.

Also, can body filler be used on plastic?

It is not recommended for body filler to be applied over plastic bumper covers. This type of plastic has a problem with things adhering well. Body filler is designed for steel, galvanized steel, zinc coated steel, SMC, fiberglass, and aluminum.

what will Bondo adhere to? Clean and sand or scuff the surface to prepare it for body filler — it will not adhere to smooth, dirty or oily surfaces. Generally, if paint will stick, so will Bondo. 7. Conversely, if there's an area you don't want Bondo to stick to, apply a release agent (see tools and materials) or use Scotch tape or wax paper.

Considering this, will Bondo stick to plastic bumpers?

Bondo Bumper Repair Kit is so easy to use, you can do it yourself and get professional-looking results. Yet it stays flexible, matching the original functionality of bumpers and other semi-rigid plastic auto panels.

Does Bondo stick to paint?

Do not slap Bondo onto a smooth painted surface, it is not going to stick very well. The paint should be sanded off, to the bare metal, and then apply the filler.