On Wed, 15 Apr 2020 11:44:44 -0700, (Dave
Platt) wrote:
If you buy the West System G-Flex 655 boat-repair kit, you get two
very generous tubes of epoxy, some sandpaper, gloves, and "plastic
boat repair" instructions which goes through the above procedures in
detail. You can buy just the epoxy (without the extras) for a bit
less money. It's a more expensive initial purchase than the little
tubes you'll find at a hardware store, but it'll be enough to last you
for years.

G/Flex 650 is the less viscous mix.
https://www.westsystem.com/specialty-epoxies/gflex-650-toughened-epoxy/

G/Flex 655 is the thickened mixture.
https://www.westsystem.com/specialty-epoxies/gflex-655-thickened-epoxy-adhesive/

G/FLex 650 can be converted into the thicker G/Flex 655 by adding 406
Colloidal Silica:
https://www.westsystem.com/406-colloidal-silica/
However, I've never tried it.

Both epoxies require some form of surface preparation.
https://www.westsystem.com/specialty-epoxies/gflex-epoxy-adhesion-data/
Notice that the adhesion strength increases substantially with
sandpapering, alcohol wipe, and flame treating.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558