Router Planing,Thicknessing Jig

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Project by Jim88 posted 220 days ago 2524 views 35 times favorited 16 comments Add to Favorites Watch

After wasting many hours trying to sand flat my last cutting board I decided to make a planning jig for the router so I can plane large boards accurately and not invest in a larger thicknessing machine. The hardwood ply 12mm/18mm cost £20 and the planed white wood was £10 with enough left over to make an off cut shelf, so far cheaper than a 18’’ thicknesser.

I wanted to be able to move around freely with out getting caught up on clamps holding the piece in place I used some scraps as wedges to hold it firmly and put some packers in the thin areas for extra security, the cutter I chose was a 25mm dish carving cutter as I thought it would give a better finish and be more stable during use and avoid tear out on the edge and this worked well. I attached an extra piece of timber on the bottom so I can hold the whole jig still in the vice.

Once I finished my next board I couldn’t wait to check it for flatness and its perfect no rocking at all, then I measured with a calliper and it varies 0.4mm end to end which is good enough for me.

The whole jig took 1hr 30mins to make and the time this is going to save me in the future will be huge, I wish id made one years ago!

If any of you make your own design id love to see it, might be able to improve mine in the future

16 comments so far

View davidmackv's profile


305 posts in 273 days

#1 posted 220 days ago

Man, I need to make one of those. I am tired of sanding cutting boards.

View Michael Wilson's profile

Michael Wilson

587 posts in 1116 days

#2 posted 220 days ago

Yours is certainly nicer than mine.

But yeah, I’ll never make another cutting board without it.

I use stacked up 3” plywood strips for the sides of mine. A good coat of paste wax and the thing moves smooth as silk in both dimensions.

View TopamaxSurvivor's profile


14721 posts in 2301 days

#3 posted 220 days ago

Great idea ;-) Nice jig

-- "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

View Oldtool's profile


1775 posts in 816 days

#4 posted 220 days ago

Nice solution to a typical woodworker’s most dreaded task – sanding.
I made mine for face jointing boards, and it uses the workbench top as the flat reference for the router.
A large part of the fun in woodworking is creating solutions for improving the craft.

-- "I am a firm believer in the people. If given the truth, they can be depended upon to meet any national crisis. The point is to bring them the real facts." - Abraham Lincoln

View MrNorwood's profile


151 posts in 338 days

#5 posted 220 days ago

great job!

-- Remember, Jesus was a carpenter.

View Lee Leitner's profile

Lee Leitner

30 posts in 297 days

#6 posted 220 days ago

awesome jig…gotsta love jigs

-- Lee

View watermark's profile


395 posts in 568 days

#7 posted 220 days ago

Good simple solution. I tried to set something up a few months ago that was a complete failure but I think I will give something like this a shot soon. Thanks for sharing!

-- "He who has no dog, hunts with a cat" Portuguese proverb

View phlyers's profile


93 posts in 412 days

#8 posted 220 days ago

I’d love to see a video of this in action :)

View mcgyver's profile


55 posts in 496 days

#9 posted 220 days ago

i like it. I have to make some real thin stock 1/32 for the dulcimer im building. no money for the thickness sander think ill try this and see what i can do

-- Mcgyver

View woodworkingdrew's profile


159 posts in 234 days

#10 posted 220 days ago

Great jig. I will make one of these for sure.

-- Andrew, California

View deon's profile


2171 posts in 1651 days

#11 posted 220 days ago

Great jig, very simple and straightforward

-- Dreaming patterns

View arthurbvb's profile


18 posts in 302 days

#12 posted 219 days ago

Nicely made, but why won’t you use a hand plane to flatten a cutting board. I have made a lot of cutting boards and always flatten them with a jack plane. It takes me roughly 20-30 minutes to flatten a cutting board on both sides. After you have you the hand plane there is only little sanding to be done.

View BigMig's profile


257 posts in 1238 days

#13 posted 219 days ago

Thanks; yours will be a model for the one I need to build

-- Mike from Lansdowne, PA

View ms0099rg's profile


7 posts in 544 days

#14 posted 219 days ago

sweet little jig!

View Gene Howe's profile

Gene Howe

5506 posts in 2054 days

#15 posted 219 days ago

Nice jig.
I made mine so that the base plate is free to move back and forth. Yours is a better solution.

-- Gene 'The true soldier fights not because he hates what is in front of him, but because he loves what is behind him.' G. K. Chesterton

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