Hickory Crib and GIANT Circle Cutting Jig

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Project by JoshLawson posted 05-05-2012 05:48 PM 3655 views 2 times favorited 11 comments Add to Favorites Watch

Here’s a crib I made a couple of years ago, it’s very similar to two other cribs that I’ve made. I don’t particularly like working with Hickory, but it looks pretty good so long as you are going for wild color changes.
One thing I thought you fellow LumberJocks might be interested in is the Jig I made to cut giant circles (16’ diameter)

It’s a pretty simple jig, I had one of my friends CNC some 1/2” polycarbonate base plates for the router end and the pin (which sets the center of the circle). Then I connected the two pieces with some T-Nuts and an 8’ piece of 80/20 extruded aluminum T-Slot stock. The beauty of the 80/20 is that it provide an infinitely adjustable radius.

I’ve used it on a number of projects and it really is a great jig to have around. With a good solid carbide spiral bit, it cuts perfect arcs, every time. I just do a quick touch up with sandpaper and it’s good to go.









-- Josh Lawson - Ankeny, Iowa

11 comments so far

View indefatigable's profile


10 posts in 1758 days

#1 posted 05-05-2012 06:38 PM

Nice! I really like the smooth curves. Good job!

View BigTiny's profile


1667 posts in 2136 days

#2 posted 05-05-2012 07:09 PM

Nice jig, but I’d worry about the pin coming out since it doesn’t seem to be secured. I’d have used some sort of lock on the pin.


-- The nicer the nice, the higher the price!

View JoshLawson's profile


64 posts in 2253 days

#3 posted 05-05-2012 07:13 PM

The Pin really hasn’t been much of a concern at all, it’s buried about an inch deep in an interference fit hole in the wood (really snug) and the in the polycarbonate is also really tight. The biggest thing going for it, is there really isn’t any non-shear forces in the setup.
That said, I’m sure it wouldn’t hurt, it’s just not really necessary.

-- Josh Lawson - Ankeny, Iowa

View Sodabowski's profile


2293 posts in 2081 days

#4 posted 05-05-2012 07:26 PM

Whoa, so when are you building that giant 16’ round table for King Arthur and his doods? ;) Nice crib :)

-- Thomas - Pondering the inclusion of woodworking into physics and chemistry classes...

View gervase's profile


11 posts in 1465 days

#5 posted 05-05-2012 07:53 PM

I so like this jig & it’s simple construction. I have made arcs before & used an MDF contraption I’ve made in a hurry. It worked but this looks like a treasure & I need one as I have a project I am about to start. You lead the way…
BTW the cribs look ace as well

-- Gervase..... keep your wood as long as you can as long as you can

View LittlePaw's profile


1571 posts in 2326 days

#6 posted 05-06-2012 01:09 AM

Great jig. I love it!

-- LittlePAW - The sweetest sound in my shop, next to Mozart, is what a hand plane makes slicing a ribbon.

View doncutlip's profile


2832 posts in 2804 days

#7 posted 05-06-2012 01:55 PM

Nice work

-- Don, Royersford, PA

View Woodbridge's profile


3400 posts in 1666 days

#8 posted 05-06-2012 03:32 PM

Nice crib and a pretty serious looking and large circle cutting jig! You have also got a pretty good looking workbench.

-- Peter, Woodbridge, Ontario

View Martyroc's profile


2711 posts in 1554 days

#9 posted 05-07-2012 10:47 PM

The crib looks great, i like the color variation. That’s a serious circle cutting jig :)

-- Martin ....always count the number of fingers you have before, and after using the saw.

View DocSavage45's profile


7295 posts in 2091 days

#10 posted 05-27-2012 05:15 PM

Damn, fits on that bench! Two good ideas, but no space for such a long bench to get the arc. Thanks for sharing

-- Cau Haus Designs, Thomas J. Tieffenbacher

View sscartozzi's profile


53 posts in 1008 days

#11 posted 09-15-2013 12:57 AM

Nice job. I’m also envious of the size of you work bench.

-- Steve, Malvern, PA

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