circle cutting bits

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Forum topic by lunn posted 01-06-2014 12:48 PM 1038 views 0 times favorited 4 replies Add to Favorites Watch
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215 posts in 2304 days

01-06-2014 12:48 PM

I’ve had 2 circle cutting bits in a box of stuff for almost 2 years i bought at a auction . I used the small one for the first time Saturday. One cuts up to 6 in the other 12in. adjustable. Almost the same as the Rockler #42887. Although almost impossible to get a percise hole, these things work GREAT. No more fighting with a hole saw, getting the plug out, smoke etc. plus a very clean hole. The only down side is safety. The arm sticking out at 600 rpm could get your hand. Anyone else use them?

-- What started as a hobbie is now a full time JOB!

4 replies so far

View Danpaddles's profile


573 posts in 2307 days

#1 posted 01-06-2014 01:11 PM

As the diameter of your hole gets bigger, that single tooth has to cover more ground. Even at 600 RPM, that single point is doing a LOT of work. Keep your dust out of the cut, watch for burning. Keep that point sharp. And watch out when you touch it!

-- Dan V. in Indy

View Gene Howe's profile

Gene Howe

10479 posts in 3424 days

#2 posted 01-06-2014 01:19 PM

Ditto Dan.
I’ve used them, I do not like them. But, sometimes, they are the best way to go, especially if the hole is an odd size.
Paint about an inch of the end of the arm with a fluorescent orange paint. It won’t hurt any less, but you’ll be able to see it coming. Seriously, it does make you more aware of the spinning arm.

-- Gene 'The true soldier fights not because he hates what is in front of him, but because he loves what is behind him.' G. K. Chesterton

View hydro's profile


208 posts in 1747 days

#3 posted 01-06-2014 01:46 PM

I use mine fairly often and it works great. A little scary the first time you spin it up but just be careful.

-- Minnesota Woodworkers Guild, Past President, Lifetime member.

View b2rtch's profile


4861 posts in 3044 days

#4 posted 01-06-2014 01:54 PM

It was a big debate in the reviews section about these things a while ago , someone almost got hurt with one of those ( but a HF. he/she did not know how to safely use it).
I have used one one safely for many years (a HF style) and I find it very useful.

-- Bert

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