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I started with some 3/4” ply that's been lying around the shop for 5 years. I cut some kerfs across an 18” strip to bend it 90°. These kerfs go through all but the last ply. This will be a "box" and there is a 3/8” x 1/2” dado to accept a 1/2” ply bottom.
I hit the kerfed ply with boiling water, bent it around with the bottom in its dado, and it is now sitting in clamps.
Does the wood have to be completely dry before I glue it with Elmer's Carpenters Glue Max?
Carolyn
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I would let it dry.
Steve
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WaterlooMark 02/9/2020
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(04-26-2020, 02:57 PM)MsNomer Wrote: I started with some 3/4” ply that's been lying around the shop for 5 years. I cut some kerfs across an 18” strip to bend it 90°. These kerfs go through all but the last ply. This will be a "box" and there is a 3/8” x 1/2” dado to accept a 1/2” ply bottom.
I hit the kerfed ply with boiling water, bent it around with the bottom in its dado, and it is now sitting in clamps.
Does the wood have to be completely dry before I glue it with Elmer's Carpenters Glue Max?
Definitely let it dry.
Dave
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Will do. Thanks.
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Gorilla Glue - which uses moisture to cure.
Still Learning,
Allan Hill
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(04-27-2020, 06:09 PM)AHill Wrote: Gorilla Glue - which uses moisture to cure.
That was my first thought but it might be wise to let it dry some anyway. Too wet = lots of foaming = weak joint.
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I let it dry and the glue-up went fine. Kinda proud of how the kerfs came together. This is the inside of the curve:
Carolyn
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That curve came out very clean. Nice work.
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(04-26-2020, 02:57 PM)MsNomer Wrote: I started with some 3/4” ply that's been lying around the shop for 5 years. I cut some kerfs across an 18” strip to bend it 90°. These kerfs go through all but the last ply. This will be a "box" and there is a 3/8” x 1/2” dado to accept a 1/2” ply bottom.
I hit the kerfed ply with boiling water, bent it around with the bottom in its dado, and it is now sitting in clamps.
Does the wood have to be completely dry before I glue it with Elmer's Carpenters Glue Max?
Yep let it dry.
I really hope you have taken pictures of what you did to show me how you cut it and then bend it. Are you using a cargo strap to get it all together??
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Sorry, Arlin, this was my first photo. I started with a ~40” x 18” strip of 3/4” ply. On either side of a 5 3/4” “dead zone”, I cut 10 kerfs with 7/16” wood in between, approximately according to the formula from this site—I did a test and made some adjustments.
https://www.blocklayer.com/kerf-spacingeng.aspx
The end result is a ~12” x 16” rectangle with two rounded corners, so clamps worked fine for glue-up. I rolled the rounded corners over the outfield table and they snuck in just fine.
Carolyn
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