Subject: Re: [harryproa] Messing around with composites.
From: "Rob Denney harryproa@gmail.com [harryproa]" <harryproa@yahoogroups.com.au>
Date: 10/6/2018, 8:08 AM
To: harryproa@yahoogroups.com.au
Reply-to:
harryproa@yahoogroups.com.au

 

Unlikely you will get a good finish from plastic, although the finish from packing tape is shiny, but the overlaps show, so maybe wide strips of it would work, but not as well as a polished surface.  Shiny epoxy is not much of a surface as it goes chalky in sunlight.  The usual solution is to lightly sand it, then plenty of coats of clear 2 pack polyurethane with uv inhibitors, with sanding every few coats.   

On Sat, Sep 29, 2018 at 2:00 PM '.' eruttan@yahoo.com [harryproa] <harryproa@yahoogroups.com.au> wrote:
 



| > What kind heat temp you think is needed? Electric blanket or flame? Probably something between?

| The epoxy wil soften at less than 100C/212F so more than a blanket,
| less
| than a flame. Hot air guns, or blower heaters work well.

Heat gun worked great. I put a little heat on the glass with a torch too, probably didn't need it and it popped off easy. Far less trouble than I thought it might be.

Blade cleaned glass up great. Will screw around again next week. This is amazing stuff. I was sure I had epoxied the stuff to glass permently.

Finish on the glass side was amazing. Can I get a shine like that with plastic sheet? The cheap PE plastic sheet side had a mat finish. Probably can buff or coat again to get a shine, but wonder if the proper nylon vac bag will give good finish.

Thanks again all.

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Posted by: Rob Denney <harryproa@gmail.com>
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