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Old 12-11-2006, 07:12 PM
baddbob baddbob is offline
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Just use a sanding board and or block with 80 grit and run it over the bare metal, the waves will show in the scratches. The seams are what will haunt you after a chemical dip if the acid hasn't been thoroughly washed out. I've never heard of using a torch on them and have no idea if that will work. Just make sure you soak down the seams really good internally with a penetrating cavity wax after the paint work is done, I usually apply a thin coating of seamsealer over epoxy primer to the exterior of the seams and fill the seam with the cavity wax. You'll want a sanded texture with 80 grit if using epoxy primer, any orbital sander will work-your electic will work just fine. When grinding the grinder used should fit the job. Small die grinders work well for weld removal, large 9 inch grinders work well for large areas. I'd buy an assortment of boards and blocks, the most common used are the 18" 9" and smaller.
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