The Stovebolt Site Forums The Shop Area Paint and Body Shop Flexing of the hood with bondo on

I've taken the hood apart on my 46 and have been working on it for the last few weeks. Because of all the rust removed and down to bare metal, I want to put a very thin layer of bondo on to fill in rust pit marks. Problem is the two sides of the hood flex as I have removed the side doors and hinges to work on the hood. question is with the thin layer of bondo on will the flexing from sanding crack or break the bondo, or is it better to assemble the hood to make it more rigid, block it up on the floor and then sand. If anyone knows what I should do please advise. Thanks Bob T

Good question, I'm facing the same problem with my 40.

I was thinking of using the Slick Sand primer from Eastwood.

I haven't started yet, has anyone used this product? Will it fill in pitting?

Greg

Yes slick sand will easily fill pits small dents etc.Problem,a little hard to sand,board it with 180 grit then high build prime,as far as bondo cracking,I don't think so on that application,too thin.

Evercoat Company [the fiberglass people] used to make an epoxe based spray product called "Fiberfill", that used the MEKP [methyl ethyl Ketone peroxide] as a catalyst hardener just as the fiberglass resin does. This stuff is messy, hard to spray, clogs a gun with less than a 17 tip, and even harder to clean up, not to mention the fumes are deadly....but it works fantastic on a freshly sand-blasted pitted surface. Oh, and you better block it with 180 within 24 hrs or you will think you are blocking concrete. As a matter of fact, I will be looking for a gallon soon for a '41 Plymouth body....lamarB

Polyester primer is a great product for things like pitted panels as you are working with.

"Slick Sand" is made by Evercoat,it may be sold by Eastwood, but it is an Evercoat product (click here) .

I don't know of an Evercoat product called "Fiberfill" (they do have a new reinforced filler called "FiberTech") but they do make one called "FeatherFill" and is a polyester primer, not an epoxy. If it used MEKP, it is a polyester. In fact, FeatherFill and Slick Sand along with a couple others are in their polyester primer line.

The newest being FeatherFill "G2" (Generation II) and is a much better product than the old one.

There is no reason to worry about the flex of the hood. Polyester primer holds up real well.

Brian