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Registered
Join Date: Sep 2007
Location: Ventura County, CA
Posts: 4,018
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Will Sodablasting Remove Undercoating???
I spent 8 hours of hard labor and a pneumatic scraper taking off the interior floor coating of my resto project. The tub is going to the mediablaster next. Will the sodablasting media take the undecoating off? ...Or, am I back to the trenches with a scraper?
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Craig T Volvo V60 - Daily Driver (I love it!) 997 Turbo - FVD Exhaust, GIAC Tune - 542 dyno hp on 93 oct 1972 Chevy K-10 Pick-Up Truck Hugger Orange 
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12-06-2011, 07:52 PM
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Registered
Join Date: Jul 2003
Location: SW Colorado
Posts: 170
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My car burned up in a fire and about 50% of the undercoating was burned to where it was dry and splotchy. I took a steel brush on a grinder to get it off. It was a long and nasty process even on a rotisserie. I took a scotch brite pad with laquer thinner to the undercoating that was still good. Then I primed, undercoated, primed again, painted and clear coated. It is one of those things that I am glad I did but don't ever want to do it again. Ever!
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Garmo '80 911SC |
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12-07-2011, 05:41 AM
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I would rather be driving
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
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blasting media will just bounce off the factory undercoating. You are stuck in the trenches.
Undercoating Removal - The Fastest Method Yet! Follow this up with a knotted wire brush (cup and radial). then wipe down, prime and recoat. The process sucks no matter how you approach it. Good luck.
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Jamie - I can explain it to you. But I can not understand it for you. 71 911T SWT - Sun and Fun Mobile 72 911T project car. "Minne" - A tangy version of tangerine #projectminne classicautowerks.com - EFI conversion parts and suspension setups. IG Classicautowerks |
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12-07-2011, 05:47 AM
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Join Date: Sep 2007
Location: Ventura County, CA
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Quote:
I called the blaster. He said they will solvent strip and wire brush it for me for "A few hundred bucks". I don't know exactly how much that is...but I think it's worth it!
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Craig T Volvo V60 - Daily Driver (I love it!) 997 Turbo - FVD Exhaust, GIAC Tune - 542 dyno hp on 93 oct 1972 Chevy K-10 Pick-Up Truck Hugger Orange
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12-07-2011, 09:59 AM
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AutoBahned
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this is why they use undercoating to shield the sheet metal from sand and gravel thrown up by the wheels
there are some nice pics of the Bosch (or is it Wurth) rotary brushes at work in other threads maybe someone has used dry ice to encourage flaking? |
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12-07-2011, 10:06 AM
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Registered
Join Date: Jul 2009
Location: Sharon Springs NY
Posts: 350
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dry ice will work, but you're going to need alot of it to remove all the undercoating on a vehicle. Jamie's method seems to be the best around.
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12-07-2011, 11:17 AM
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AutoBahned
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that's what I do on the interior - Fein tool to der rescue
but note his tag line re sucks always |
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12-07-2011, 01:55 PM
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Registered
Join Date: Sep 2007
Location: Ventura County, CA
Posts: 4,018
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I just determined the best way to do it...Hand the guy at the mediablasting shop $400, turn your back, and walk away. I don't want to know how they do it as long as it doesn't blow holes in my floorboards.
I guess it doesn't matter if it heat warps the metal. I'm going to re-undecoat it anyway, once I know there's no corrosion under there, and put in an RS carpet kit.
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Craig T Volvo V60 - Daily Driver (I love it!) 997 Turbo - FVD Exhaust, GIAC Tune - 542 dyno hp on 93 oct 1972 Chevy K-10 Pick-Up Truck Hugger Orange
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12-07-2011, 02:30 PM
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Diss Member
Join Date: Jul 2002
Location: SC - (Aiken in the 'other' SC)
Posts: 5,020
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When I visited RUF they had 2 guys with heat guns with scrapers attached going at the bottom of 72 they were doing a conversion on. That seemed to work ok but I think the multi-tool is probably faster.
I wonder if the dry ice blasting will go through undercoat. It would seem that the cold might harden the coating so it will chip off.
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- "Speed kills! How fast do you want to go?" - anon. - "If More is better then Too Much is just right!!!" - Mad Mac Durgeloh -- Wayne - 87 Carrera coupe -> The pooch. |
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12-07-2011, 02:46 PM
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