Filler

Hambone62 · Oct 22, 2016

Working on Farmall C gas tank with shallow rust pitting. What to use to fill the pitting?

da.bees · Oct 22, 2016

Assumeing you are talking about outside,you need to sand well then treat rust with Phosphoric acid before laying on 2-3 coats primer-filler.

Stephen Newell · Oct 22, 2016

What I would do is remove the gas tank and dry the gas inside and sandblast the exterior. It's important to dry the gas out because sandblasting causes a few sparks. Then prime the gas tank with epoxy primer and then if it's someplace that shows fill the pitting with bondo. Then epoxy prime again and paint with a urethane topcoat.

notjustair · Oct 23, 2016

Yup, I'd use a high build primer. Put on a layer and sand and repeat. It sometimes takes me several layers to get where I want.

dr sportster · Oct 23, 2016

A two part putty like Dolphin or similar brand. Thinner and more flow than bondo types.

Dune Country · Oct 23, 2016

They make a "spot putty" in different brands. Comes in a tube Used to fill minor scratches and pitting.Dries fast and sands well. You can use it under or over primer.

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Hambone62

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da.bees

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Stephen Newell

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notjustair

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dr sportster

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Dune Country

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