Catdog

I need to fill and smooth out the seam from a two piece ABS cowl. What do people use for this? It will need to be paintable as well.

Danh4

My Feedback: (5)

I use Bondo and it works great. Sets up fast, is easy to sand and is very paintable.

JimTrainor

I second the Bondo motion.
That is what Great Planes suggests in their manuals.

dr_wogz

My Feedback: (3)

Most hobby shops have a plastic specific putty for the platic models they sell. It also comes in a light grey!

I would rather this that the auto filler rust-red 'Bondo', because teh bondo does contain acetone which eats most plastics!

save teh bondo for the fiberglass stuff..

michpittsman

My Feedback: (11)

The solvent for abs is acetone; mix some abs scraps in acetone to make putty!...JIM

Catdog

Thanks all. I thought someone mentioned bondo, but I wanted to be sure. I'll check out the bondo at the local auto supply store - see what color it is. But that's what I'll use.

The "make your own" sounds cool - very good idea - but I better be safe and stick with the ready-made bondo for this. Thanks again.

linclogs

I do it the way mitchpittsman says.

Melt some scraps from the trimmings of the part in acetone - or dope thinner or MEK - makes a paste that you can use as a filler that is exactly the same material the part is made of. Same color, too. When it's dry, sand it smooth and finish it.

rflasch

My Feedback: (8)

Actually, if you haven't tried it you may want to try automotive lacquer glazing putty. It comes in a big toothpaste-type tube. It dries quickly and is very easy to sand. In fact, I dip my finger in lacquer thinner,mek,or acetone and pass it over the seam a few times and I usually keep sanding to a minimum. Any autobody supply shop should have it--I've even bought it at NAPA.