Posted by Duane WI on July 15, 2019 at 10:57:53 from (69.29.248.15):
As a follow-up to an earlier post about removing old paint from my project truck. I am removing the old paint and finding surface rust. I have come to realize that there are different types of rust and removing it can be easy or a real challenge. I remove the paint with a wire wheel on an angle grinder. I like the flat wire wheels for this not the cup type. This does a good job of paint removal but the surface rust laughs at it. This is my second truck restoration and like the first one, the top of the cab has a scale of very hard surface rust. I use an angle grinder with 80 grit flap disk to start attacking the rust but you need to be careful because it will also start to remove metal around the rust. I end up removing a lot of the rust with a small hard rubber sanding block and 40 grit. I can focus the pressure and sanding force on the problem areas and not remove a lot of good metal. This is slow hard work. Once I have the rust removed there are thousands of tiny pits the size of a pin head that I hit with phosphoric acid rust converter. Then seal everything up with epoxy primer.
The only other method I know to do this is sand blasting. I have a small pot sand blaster that works the heck out of my compressor. To be honest I prefer the hand sanding method to sand blasting. Sand blasting with a small home setup is not fun in any way. Do you guys have any other methods to do this? I know what I do works. I did my first truck this way and 8 years latter there are no issues. The other option is to send it out for sand blasting. I have priced this in the past and I think to have my cab blasted and primed would run $700 to $800. That is just the cab. No doors or fenders.
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