Question on compound circle cutting

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Forum topic by gavia111 posted 09-21-2015 10:37 PM 498 views 0 times favorited 3 replies Add to Favorites Watch
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1 post in 402 days

09-21-2015 10:37 PM

Topic tags/keywords: how to router circle bevel question

I’ve been woodworking for years and for some reason can’t figure out the best way to make a specific cut. I need to cut an inner circle at 16” in diameter. This would normally be pretty easy, usually I’d build/use a circle jig on my router with a straight bit. But, the challenge is I need to bevel that cut 45 degrees. This is going to be done in 3/4” material.

I just can’t figure out the best way to get this done with precision. Any ideas? Thanks in advance.

3 replies so far

View daddywoofdawg's profile


1006 posts in 999 days

#1 posted 09-21-2015 10:49 PM

Have a band saw with that much throat?them tilt the table and make your circle with a jig.Or most jig saws can tilt 45 make a jig like the one for your router.

View Daruc's profile


459 posts in 556 days

#2 posted 09-21-2015 11:09 PM

Cut a circle as you normally would to use for a template
Put the template on the pc you need and cut another circle with your straight bit with the bearing on, riding the template.
Then, without removing the template, Get a 45 deg. champher bit with a bearing and run it around the hole.
The only thing is the 45 deg champher bit will have to be pretty big, like this.

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View pintodeluxe's profile


4827 posts in 2237 days

#3 posted 09-22-2015 12:14 AM

One of my old Bosch routers (an old version of the colt) has a tilting base.

I think I like Woodust’s idea better.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

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