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Forum topic by LennyC posted 07-29-2018 04:00 PM 480 views 0 times favorited 2 replies Add to Favorites Watch
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LennyC

1 post in 392 days


07-29-2018 04:00 PM

Hi I am building a replica of a 1904 Oldsmobile light delivery. wood working is kind of new to me I have a question about gluing I have a panel of marine grade mahogany plywood. I need to attach red Oak molding to create a pattern and cover the outside edge I am not sure about the 2 different woods being glued together expansion and contraction causing problems later on. is this something to worry about.

Lenny C


2 replies so far

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Planeman40

1430 posts in 3215 days


#1 posted 07-29-2018 04:11 PM

You shouldn’t have a problem with expansion and contraction. Plywood has the grain of the inner plys running at 90 degrees to each other and this pretty much controls expansion and contraction. Keep in mind that marine plywood is made for use in boats and moisture is the cause of wood expansion and contraction. Wood expansion and contraction only takes place across the grain (90 degrees from the wood grain direction).

-- Always remember: It is a mathematical certainty that half the people in this country are below average in intelligence!

View John Smith's profile

John Smith

1924 posts in 617 days


#2 posted 07-29-2018 06:53 PM

how big is this going to be ? full size ?
will it live outside or in the garage ?
red oak is not a good choice for an exterior grade of lumber.
glueing red oak to mahogany plywood is not an issue UNLESS
both are saturated with water. IMO, that is where the problem is.
more info of your project would be helpful. the adhesion of oak and plywood
may not be the only issue for your build. (fasteners are also involved).
or – are you going to cut out the profile of the truck with a bandsaw or scroll saw
and glue the profile to the plywood to make like a big picture artwork ???
more information is needed in order to provide you with accurate feedback.

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-- I am a painter. That's what I do. I paint things --

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