Rounding cookie slab edges. - Router Forums
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post #1 of 17 (permalink) Old 09-07-2020, 10:24 AM Thread Starter
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Default Rounding cookie slab edges.

Hi,
I am sanding some cookie slabs, what size of bit do i need to round of the edge? My router will take a 1/2 shank.
Or what is the best way to round the edges?

Thanks in advance.
Jimmy
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post #2 of 17 (permalink) Old 09-07-2020, 10:28 AM
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what size are the slabs and what profile are you looking to do...

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post #3 of 17 (permalink) Old 09-07-2020, 10:41 AM Thread Starter
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They are from 2 ft to 3 1/2 ft. Not sure about profile, a smooth round edge for a nice feel and look.
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post #4 of 17 (permalink) Old 09-07-2020, 10:59 AM
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Can you post a picture? Save to your computer then post. What shape are the slabs? How thick? what kind of wood? Are they end grain ,or long grain? It helps if we know all the details.
I usually use an 1/8" or 1/4" quarter round bit if i want a simple edge.

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post #5 of 17 (permalink) Old 09-07-2020, 10:59 AM
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Quote:
Originally Posted by jimhumphries27 View Post
They are from 2 ft to 3 1/2 ft. Not sure about profile, a smooth round edge for a nice feel and look.
thumb nail, finger nail, round over.....
it's all in the mind's eye aesthetics...
https://www.freudtools.com/explore/r...edge-treatment...
https://www.freudtools.com/products/99-027
....

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post #6 of 17 (permalink) Old 09-07-2020, 11:45 AM Thread Starter
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2 to 3 1/2 ft in diameter.
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post #7 of 17 (permalink) Old 09-07-2020, 02:43 PM
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2 to 3 1/2 ft in diameter.
are they end grain???
what species of wood???...
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post #8 of 17 (permalink) Old 09-07-2020, 04:04 PM
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How much of a rounded edge makes a difference in what we would suggest too. Also, are you planning on doing it handheld or do you have a router table to do it on?
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post #9 of 17 (permalink) Old 09-07-2020, 05:04 PM
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If you want a nice half round edge and you are 3/4" thick, then use a 3/8" quarter round bit,with a bearing guide, and run both sides.
https://www.amazon.com/Whiteside-200...s%2C231&sr=8-6

https://www.amazon.com/Freud-Radius-...9516397&sr=8-7

https://www.amazon.com/Freud-Radius-...517118&sr=8-18

It is hard to get a full round with this bit, but can be done on a router table with the proper fence set-up. I use half round bits on the router table to get a full half round. But if you don't have a router table then go to the 5/16" quarter round and you will get very near a full half round routing from both sides.
The problem is that with the bearing guide, the first cut will be 1/2 of the way down,on a full 1/4 round bit and the bearing will drop below center of the edge and will then not give a true half round overall.


HErb
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Last edited by Herb Stoops; 09-07-2020 at 05:19 PM.
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post #10 of 17 (permalink) Old 09-07-2020, 05:19 PM Thread Starter
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Hi Herb,

The slabs are 2in and 4in. Cypress Pine. I'm not sure what size of roundover bit to use, I just need the edges slightly rounded. The cookies are end grain 2-3 1/2 in dia and the long slabs are 3 yards by 2-3 feet.
I will be doing it handheld with a Dewalt 625.
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