Building A High Quality Circle Jig - Router Forums
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post #1 of 53 (permalink) Old 05-08-2011, 08:22 PM Thread Starter
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Default Building A High Quality Circle Jig

After looking at a number of circle jigs from store bought to plans to build a circle jig I decided I could not buy a circle jig that was of quality so I decided to build my own and with that have a solidly built circle jig that’s on a bearing not a nail or pin in a hole. I had been using a piece of Lexan using a nail to make my cuts. Made of Stainless Steel and 1/2" Nylon. The jig is not finished but here is a peek as to how it will be built. The center pivot can be screwed or use carpet tape to achor the center pivot.


















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post #2 of 53 (permalink) Old 05-08-2011, 09:38 PM
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Looks like a good idea and it will prolly work better than any store bought

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post #3 of 53 (permalink) Old 05-08-2011, 11:53 PM
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very cool it is alot like this system...
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I saw it at the wood working show and really liked everything about it but the price I thought it was WAY to expensive for what it was but a lot of things are like that now days..

I like you approch and cannot wait to see it in action as I have to cut some 12 inch circles pretty soon and was debating doing it with the router or the bandsaw with a circle jig
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post #4 of 53 (permalink) Old 05-09-2011, 03:31 AM
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It'll work, but it's not the correct bearing for that application. A small flanged bearing would be better suited, but, it's up to you. What vertical forces are you trying to minimize at the pivot point that would necessitate a thrust bearing ??? Your accuracy is still determined by the fit between the pivot pin and the pieces that it pins together.
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post #5 of 53 (permalink) Old 05-09-2011, 07:01 AM Thread Starter
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Originally Posted by Bob WIngard View Post
It'll work, but it's not the correct bearing for that application. A small flanged bearing would be better suited, but, it's up to you. What vertical forces are you trying to minimize at the pivot point that would necessitate a thrust bearing ??? Your accuracy is still determined by the fit between the pivot pin and the pieces that it pins together.
Bob, I agree with you... I just had the thrust bearing on hand. I had ordered a flange bearing on Friday from McMaster Carr. Should be here today...
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post #6 of 53 (permalink) Old 05-09-2011, 09:20 AM
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bob, i agree with you... I just had the thrust bearing on hand. I had ordered a flange bearing on friday from mcmaster carr. Should be here today...
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post #7 of 53 (permalink) Old 05-09-2011, 11:29 AM
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I agree with Harry. This is a low speed/low force condition so I don't really see any advantage to a bearing. Low friction plastic should work just fine, and there is nothing to gum up.
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post #8 of 53 (permalink) Old 05-09-2011, 05:14 PM
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kiss!
What is the smallest circle you could cut with that jig? I'm trying to figure out how to make a jig to cut 6" holes. To you set the pivot point under the bottom of the router, so you can cut a radius of 3" which is probably shorter than the width/length of the router. Hope this makes sense and go easy on me, just getting in to woodworking and doing some basic projects.
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post #9 of 53 (permalink) Old 05-09-2011, 06:05 PM
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10/10 Harry.....looks good, but is it practical?...........AL
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post #10 of 53 (permalink) Old 05-09-2011, 10:55 PM
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10/10 Harry.....looks good, but is it practical?...........AL
Hush your mouth, Al.

Are you trying to stir him up???????.

Of course it is practical, even I can make one and use it....
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