Re: [Paddlewise] Weldwood contact cement vs. Perception marine contact cement

on 8/19/00 5:33 AM, Dave Kruger at dkruger_at_pacifier.com wrote:


> Velcro to minicell foam, at least two years, sans abuse.
> 
> Velcro to surface of a Thermarest pad, three years, also sans abuse.  Neither
> shows any signs of loss of adhesion.
> 
> Velcro or minicell **to polyethylene** (such as in typical WW boat), can peel
> off the PE after a year or so, unless you are vigorously aggressive in
> roughing
> up the PE.
> 
> Caveat:  there **may** be some difference between the Perception stuff and
> Weldwood, though I bet it won't make any difference except for rare
> applications 
snip

Thanks for the information Dave.  You seem to be getting the same results
with Weldwood that I've had with the Perception contact cement.  I get good
results on the plastic if I clean it first with acetone then rough it up
with sand paper then use acetone again before applying a couple coats of
contact cement.  I let the first coat dry for about 15 minutes then apply
the second, doing the same on the foam or velcro.  Did you have trouble with
the velcro trying to curl up after you put the Weldwood contact cement on?
I like the Marine Goop better for velcro because it is thicker.  I can apply
one coat and the velcro does not curl up.  My Goop tests have resulted in an
excellent bond with foam/fiberglass, foam/foam, velcro/fiberglass, and
velcro/foam but I have not tried it with plastic yet.  Someone else on the
list did and had a good result and the instructions say it can be used for
plastic.  I sound like a salesman for Goop but have no connection with them,
yet.  :) 

Thanks again Dave and good luck on the Folbot.  Anyone else out there using
Weldwood? or Goop?

Rex

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