Here's how to repair a plastic panel with plastic:
1.Sand off anything that isn't plastic, like paint or adhesive.
2.Get MEK from the hardware store
3.Buy ABS sheet from your local supplier of plastics (grainger had sheets)
4.Do the following:
Align:
Cut a patch and heat form with a heat gun if necessary:
Use a disposable paint brush and work the surface with MEK until sticky. This happens very quickly. Clamp the surfaces together:
The panels bond fairly well within a few minutes, but take a few days to fully cure. New sections can be easily heat formed and patched in.
Once it's all cured you have a base to work with
To fill cracked sections on the top side mix scraps of ABS with the MEK in a glass jar, like a pickle jar with a lid until you get a paste the consistency of honey. You can just let the chips sit in the solvent for as long as you would like with the jar lid on. Sitting, it takes about 4-6 hours to melt. This paste can be used by drizzling it into the cracks. The paste takes the same 2-3 days to fully cure as the panel bonding method. Once hardened it can be sanded smooth. I'm looking for a very nice finish and the paste is rather porous. I'll be using a special SEM brand flexible body filler to complete the repairs on the panels prior to painting. More to come later!