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Chassis and underside stripping


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Hi all.. finally making some progress.  Welded the sill on and got the body.off the chassis.    Chassis is really solid albeit grimy!  the underside of the car is great albeit coated in the factory undercoat, the bits that have fallen off show really fresh white paint underneath.    My question is whats the best way to clean and strip the undercoat off without damaging the paint underneath.    Or being as it's so solid could I just put some raptor or other bedliner type coating over the top? 

PXL_20230822_165321487.jpg

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You would struggle to get it all cleaned off without chipping paint, I have used hot air gun and scraper or paint stripper will soften it enough to get most off though its really difficult again to get it sufficiently clean for recoating. Dont be tempted to try just recoating over the top and hope for the best. Its worth doing it properly and body colour underneath is much more satisfying ;).

Stuart.

 

Marks TR5 559.jpg

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You need a Crud Thug!   The original Snap-On tool is very expensive: https://shop.snapon.com/product/Remove-All-Tool/Crud-Thug-Removal-Air-Tool/PTGR280

But alternatives are available:  

Dynabrade Nitrozip https://dynashop.co.uk/product/dynabrade-nz1-nitrozip-eraser-wheel-tool/

Eastwood Rotary removal tool  https://www.frost.co.uk/eastwood-pneumatic-rotary-removal-tool/

Wurth Pneumatic sander, with brush belt: https://eshop.wurth.co.uk/Product-categories/Pneumatic-brush-sander-DBS-3500/31085002090101.cyid/3108.cgid/en/GB/GBP/

These need compressed air - electric versions are also available.

John

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23 minutes ago, john.r.davies said:

You need a Crud Thug!   The original Snap-On tool is very expensive: https://shop.snapon.com/product/Remove-All-Tool/Crud-Thug-Removal-Air-Tool/PTGR280

But alternatives are available:  

Dynabrade Nitrozip https://dynashop.co.uk/product/dynabrade-nz1-nitrozip-eraser-wheel-tool/

Eastwood Rotary removal tool  https://www.frost.co.uk/eastwood-pneumatic-rotary-removal-tool/

Wurth Pneumatic sander, with brush belt: https://eshop.wurth.co.uk/Product-categories/Pneumatic-brush-sander-DBS-3500/31085002090101.cyid/3108.cgid/en/GB/GBP/

These need compressed air - electric versions are also available.

John

They will just remove everything, thats not exactly what the OP asked.

Stuart.

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6 hours ago, stuart said:

You would struggle to get it all cleaned off without chipping paint, I have used hot air gun and scraper or paint stripper will soften it enough to get most off though its really difficult again to get it sufficiently clean for recoating. Dont be tempted to try just recoating over the top and hope for the best. Its worth doing it properly and body colour underneath is much more satisfying ;).

Stuart.

 

Marks TR5 559.jpg

Thanks Stuart.  I've got a hot air gun.   I'll have a go 

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I used a hot air gun and a metal scraper and cleaned the residue off with white spirit or tar and glue remover. The metal scraper is almost certain to cause some damage to the paint. A hard plastic blade of some sort should do the job but not too close to your air gun!
Tim

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