Farm Equipment - Sandable primer question

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Sandable primer question

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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=23150
Printed Date: 20 Feb 2025 at 2:41pm
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Topic: Sandable primer question

Posted By: WC7610
Subject: Sandable primer question
Date Posted: 31 Dec 2010 at 5:49pm

Working on a gas tank and hood for AC with a lot of rust pitting. After removing the paint sanding/grinding, the pitting is still too much to leave as is and paint.

Any suggestions for a good sandable primer to fill in some of this pitting? I'm using Dupont epoxy primer on the rest of the tractor-do I need to put this epoxy on first or should the sandable stuff be on bare metal?

I also thought of using a thin layer of body filler and then sand down to fill in these pits?

Any suggestions appreciated.

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Thanks

Most Bad Government has grown out of Too Much Government- Thomas Jefferson

Replies:

Posted By: Denis in MI
Date Posted: 31 Dec 2010 at 6:05pm

Body filler or glazing putty will save you alot of time and troublt over painting and sanding to get rid of those pits.

just my opinion,

Denis

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1938 B, 1945 B, 1941 IB, 1949 C, 2 1938 WCs, 3 1950 WDs, 1951 WD, 2 1955 WD45, 1957 D-14

Posted By: Toscani
Date Posted: 31 Dec 2010 at 6:58pm

sandable primer does not stick well to bare metal,use your epoxy then fill with primer or a glazing putty,depending how bad the pits are ,try 4 good coats then sand to see if you burn through to metal before pits are gone if u do use the putty

Posted By: Jack(Ky)
Date Posted: 31 Dec 2010 at 10:23pm

I have been using an epoxy high build primer made by Acme and I really like it. I have been doing bodywork either full or part time for 40 years and the materials have really come a long way. This primer is a self etching primer so you can put it directly on bare metal. Only a few years ago you had to use a self etching bonding primer and then put the high build on top of that. If you want the part # I can put it on here or PM me.JP