 Undercoating/Seam sealer removal |
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| mr914 |
 Sep 12 2003, 07:30 AM
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#1
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914 Hillbilly  Group: Members Posts: 576 Joined: 11-January 03 From: Lincoln NE Member No.: 131 Region Association: None  |
Help!
I'm looking for a better way to remove the damn undercoating in the fenderwells. I tried aviation stripper and it laughed at it. (IMG:style_emoticons/default/laugh.gif) I tried sand blasting - (IMG:style_emoticons/default/headbang.gif) Tried the heat gun, it's way to slow. The only way I've found so far is the wire wheel on the angle grinder --- slow.... But then, how do I get into the nooks and crannies? Also, what's the best way to remove the seam sealer? Any magic bullets? (IMG:style_emoticons/default/fighting19.gif) |
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| tod914 |
Sep 12 2003, 07:49 AM
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#2
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Advanced Member Group: Members Posts: 3,755 Joined: 19-January 03 From: Lincoln Park, NJ Member No.: 170 |
You could try a citrus degreaser to melt it. But, if the aircraft stipper wont remove it, I don't think that will work. Mineral spirits/paint thinner might work too.
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| Brad Roberts |
Sep 12 2003, 09:31 AM
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#3
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
There is NO quick way. You have to use the heat gun and a 6 inch wide puddy knife to get off the large pieces.. then come back and use the 4 inch hand grinder with a 4.5 inch large wire wheel. Its labor intensive and there is NO way around it. I'm not sure what hand grinder your using.. but anything under a 4 inch electric and your spinning your wheels. My elcheapo Craftsman hand grinder rips thru it about 20-30 minutes per fenderwell. Set the trigger stop on full speed and plow thru it.
I can show you pics later of what we use... right now I'm packing for the German autofest. B |
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| Jeroen |
Sep 12 2003, 09:45 AM
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#4
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914 Guru Group: Members Posts: 7,887 Joined: 24-December 02 From: The Netherlands Member No.: 3 Region Association: Europe |
A wire wheel on a drill works good too.
Usually those are smaller than the ones you can put on a angled grinder and allow you better access to hard-to-reach places It's pretty time consuming though... cheers, Jeroen |
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| Britain Smith |
Sep 12 2003, 10:38 AM
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#5
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Nano Member Group: Members Posts: 2,354 Joined: 27-February 03 From: Hillsboro, OR Member No.: 364 |
I spent about 30 to 45 mins getting this far in my fender well with the hand grinder and a coarse wire bit. I have gotten a bit further since then, but it is long, manual work. I posted a thread recently talking about this process, but I am tackling the fenders, under the body, and the engine bay.
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| Korijo |
Sep 12 2003, 01:05 PM
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#6
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[]D o [] o []V[] o []D Group: Members Posts: 1,308 Joined: 16-July 03 From: North Bend, WA Member No.: 914 |
Heat it w/ a torch, then scrape w/ a putty knife. Then wire wheel/cup brush OR 60 grit sand disk the left over residue.
This is before the 60 grit fiber grinding disk. (IMG:http://www.nwfreshmarkets.com/well.jpg) |
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| mr914 |
Sep 12 2003, 02:27 PM
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#7
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914 Hillbilly Group: Members Posts: 576 Joined: 11-January 03 From: Lincoln NE Member No.: 131 Region Association: None |
I found that citrus degreaser worked like a champ for removing the black (zebart) undercoating. Let it soak and then hit it with a pressure washer.
I'm using a 4" angle grinder with coarse radial bristles. It took almost 2 hours for the front fenderwell. Including detailing out the inaccesable areas with a 1" wire wheel on a 1/5hp flex shaft dremel. Guess the project for the weekend is (IMG:style_emoticons/default/beer3.gif) Grind (IMG:style_emoticons/default/beer3.gif) grind (IMG:style_emoticons/default/beer3.gif) untill done. Pictures of the rust horror later. |
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| Rusty |
Sep 12 2003, 02:55 PM
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#8
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Wanted: Engine case GA003709 Group: Admin Posts: 7,941 Joined: 24-December 02 From: North Alabama Member No.: 6 Region Association: Galt's Gulch 
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For undercoating - soak with brake cleaner and a stiff bristle brush to get the bulk of the stuff off.
For seam sealer - elbow grease, by the bucket. |
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