Bent Laminations
"J. Clarke" wrote:
I think the stuff you're looking for is Weldwood Plastic Resin Glue,
snip
It used to come in pint cans but now the smallest seems to be a pound. I
don't know what the real shelf life is--officially it's "1 year minimum" and
I wouldn't use it older than that for an aircraft, but for noncritical uses
I have a can that I've been using up gradually that is at least 15 years old
and still seems to set up fine.
Thanks, J. FWIW, I saw a detailed instruction sheet for a similar
product (water-activated powdered precat urea formaldehyde) that said:
:Note: If powder won’t easily and readily dissolve into the water, or if the mix appears sandy
:and/or grainy, the product should not be used. These working characteristics provide a built-in
:safety check signaling the powder has passed its shelf life.
Ace Hardware lists it online, but only in 4.5 pound containers for over 20
bucks--you might want to call around and see if they have the one pound size
in the stores.
I found it at the 5th Ace I called. Suspicious of the shelf life
already used on the store's shelves, given the dust on the container,
but decided to go ahead based on your experience and the advice quoted
above. (and my boldness was helped by the whopping total of $6 at
riskg)
I haven't used it so can't say how good it is, but try
http://www.woodweb.com/knowledge_base/_Spreadsheet_Calculation_Program.html
which is an Excel spreadsheet that purports to calculate springback for
laminations.
Lots of neat stuff in that spreadsheet. Thanks.
--
Alex -- Replace "nospam" with "mail" to reply by email. Checked infrequently.
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