Round over bit for plywood? - Page 2 - Router Forums
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post #11 of 15 (permalink) Old 07-30-2019, 09:35 AM
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Depends a lot on the plywood. I wasted money on some Chinese crap that had a layr of bamboo strands inside. It splintered so badly it was completely useless. Baltic Birch, however, can really look nice with a roundover. Almost never use anything but BB anymore, only if I need a piece longer than 5 feet. Then I look for ply with many thin layers and pay a premium.

Another approach is to put edge banding on the ply and roundover the solid wood. This will be more decorative than a ply edge. A few years ago in an Amish area, I saw shelving of BB ply with a bullnose edge--really interesting and colorful.

1/8th would ease the edge, 1/4 would be a little more likely to tear out or spinter because it will attack 3 to 4 layers, each with grain in opposing directions.

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post #12 of 15 (permalink) Old 07-31-2019, 07:22 PM
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agree with the 1/8 bit. As stated, and this applies to all plywood, but yes mainly cheaper stuff you would get at home depot, and the like. The 1/4 roundover is much more likely to rip out/splinter the lower layers. And as you had stated, its not really for aesthetics more as a precaution as I see it (which if that is the case, then I would add a 3/4 solid edge with perhaps a contrasting wood.)
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post #13 of 15 (permalink) Old 07-31-2019, 10:17 PM
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Regular ply usually looks pretty bad when you try and round it over. Anything that I want to look good that has ply panels gets edge banded with solid wood as others have suggested. The solid wood rounds over just fine.
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post #14 of 15 (permalink) Old 08-01-2019, 07:18 PM
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I usually edge band ply with solid timber if I am going to round it over If i am not rounding over I use a 1/16 roundover to take the sharp edge off either side of the ply

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post #15 of 15 (permalink) Old 08-01-2019, 07:52 PM
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$20 buys you a cheap 1/2" shank bit. Check out Yonico on Amazon. Decent, and inexpensive.
As for the radius, it depends on what you are looking for.
I keep a 1/8" radius bit in a laminate trimmer to quickly ease edges. I also use 1/4" and 3/8" a lot.
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