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How To Make Circular Rings

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Forum Name: Fiberglass, Fabrication, and Interiors
Forum Discription: Fiberglass Kick Panels, Subwoofer Enclosures, Plexiglas, Fabrics, Materials, Finishes, etc.
Printed Date: May 20, 2022 at 9:31 PM

Topic: How To Make Circular Rings

Posted By: Skivah
Subject: How To Make Circular Rings
Date Posted: June 21, 2005 at 12:41 PM

How to make circular rings.  I bought a threaded steel rod, an eye bolt, and four hex nuts at Home Depot for less than ten bucks.  I attached the steel rod and eye bolt to my router, allowing the router to rotate in a circular motion.  The eye bolt is adjustable allowing you to create different size circles.  (See pictures below).

Note: these pictures were taken before I cut the rings.  But you'll get the ideal.

Router assembly with threaded steel rod and eye bolt.


Close-up view of the threaded steel rod attached to the router.  The eye bolt is adjustable to whatever radius you determine.  A hole was drilled and the eye bolt inserted in the center of the circle, allowing the router to rotate in a circular motion.  Tighten the hex nuts with a wrench before cutting your circles.  Any loose connections and your circles will be out-of-round.  Also secure your mdf boad before cutting.  I secured my mdf board by screwing it down to an old speaker box.  Place at least one screw next to the eye bolt and another outside the outer ring of your circle so the mdf board doesn't  move.  And now your ready to start cutting.  Wear safety glasses and a respirator, you'll be creating a lot of dust. 


The final result will look great.  I glued these two rings together.  The edges were smooth and the outer edges were a perfect match.


Good Luck!

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Posted By: tim828
Date Posted: June 22, 2005 at 7:01 PM
i just made mine out of a peice of 1/4 inch mdf.  i cut my rings yesterday.  but i like yours much better. 

Posted By: oonikfraleyoo
Date Posted: June 22, 2005 at 7:11 PM
Thats a pretty good idea that I haven't seen yet.

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Posted By: auex
Date Posted: June 29, 2005 at 5:31 PM
I haven't seen that one yet. I would however add 1 more bolt on each side of the eyelet just to make sure it locks. Definately looks like it works.

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Posted By: fox02yz125
Date Posted: July 06, 2005 at 4:05 PM

Hey, quick question-

What kind of router bit did you use to cut all the way through?

Posted By: Skivah
Date Posted: July 06, 2005 at 8:04 PM

Good question.

I actually had to make two cuts to cut completely through the 3/4" mdf board.  After making the first cut, I had to plunge the router down approximately 1/32" to cut completely through the mdf board.  The second cut passed through the mdf board like butter.

Thank you.

Feel the music!

Posted By: justateg
Date Posted: July 06, 2005 at 10:53 PM
Good Idea on the jig,  I used this method and It worked flawless.  If you use a plunge router and A dual fluted straight 1/4 inch bit i was able to cut all the way through in one pass.


Posted By: DukeDuke
Date Posted: July 09, 2005 at 11:09 PM
I use a 1 inch 1/8 straight bit, cuts it great

Duke Duke

Posted By: DukeDuke
Date Posted: July 09, 2005 at 11:18 PM
I made mine out of 1/2 inch MDF, it is just a 12x3 piece and it is mounted on it with a hole in the center, and bolted down to the router, then measure out from the middle of the bit to half of your hole and nail it to your MDF and go with it. I like the idea, but it seems like if you cut a circle and had to go back and cut another it would be a little off, since there isn't a certain hole to put it on. but great idea

Duke Duke

Posted By: chkur6
Date Posted: July 14, 2005 at 6:52 PM
You could just mark off where you had it set with a sharpie on each side of the nut.

Posted By: 1hot944
Date Posted: July 17, 2005 at 7:07 PM

Here's a link for the circle cutting jig

for any of you that may want to build one for yourself posted_image

In a world full of copycats, it's great to be an original!

Posted By: 383Iroc
Date Posted: July 18, 2005 at 9:02 AM


Heres one I made awhile ago. I just welded a bolt to the fence that came with the router. Works great and its easy to adjust.

Posted By: racerx22
Date Posted: July 18, 2005 at 2:28 PM
why do you use the spacer rings?

Posted By: skitty4fingers
Date Posted: July 27, 2005 at 9:20 AM
posted_imagethe Jasper circle jig is still the best for exact measurements.

Posted By: Crispix396
Date Posted: August 17, 2005 at 1:15 AM
i cut a triangel out of lexan, drilled holes to match the router screws on the bottom of the router, then measured out from there, every half inch from the router blade is 1" and drilled holes every half inch. then measured in a different direction and drilled holes every 1/2" starting on a 1/4" offset from the other holes. so i had 1/2" incriments.

then just screwed a screw into the hole that i wanted and spin the router away. it was beautiful and cost 7 bux for the plexi/lexan at home depot.

nothing amazing yet, but its coming

Posted By: JoeMetal
Date Posted: August 21, 2005 at 1:08 PM
Is there an easy way to make rings with using only a Dremel?

Posted By: carraudio
Date Posted: August 24, 2005 at 3:37 PM

This is my setup



Posted By: blazeronspokes
Date Posted: September 07, 2005 at 8:16 AM

what do you guys think is the best router for the money. i'm gonna invest in one and don't wanna get shafted in doing so.

Posted By: cxixer
Date Posted: September 24, 2005 at 11:47 PM
There are a few routers that will hold up and last. DeWalt, Porter Cable are a couple. Awesome brands that will hold up forever. But if you guy's dont want to invest the money $3-400 in jigs and routers, you can always purchase them premade -

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