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rustyj14
12-02-2006 13:15:32
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Re: bodywork on a JD H hood in reply to 1951g, 11-14-2006 08:24:21
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When sanding plastic filler (Bondo) you should use open coat sand paper. There is a paper made that is 40 grit, which you should use to block sand the bondo. then use 80 grit paper to fine tune the sanding process. Always use the sand paper on a long block of wood, or something you can put the paper on. They sell a long sanding board, with paper clamps, that will take the "long skinnies" of either 40 or 80 paper, and which are great for finding low spots. Most if not all auto body supply shops have those boards available. Never use wet sandpaper on fresh cured Bondo! It will make it separate from whatever you put it on. After you have it sanded down to where you want it, then prime, and sand it with wet sand paper on a block. Use a guide coat, available at supply store, in a rattle can. Spray the guide coat on the job before you sand, This lets you see where the low or high spots are. A light coat is all that is needed, and block sand it when dry. Repainting is a tough, hard, time-spending task, if you want to do it right. There ain't any short-cuts. In as much as you have warped the metal by sand blasting it, you might be better off to buy another part. Or, take it to a professional auto body shop and have them fix up yer mistakes.
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