I've been experimenting with MINwax acrylic (satin finish) and foam and have made some progress as follows:
    - MINWAX acyclic can be used to bond 1/2 oz fiberglass cloth to foam with less trouble than finishing resin.  Just brush it through the cloth and use the good, old toilet paper roll to blot up excess per finishing resin technique.
- Micro balloons can be mixed with MINWAX acrylic to make a sanding sealer for foam.  One can also use this mixture with fiberglass cloth and fine sand it smooth when dry.
Note: I've only tried these experiments with 1/2 oz cloth.
 
        Jim Deck

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