The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Sand blast verses grinding and wire brush on grinder.

Foot Stomper · 02-21-2017, 04:47 PM

You have to remove any loose material by any means possible. This is a must. If you can scratch, scrape, sand, pick or wiggle any debris off of the surface keep scratching, scraping etc... Media blasting is the most expensive but for a reason. It reveals the true condition of your truck, saves you much time and is the most effective way to remove all rust.

If you can see rust and can't get it off, that's ok.

Make sure you use a 2 part epoxy primer as soon as you're done scraping. There are many good epoxies out there so don't hung up on brand, just make sure it's not a "generic" brand such as ProForm as was used on this truck before I purchased it. (it had to come off!!)

The door picture is after being media blasted. Visible rust is OK. Obviously there's some work to do on the door before painting, but it is ready for epoxy primer.

02-21-2017, 04:47 PM	#2
Foot Stomper Registered User Join Date: Oct 2015 Location: Calgary, Alberta Posts: 1,252	Re: Sand blast verses grinding and wire brush on grinder. You have to remove any loose material by any means possible. This is a must. If you can scratch, scrape, sand, pick or wiggle any debris off of the surface keep scratching, scraping etc... Media blasting is the most expensive but for a reason. It reveals the true condition of your truck, saves you much time and is the most effective way to remove all rust. If you can see rust and can't get it off, that's ok. Make sure you use a 2 part epoxy primer as soon as you're done scraping. There are many good epoxies out there so don't hung up on brand, just make sure it's not a "generic" brand such as ProForm as was used on this truck before I purchased it. (it had to come off!!) The door picture is after being media blasted. Visible rust is OK. Obviously there's some work to do on the door before painting, but it is ready for epoxy primer. Attached Images __________________ So when is this "Old enough to know better" supposed to kick in? My 1959 GMC build thread http://67-72chevytrucks.com/vboard/s...d.php?t=686989 Last edited by Foot Stomper; 02-21-2017 at 04:58 PM.