Noob question.
If your glueing PU foam to a string or more PU foam what glue do you use?
Hey there
In Oz there is a glue called “vise glue” its a pu foaming glue which is easy to sand and shape.
In the states it is marketed as " Gorrilla Glue". It’s a polyurethane that expands ( void filler) and is triggered by the presence of moisture. Use the WHITE formula. When it first came out ten years ago I made test pieces that are still exposed to the weather and it retains integrity. It’s bulletproof, although not as easy to sand as you might hope. It’s a Bi#$% to get off your hands. Wear gloves or wear the glue for a few days.
thank you for the help
I was told by a guru to use Goria Glue
but he had special trick / process he was going to show me to make it work nice
he is no longer aviable to instruct me.
is anyone using any special technique?
Don’t know what that can be. But you will learn quickly about volume, the amount you use as it expands a fair amount. A thin layer spread on one side, wet the other and clamp. It only takes the amount for a THIN skim coat. Otherwise it will get messy. Just go for full %100 coverage, just not too thick.
Tad – as an alternative to the suggestions above, just use regular laminating resin - works fine, you can color it as you wish (white, red, whatever) and it’s not hard to sand. Nor does it expand like gorilla glue and the like…
What Keith said for poly u. That’s the way they did it all along basically, faster set time too. With E or X PS, gorrilla glue is the way to go. But he’s right about urethane.
I'm only making traditional boards in USBlanks Green or Brown density PU foam.
so two options are
- laminating resin
-thin full covarage gorilla glue
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Sorry to steer you away from the P.U. issue. You can use a lot of different glues. If you don’t like messing with a cure time you can use Elmer’s or Tightbond III
which will be water resistant. I’d just use P.E. resin because it is tried and true. It will leave you plenty of working time to lay-up but not take all day like the wood glues.
For PU stick with Keith's advice. You can color it or not. Whatever your preferance. That's the way Clark did it all those years. Since you are familiar with US Blanks; I would bet that is exactly what they are doing. It's a cleaner glue-up and sands/planes great. Don't over catalyze. Give yourself a little extra time.