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Hickory Crib and GIANT Circle Cutting Jig

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Project by JoshLawson posted 05-05-2012 05:48 PM 2725 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.

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-- Josh Lawson - Ankeny, Iowa





11 comments so far

View indefatigable's profile

indefatigable

10 posts in 1253 days


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

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

View BigTiny's profile

BigTiny

1664 posts in 1632 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.

Paul

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

View JoshLawson's profile

JoshLawson

55 posts in 1748 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

Sodabowski

2081 posts in 1577 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 :)

-- Holy scrap Barkman!

View gervase's profile

gervase

11 posts in 960 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

LittlePaw

1571 posts in 1822 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

doncutlip

2832 posts in 2300 days


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

Nice work

-- Don, Royersford, PA

View Woodbridge's profile

Woodbridge

2848 posts in 1162 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

Martyroc

2708 posts in 1050 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

DocSavage45

5336 posts in 1586 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

sscartozzi

34 posts in 504 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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