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post #1 of 46 (permalink) Old 01-01-2018, 07:05 PM Thread Starter
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Not sure where to ask this question, so will start here. Mods please repost elsewhere if need be. Thanks.
I'm making a picnic table with pressure treated dimension lumber. The top will be made up of varying width sized 2x somethings. I have made a template to rout a pocket in one of the boards into which I want to permanently afix an aluminum plaque into. I have sized the pocket to be just a bit larger than the plaque to allow for any shrinkage or contraction of the wood. It would be flush with the top of the table.
My question is what would be the best adhesive to use to install it? I'm thinking maybe liquid nails or some other outside weather proof adhesive in a tube for a caulking gun. Mechanical fasteners or screws won't work, as I don't want to drill any holes in the plaque. I thought I could use what ever adhesive I decide on to fill the minute space between the plaque and the board. Otherwise, maybe some exterior silicon caulk? Any ideas to offer me? Thanks.
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post #2 of 46 (permalink) Old 01-01-2018, 07:12 PM
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PL Premium...
http://www.loctiteproducts.com/p/12/...n-Adhesive.htm

note...
it will expand so weight down your plaque till the adhesive is cured....
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post #3 of 46 (permalink) Old 01-01-2018, 07:20 PM
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+1 with Stick ( construction grade adhesive)
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post #4 of 46 (permalink) Old 01-01-2018, 07:47 PM Thread Starter
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Originally Posted by Semipro View Post
+1 with Stick ( construction grade adhesive)
Thanks for the quick replies. I haven't used the PL Premium before, so now I guess my questions would be how much it will expand, and how low will it take to cure? If I clamp the plaque to the board, will the adhesive expand up around the outside edge of the plaque? Then be easily cleaned off with a rag and a sharp chisel or putty knife? Should I "butter" the adhesive into one thin layer, or simply apply a bead to about half of the surface? Please bear with the questions. Thanks.
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post #5 of 46 (permalink) Old 01-01-2018, 08:03 PM
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held in place it won't expand much...
read the tube for cure time.....
MS cleans it up really well while it's wet...
dry it will shave/scrape easily..
one side application and more isn't better...

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

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Last edited by Stick486; 01-01-2018 at 08:10 PM.
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post #6 of 46 (permalink) Old 01-01-2018, 08:35 PM
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Not a good idea, using some types of pressure treated wood.
Safety information about usage of treated wood - PTW-Safety

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post #7 of 46 (permalink) Old 01-01-2018, 11:17 PM
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Frank I would go with what Stick suggested. I wonder if a few holes should be drilled under the plaque to let water seep out. In the winter if water freezes and thaws that might be a problem. Just a thought I had.

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post #8 of 46 (permalink) Old 01-01-2018, 11:39 PM
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No silicon, it will fail within two years my guess. I also recommend PL, either 400 or Premium, both are waterproof. It will expand very little. Rut a small block of wood on top of the plaque. Put similar blocks on either side of it. Lay a board on top. The weight of the board is probably enough.
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post #9 of 46 (permalink) Old 01-01-2018, 11:53 PM Thread Starter
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Quote:
Originally Posted by JOAT View Post
Not a good idea, using some types of pressure treated wood.
Safety information about usage of treated wood - PTW-Safety
A good point, but I think most of the pressure treated lumber sold today isn't nearly as deadly as the older lumber preserved with arsenic.
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post #10 of 46 (permalink) Old 01-01-2018, 11:54 PM Thread Starter
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held in place it won't expand much...
read the tube for cure time.....
MS cleans it up really well while it's wet...
dry it will shave/scrape easily..
one side application and more isn't better...
Thanks for all of the info.
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