I had the need this afternoon for a way to cut a curved groove for a veneer inlay. It needed to be absolutely accurate and easy enough that even I couldn’t screw it up. A half hour later I had this little jig. I thought someone else may find it useful.
The first photos are self explanatory and show the simple construction and assembly of the base and pivot arm. The featured performer is one of my personal favourite Harbour Freight tools, the trim router.


In the next photo the base has been cut off at the 6 1/2” radius that I require for this job. This is the only critical measurement here and it can be made with a regular tape measure. The accuracy lies elsewhere.
As you can see, I like to do cutoffs over foam insulation.

This one shows the obvious, that is that the cut in the base is exactly where the cut will be in any piece the base is clamped to.
Here I’m making a trial cut in a piece of plywood to check depth of cut to match my veneer thickness.

Here’s the obvious again. I love it when these things are this obvious. It makes it much harder (although not impossible) to screw up in a moment’s lack of focus. The inner cut radius is exactly where the edge of the base is.

Now the depth of cut has been adjusted and exactly matches the veneer thickness.
And finally, here’s why this has to be so precise. There’s just no room for error here. Even so, I will be making this cut in the morning with a clear head and I’ll be thinking it through very carefully before any routers get turned on.
There are lots of bells and whistles that could be added to this but all I needed was a one time non-adjustable, deadly accurate, deadly obvious jig that I could make, use and chuck. That’s the way I usually think about jigs in general.
Thanks for looking. I hope this helps someone somewhere.
Paul
-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fiberglass trees. http://prmdesigns.com/

















24 comments so far
a1Jim
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88945 posts in 1773 days
#1 posted 363 days ago
hey Paul
These kind of Jigs are great good job .Thanks for sharing.
-- W James Brokenbourgh Custom furniture maker http://artisticwoodstudio.com/
rustynails
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362 posts in 724 days
#2 posted 363 days ago
How are you getting the piece of veneer to fit in the grove? As in width wise and arc? I am guessing you are using the jig with a knife to cut the veneer?
Thanks Richard
shipwright
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3473 posts in 993 days
#3 posted 363 days ago
The veneer arc is cut on the chevalet.
-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fiberglass trees. http://prmdesigns.com/
Mathew Nedeljko
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470 posts in 2025 days
#4 posted 363 days ago
love it Paul…one time use and chuck. Seems like the only way to screw it up would be to go past your starting and finish point. Maybe think about adding some stops to limit the rotation to exactly what you need?
-- You either think you can, or think you can't. Either way you are right. Henry Ford
gfadvm
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6905 posts in 886 days
#5 posted 363 days ago
A great jig but the project in progress is amazing! Can’t wait to see it finished.
-- " I'll try to be nicer, if you'll try to be smarter" gfadvm
peteg
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2321 posts in 1018 days
#6 posted 363 days ago
Aaaaahhhh the thinkin man is at it again,
Paul you make it look like these crafty aids just simply fall of the bench no sweat, .... yer right
Bet there are a few copies made of this one :: )))
Pete
-- Pete G: If you always do what you always did you'll always get what you always got
lightweightladylefty
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2084 posts in 1908 days
#7 posted 363 days ago
Paul,
We love your solution! It seems I spend more time making jigs than the actual cuts! Our next project is to build a 50,000-square-foot warehouse to store all the jigs. After that we’ll need to hire staff to keep them documented so we can find them when we need them.
Oh, wait, maybe we should just chuck them and not build the warehouse or hire the staff!
L/W
-- Jesus is the ONLY reason for ANY season.
rustynails
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362 posts in 724 days
#8 posted 363 days ago
The veneer arc is cut on the chevalet
Thanks Paul
Douglas Bordner
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3907 posts in 2259 days
#9 posted 362 days ago
Pucker factor of 12 on that cut. Very ingenious, and I can absolutely see a HF trimmer in my future for dedicated jigging. Thank you for sharing this.
-- "Bordnerizing" perfectly good lumber for over a decade.
Bluepine38
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2160 posts in 1281 days
#10 posted 362 days ago
Wonderful jig and easy to make and use, now if I could just manage to make the beautiful project you are
using it on, I would really be happy. Thank you for sharing.
-- As ever, Gus-the 74 yr young apprentice carpenter
SPalm
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4174 posts in 2078 days
#11 posted 362 days ago
Nice work Paul.
HF trimmer – I need to check that out.
Routing over foam board – Love it.
What you are really working on – My gosh….
Steve
-- -- I'm no rocket surgeon
eddie
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4742 posts in 809 days
#12 posted 362 days ago
shipwright very cleaver jig , could be used for many more things ,thanks for sharing and the project in progress its looks to be a beauty.
-- Jesus Is Alright with me
helluvawreck
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10889 posts in 1062 days
#13 posted 362 days ago
You sure do nice work, Paul. That’s a nice jig too.
helluvawreck
https://woodworkingexpo.wordpress.com
-- If a man does not keep pace with his companions, perhaps it is because he hears a different drummer. Let him step to the music which he hears, however measured or far away. Henry David Thoreau
mafe
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8081 posts in 1285 days
#14 posted 362 days ago
Clever simple jig, with a precut side that gives you exact place to set it.
Keep the head clean.
Best thoughts,
Mads
-- Mad F, the fanatical rhykenologist and vintage architect. Democraticwoodworking.
DocSavage45
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3016 posts in 1038 days
#15 posted 362 days ago
when you do it it seems so simple. LOL!
-- Cau Haus Designs, Thomas J. Tieffenbacher
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