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Old Jan 27, 2014, 09:09 PM
Registered User
Brawley, CA. USA
Joined May 2000
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Circle cutter for covering

I need to make a circle cutter for covering. I would like to use Exacto blade for the cutter and be to able to cut up to 12" circles. Need to be able to replace the blades when dull. Anyone made one or any ideas?

Thanks in advance,

Bill
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Old Jan 27, 2014, 09:53 PM
Registered User
Canada
Joined Nov 2000
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Really? Just google for an amazing variety of circle cutters... And prices.
Beyond that.... for a single use gizmo ? even a ruler, a pin, an Exacto knife and some masking tape will be All you need to cobble one up.
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Old Jan 27, 2014, 11:19 PM
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Brawley, CA. USA
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Don't want to "cobble" one up, no offense meant, but adjustable one that I could use for years to come, hopefully. As for buying one, the Olfa circle cutters use a wheel and, unless I spend $50, are to small anyway. Also, I don't think the wheel will cut through the backing and then the film of Ultracote as I do my layout on the backing. Haven't found a pen yet that will finely mark the covering without smudging when moving my straight edge or leaving an indelible mark.

Just wondering if anyone had built one or had a decent idea for one.

Bill
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Old Jan 28, 2014, 08:55 AM
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United States, NJ, Browns Mills
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I have one of the Olfa ones that I've been using for a few years. As long as you firmly tape the covering in place, it does a fine job. The latest model I did with it has French roundels, about 5" in diameter, that I did with the cutter with no problems (despite the backing still being on the Ultracote).

I regularly use my wife's old Olfa cutter and board for covering materials. The wheels don't dull or snag as quickly as X-acto blades.

CD
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Old Jan 28, 2014, 09:26 AM
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LesUyeda's Avatar
San Diego, California
Joined Dec 2004
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Too many links to post, but Google Olfa CMP-1.

Bought one years ago and love it.

Les
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Old Jan 28, 2014, 09:33 AM
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Aurora Municipal, Illinois, United States
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I looked for years for a reasonable way to cut circles in covering. I have quite collection of stuff in my tool box that I have purchased over the years including a homemade beam compass that probably worked the best.

I don't know if this will help you but the best solution I've come up with is a drafting compass. I have an old drafting kit with 2 sizes of compass and a long beam extension that allowed me to cut some large circles for a prewar star and ball insignia. The cutter itself is a blade I purchased online for a vinyl cutting plotter. I replaced the pencil lead with the cutter and it cuts beautiful circles. The cutter is solid carbide, extremely sharp and will probably outlast my covering career.
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Old Jan 28, 2014, 09:34 AM
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Albuquerque, NM USA
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I have an Olfa too. Got it at a sewing shop.

But, I made one when a kid. Used a yardstick. In those days they were about 3/8" thick and I screwed the blade to the end. Then cobbled up a sliding part. 1/16 ply and some bass or spruce. Thumbscrew in the top. The pivot point was a nail that had the point dressed up. I cut it off to about 15" long, but, the same thing could be done in any size you want.
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Old Jan 28, 2014, 09:49 AM
An itch?. Scratch build.
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South Wales U.K.
Joined Mar 2003
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Actually I found it quite easy with a blade and something to cut round.

A plate, bowl, cup, or whatever was the right size. The plate or whatever, kept the film pressed down while I cut round it with a scalpel.

Though I do also have a craft circle cutter, I found cutting round something still easier.
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Old Jan 28, 2014, 03:10 PM
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United States, NJ, Browns Mills
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Correction, the Olfa cutter I have will do up to 8" circles.

The Morane's roundels are 6", not 5", too.

CD
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Old Jan 28, 2014, 05:58 PM
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Canada
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Ohhh .. you want a reusable one ... for Cheap ?
A decent quality poster board Ali Push pin with a Sharp 1/2" + pin shaft.
A length of Twine and an Exacto handle with a fresh #11 blade
Pin at the centre of the circle, firmly pressed home..knotted string loop onto the pin's head, the other end of String taped to the Exacto handle. and subsequently wound on it a few turns.
Wind or Unwind the string on the exacto handle for desired radius.
When done wrap it all together until the next use.
Easy, Reliable , reusable and instantly available,, not to mention Free.
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Old Jan 28, 2014, 10:23 PM
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Surprise, AZ
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Olfa CMP-3 will cut 8 3/4" for about $17 @ Walmart.
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Old Jan 29, 2014, 02:39 PM
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I have two aluminum things which clamp on an aluminum yardstick. One holds a blade and the other one has a point on it. No idea where I got them.
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Old Jan 29, 2014, 04:55 PM
Jim C Patrick
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Shenandoah County
Joined Jan 2008
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If you can find (or have) a large drafting compass or a beam compass the Roland 'plotter' blades for vinyl can work. Get the low angle (30) types because XXcotes are thin and don't need the steeper 60 edges. Use them in place of the graphite.

If you cut on glass like many people here, just be careful because the carbide can cut into the glass and scar it if you use too much pressure.
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Old Feb 18, 2014, 06:48 PM
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Brawley, CA. USA
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Bare,

Have you tried your string idea yet. Need at least three hands.

eflighttray,

You and my wife had the same idea. She also told me Olfa made a 1 inch wheel for cutting ( have to wait for her to be out of the house to borrow it ). I'm going to try the small wheel and an Exacto blade around some Dollar Tree plates. My wife thinks I might break HER plates by pressing down to hard. And I won't break the Dollar Tree plates, right. After all they go for the princely sum of,....... wait for it,.... a dollar.

Capt. D, I'll have to see if Wally World has one although Jo Ann's just opened a store in the next town that we jokingly call the "big city". (Pop <40K).

Jim T, Have a photo.

jcpatrick, I use a 18" x 24"sewing cutting mat that my wife was going to throw away.

Yup, I am master of my domain (the garage, well part of it anyway ).

Bill
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Last edited by Wild Bill; Mar 05, 2014 at 11:56 AM. Reason: Had the time
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Old Feb 18, 2014, 07:13 PM
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United States, KS, Rose Hill
Joined Sep 2007
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You might also want to look at what Micro-Mark has.

L.
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