I (the guy with all thumbs) could build and use it.
Good job.

-- Doug, New Mexico.......the only stupid question is one that is never asked!........don't fix it, if it ain't broke!

View hasbeen99's profile


183 posts in 3533 days

#9 posted 11-17-2009 09:19 PM

“I love the idea of putting a stop block on a t-track, I think I’m going to remake my spline jig the same way! Thanks for the idea.”

What Quentin said! Nice one!

-- "The only thing that counts is faith, expressing itself in love." --Galatians 5:6

View SNSpencer's profile


133 posts in 3107 days

#10 posted 12-08-2009 01:13 AM

Looks like I will have to take some pictures of my feather key jig, very much like yours except I installed a “no finger” barrier/cover. There is no way to accidently forget where the saw blade exits the jig on the backside and cause an accident. Even if you do, the area where the blade runs is completely enclosed. Only one suggestion for your jig. Install a “stability” strip on the topside, very front edge. Something taller than your max cut height. That way you have a “bridge” to keep the jig from warping/twisting on the front (new strip) and the back (your existing cradle).

-- Jef Spencer - Refined Pallet -

View Triman's profile


50 posts in 3576 days

#11 posted 12-08-2009 01:21 AM

Thanks Jef, that’s a good idea. I need to do the same thing to my crosscut sled. Since I do a lot of 0 degree to 90 degree cuts, I now have a gaping hole at the far end, and eventually, it may break thru, and there would go my stability and alignment!

-- Bruce, San Jose, Ca

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