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the12volt`s installbay - Mobile Electronics Forums the12volt's install bay / Fiberglass, Fabrication, and Interiors

Subject Topic: How to make circular rings (Topic Closed Topic Closed)

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Skivah
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Posted: June 21, 2005 at 12:41 PM - IP Logged  

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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tim828
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Posted: June 22, 2005 at 7:01 PM - IP Logged  

i just made mine out of a peice of 1/4 inch mdf.  i cut my rings yesterday.  but i like yours much better. 
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oonikfraleyoo
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Posted: June 22, 2005 at 7:11 PM - IP Logged  

Thats a pretty good idea that I haven't seen yet.
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Posted: June 29, 2005 at 5:31 PM - IP Logged  

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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fox02yz125
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Posted: July 06, 2005 at 4:05 PM - IP Logged  

Hey, quick question-

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

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Skivah
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Posted: July 06, 2005 at 8:04 PM - IP Logged  

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.


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justateg
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Posted: July 06, 2005 at 10:53 PM - IP Logged  

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.
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DukeDuke
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Posted: July 09, 2005 at 11:09 PM - IP Logged  

I use a 1 inch 1/8 straight bit, cuts it great
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DukeDuke
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Posted: July 09, 2005 at 11:18 PM - IP Logged  

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
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chkur6
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Posted: July 14, 2005 at 6:52 PM - IP Logged  

You could just mark off where you had it set with a sharpie on each side of the nut.
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