Any body work pros out there?

[Ben]

I am working on a truck cab that I have modified and intend on having it cast into resin. Therefor the body work needs to as perfect as possible. I am using two part polyester finishing putty to fill tiny indents and pin holes. I then sand everything down to 2000 grit and then shoot some SEM self etching primer. I know I don't need the self etching type but that's what I had on hand. The problem I'm having is that even after carefully block sanding, the holes and some indents still appear through the primer? Any suggestions?

Also, is that Mr. Surfacer good for filling in pin holes and such to where you don't have to mix up a batch of putty for a tiny area?

[MikeMc]

use one part finishing / glazing putty for pinholes....let dry overnight then block it should be smooth

if more pinholes are now present in other places its your filler and primer reacting so let it all dry, sand it down or strip it, and re putty

[Ben]

use one part finishing / glazing putty for pinholes....let dry overnight then block it should be smooth

if more pinholes are now present in other places its your filler and primer reacting so let it all dry, sand it down or strip it, and re putty

Hey Mike, I've always heard the one part stuff is bad about shrinking?

[Foxer]

It does shrink, but not at all noticeable for pinholes and such. I always use one part Bondo putty for thin, small finishing jobs. I can't really say why the 2-part stuff didn't seem to fill the pinholes, but it's pretty much overkill for small repairs.

[highway]

It does shrink, but not at all noticeable for pinholes and such. I always use one part Bondo putty for thin, small finishing jobs. I can't really say why the 2-part stuff didn't seem to fill the pinholes, but it's pretty much overkill for small repairs.

I, too, use the one part Bondo Glazing and Spot putty, and really haven't had a problem with it shrinking, unless the cracking while it dries if you apply too much of it or too thick is what Mike and Mike are talking about with shrinking. I used the one part too finish the imperfections in this custom sleeper after using regular Bondo to fill and shape the roof to match the kit pieces in the front and rear of it.

[MikeMc]

Hey Mike, I've always heard the one part stuff is bad about shrinking?

It will shrink if used as "filler" . But for pinholes and the like it works well ...more like a real thick primer.

Tamiya also has a thick liquid surface primer that also will work.

[Ben]

Mister Wicker,

White or gray. It's very good for pin holes and small seams.

That's the type of stuff I was hoping to find! It appears to be the same type of product as Mr. Surfacer. The Mr. Surfacer comes in different consistency's though. I didn't want to use any type of spray primer as all I would be doing is putting another layer of paint of the details I do want to be visible. With something like this, I can place a drop on the pin hole or indent and sand it smooth.

Thanks Anthony!