Lew Hodgett writes:
"MartinR" wrote:

I’ve heard that Bondo works just as good as the wood filler.

Unfortunately, a common error.

Bondo consists of polyester resin and a talc filler.

Polyester is NOT an adhesive.

Ever notice the holes in a auto body panel in the area where a Bondo
repair has been made?

the Bondo fills the holes and makes a mechanical bond with the metal.

The same logic was followed years ago in boat building before epoxy
became more cost effective.

OTOH, epoxy is an adhesive.

It's basic limitation is that is does not contain any UV inhibitors
and must be protected in applications exposed to direct sun light.

Lew

What about "Bondo Wood Filler"?
The manufacturer claims:
Rebuilds & restores rotted wood, windowsills, fascial boards,
siding, posts, etc. Replaces missing pieces on antiques, doors,
columns, and tables. Once dry filler can be sanded, shaped,
planed, drilled, routed or sawed. Accepts stain and paint more
naturally than most wood fill products...

Is it the same as Bondo for cars but just rebranded/marketed or is it
really as good as System Three or Abatron wood fill epoxy products?

Thanks