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Any idea of how to make this bowl type table top with a router?

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Forum topic by ruco posted 05-31-2016 05:18 PM 839 views 0 times favorited 8 replies Add to Favorites Watch
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ruco

22 posts in 288 days


05-31-2016 05:18 PM

I want to make a coffee table top with a router, any idea of how to do it?
it has a 32” radius.
1” lip all around
thanks!


8 replies so far

View JoeinGa's profile

JoeinGa

7491 posts in 1475 days


#1 posted 05-31-2016 05:39 PM

Start cutting with the router in the middle, and work your way out. Be prepared to do a lot of sanding after it’s cut.

-- Perform A Random Act Of Kindness Today ... Pay It Forward

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Loren

8315 posts in 3116 days


#2 posted 05-31-2016 05:45 PM

It’s basically a pie crust table.

http://www.sapfm.org/forum/index.php?topic=1764.0;wap2

View bondogaposis's profile

bondogaposis

4037 posts in 1819 days


#3 posted 05-31-2016 06:28 PM

Swing it on a trammel, using a bowl bit.

-- Bondo Gaposis

View TMGStudioFurniture's profile

TMGStudioFurniture

55 posts in 287 days


#4 posted 05-31-2016 07:32 PM

There are a few pages describing how to do this with a router in Lonnie Bird’s book called ‘Shaping Wood’. His design is almost identical to what you want to do.

I’d imagine there’s going to be one heckuva lotta sawdust on that one, though.

-- https://www.etsy.com/shop/TMGStudioFurniture

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ruco

22 posts in 288 days


#5 posted 05-31-2016 09:31 PM

Thanks,
I will try Bondo┬┤s suggestion

View runswithscissors's profile

runswithscissors

2192 posts in 1493 days


#6 posted 06-01-2016 04:37 AM

A router sled (there are a number of posts that discuss how to do these), plus some kind of circle template would be my approach. And I would use a so-called bowl bit, because the corners of the bit are softened to avoid ridges from the router bit.

-- I admit to being an adrenaline junky; fortunately, I'm very easily frightened

View stefang's profile

stefang

15512 posts in 2802 days


#7 posted 06-07-2016 04:41 PM

The best way is to use a bowl/tray bit, This will round the inside edge and also be excellent for the rest of the job too.

-- Mike, an American living in Norway.

View Lazyman's profile

Lazyman

707 posts in 855 days


#8 posted 06-07-2016 09:38 PM

I like the sled idea (with a bowl/tray bit). You can do this freehand by starting in the middle and working your way out and using a trammel when you get to the edge but as the area you have removed gets wider than the radius of your base plate, you have to be careful not to tilt the router because half of it will be unsupported and as you get within base plate radius of the edge, you will be unsupported on the outside as well. If you don’t use a sled, once you have the center hogged out, you could add a spacer block with double stick tape to the base plate to provide support. You would use the spacer block to set the depth of cut.

Note that, if the depth is more that about 1/2” (can’t read the numbers on your diagram), maybe even a little less, you will probably have to do this in more than one pass so you might be able to do the first pass freehand and then make the finish cut with the sled. For the first pass a straight bit will be a little faster and use the bowl/tray bit on the finishing pass and lip.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

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