If you use a plastic welding gun to repair your ABS shell you will find
that the styrofoam will burn out to a carcinogenic fume, NOT GOOD FOR
YOU. Two part epoxy and urathane is good for repairing Polycarbonate
and Polypropolyne bumpers not every brand will work on ABS. If it does
the down side is that you can have a lot of cleaning of the repaired
area if asthetics are a concern and might absorb chemicals that splash
on it during day to day use unless sealed. I would use MEK (Methyl
Ethyl Ketone) solvent as a plastic welding glue, if it is a neat crack
and you are careful you shouldn't have any problems, try small strips
of duct tape to hold the join together while it sets. Some hardware
stores sell it, I usually purchase it from good hobby shops.

from Glenn
Mobile Plastic & Vinyl Repairs
Australia

On Jan 6, 5:03 am, " wrote:
I have a 1975 Snark Sunflower. It has an ABS shell over the styrofoam.
I need to repair the shell -- it has cracks in it, and nothing's
missing. Other than duct tape and paint, what's a good idea? Isn't
there a chemical I can use to weld it back together?

Thanks.

M