45° Router Jig Boxes

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Project by KnickKnack posted 1238 days ago 5414 views 32 times favorited 18 comments Add to Favorites Watch

I was starting to get a little frustrated at having to do everything at 90°, and, having no tiltable table saw, I decided to build a 45° router jig. I daresay it’s not unique, but I don’t recall seeing one before.
I’d originally just intended to use it for the 45° angles for drawer sides, boxes etc etc, but, in using it, I found that I could do a whole lot more!
The second box shown was the one I made first – I’d originally intended the sides to be flush and the oak to simply be splines, but, in trial fitting it, it seemed OK to have them as “extended splines”, so I went with that.
For the first box shown I tried to push the envelope out a little, and use an “extended sliding dovetail spline”. I think it came out pretty well.

The jig itself is shown in the last 2 pictures – it’s basically just a “platform” at 45 degrees – position a fence on the router table, clamp the wood to the jig, and cut. Slide the wood down, if required, and cut again. It’s shown setup for cutting the spline slots for box 2.

Both pieces are “post fumed” – the oak, of course, goes dark – the pine loses the “new wood” look, especially on what was very pink to start with, taking on a bit of a “deathly” palour, which I quite like.

As always, thoughts, comments, suggestions, bank transfers – most welcome.

-- "Do not speak – unless it improves on silence." --- "Following the rules and protecting the regulations is binding oneself without rope."

18 comments so far

View Sawdustonmyshoulder's profile


252 posts in 2252 days

#1 posted 1238 days ago

Cool joints!!!!!!

-- Makin' Sawdust!!!

View jerrells's profile


847 posts in 1509 days

#2 posted 1238 days ago

I love the 45 degree dovetail joint – UNIQUE

-- Just learning the craft my Lord and Savior Jesus Christ practiced.

View AaronK's profile


1396 posts in 2088 days

#3 posted 1238 days ago

nice boxes! i dont think ive ever seen this before. did you basically sneak up on the fit for the splines themselves?

View devann's profile


1735 posts in 1316 days

#4 posted 1238 days ago

Very cool joints, a box that looks good without a top. Thanks for pics #4 & 5 too.

-- Darrell, making more sawdust than I know what to do with

View richgreer's profile


4522 posts in 1699 days

#5 posted 1238 days ago

I though I had seen every kind of joint there is on boxes. For me, this is a new one and I really like it. I also note the quality of your workmanship.

Well done – thank you for sharing.

-- Rich, Cedar Rapids, IA - I'm a woodworker. I don't create beauty, I reveal it.

View KnickKnack's profile


971 posts in 2190 days

#6 posted 1237 days ago

Thanks to everyone for the kind comments – I never thought I’d ever see a positive comments about my joints – I usually try to design so as to avoid them!

AaronK – yes. I “roughed out” the dovetail hole with a small, straight bit, before cutting it with the dovetail. Then I “snuck up” on the fit for the dovetail spline insert

-- "Do not speak – unless it improves on silence." --- "Following the rules and protecting the regulations is binding oneself without rope."

View a1Jim's profile


112008 posts in 2201 days

#7 posted 1237 days ago

Interesting Idea well done

-- Custom furniture

View LesB's profile


1061 posts in 2067 days

#8 posted 1237 days ago

There is always more than to get the results you want. Great solution.
Something similar would would also work on a non-tilting table saw or band saw.
The set up or jig created is usually based on how often you have to do that kind of work.
There are also 45 degree router bits that would be easier to use than a jig. In fact there are angled router bits used for making joints on multi sided boxes up to 12 sides. Some even have interlocking groves or notches in them for added strength of the joint.

-- Les B, Oregon

View fernandoindia's profile


1072 posts in 1568 days

#9 posted 1237 days ago

Cool jig and perfect joint.

with Les B sugestion in the TS, there are endless joint decoration possibilities with that jig !

-- Back home. Fernando

View Wilton's profile


96 posts in 1316 days

#10 posted 1237 days ago

Great joint idea. It is unique and shows artistic ability. Thank you for sharing.

-- Wilton, Phoenixville PA

View Diggerjacks's profile


1741 posts in 1763 days

#11 posted 1237 days ago

Hello KnickKnack

A good job and a beautiful jig I love it
Simple and very effective ==> a very good jig

Thanks for sharing

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

View woodcrafter47's profile


349 posts in 1729 days

#12 posted 1237 days ago

WOW !! Now that is unique, Thanks for posting,keep up the great workings.

-- In His service ,Richard

View Toninho's profile


188 posts in 1452 days

#13 posted 1237 days ago

I liked it mainly because it is very interesting joints and you also live in Portugal! I really appreciate your work! CONGRATULATIONS

-- António Guerreiro

View bigike's profile


4031 posts in 1912 days

#14 posted 1237 days ago

very neat idea

-- Ike, Big Daddies Woodshop,

View BTKS's profile


1967 posts in 2088 days

#15 posted 1237 days ago

Unique and eye catching. I really like these joints and contrasting wood for the splines. Thanks for the post, this one is headed for favorites.

-- "Man's ingenuity has outrun his intelligence" (Joseph Wood Krutch)

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