Cutting circular openings

by brae  

I recently picked up a new attachment for my Dremel rotary tool: a circle cutter and straight edge guide.  In this post, I'll show you its circle cutting capabilities.  This makes circles from 3/4" to 12" in diameter.

I'm using scrap pieces of 1/4" plywood here to get a feel for the tool the first time around.  I've marked my outer circle and the center point.

I loosened the guide and adjusted the cutting bit to fit the circle.

The attachment has a pin that is 1/8" in diameter.   I drilled a hole on the center point using the same sized drill bit.  You also use the same sized cutting bit, so a hole is needed for the bit as well.

You slip the pin into the center hole and then cut around the circle with the cutting bit.

This is my fourth practice run, and I've managed a reasonably clean circular opening.  Just a little sanding to fine tune it is needed.  Hooray!  :D

It was not easy (and it's very loud), but I am sure with practice (and earplugs) it will get better.  And, you're left with a better opening than you could achieve with a scroll saw or hand tools.


Comment from: Debora [Visitor]
Thanks for the step by step photos! I always wondered how to do this :D
09/27/14 @ 12:12
Comment from: Blondie [Visitor]
Fantastic!! It's amazing how loud wood cutting can be. Now I know why all of the men in my extended family need hearing aids from years of working on the farm. Get some good protection for your ears! :)
09/27/14 @ 15:15
Comment from: April [Visitor]
Ohhh ahhh, such a perfect circle :D Santa might have to grab this one for my stocking :)
09/27/14 @ 16:36
Comment from: grandmommy [Visitor]
I am just beginning to feel comfortable with these kinds of tools. Thanks for sharing what is possible. :-)
09/27/14 @ 22:21
Comment from: Marijke [Visitor]
Great tutorial! groetjes van Marijke
09/27/14 @ 22:48
Comment from: Martha in Louisiana [Visitor]
Thanks for the tutorial. I just got this attachment, too. I have not yet used the circle cutter, but did use the edge guide to cut a dado in a wall to run an electric wire. I was pleased with the tool in that use, as well.
09/28/14 @ 07:09
Comment from: Norma [Visitor]
Thanks for the heads up on this very useful tool, and the tips for using it Brae. Will add it to my Pinterest miniatures tutorial board because there are probably lots of people who will find it useful.
09/29/14 @ 15:08
Comment from: Doug S [Visitor]
Great tip Brae...looks like a great tool I must have someday soon! Doug
10/01/14 @ 04:40
Comment from: Julie Benningfield [Visitor]
Interesting! I am always needing circles to make music boxes. The product demo showed it cutting cieling tile, which is a piece of cake because it it so soft. I looked to see if they sold a smaller cutting bit, but 1/8" seems to be it. I'm sure cutting 1/8" into plywood would cause a lot of vibration and noise. Maybe it would be easier (and quieter!) with a softer wood. I wonder what would happen if you used a small drill bit for cutting. Hmmm... Thanks for the demo! Julie
10/01/14 @ 11:37

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