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Old 08-09-2004, 06:36 PM
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Block Party!

This is where I stand with my 71 cutlass project: I've stripped to bare metal, epoxy primed (2 coats dp-90), 2-K primed (3 coats k-36) now I need to block sand everything before I seal and paint. My question is: Do I wet sand? I was going to use 400 grit, any suggestions on what kind of sanding block or blocks to use.If I have any low spots do I need to strip back to bare and use filler or if it's a real shallow depression can i use 2 part spot putty over the K- 36? This is my first time so I can use all the suggestions I can get. I don't expect a 'show car" just a nice straight presentable driver. Also I need some advice on which sealer should I use. I'm using Ppg products so far. Sorry so many questions and thanks in advance. You guys and this site in general has been a huge help so far.

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Old 08-10-2004, 06:27 AM
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I would dry sand with long blocks and 400 grit to start with. Use a guide coat (a contrasting color using cheap lacquer paint from a rattle can sprayed very lightly just to dust the surface) and as you sand it off you will be easily able to see the low spots. If they are really low then you might need some filler. Little depressions can be handled with a little spot putty but make sure you don't put that stuff on too thick. It's designed to fill small holes and bubbles in the primer so be careful. When you think you have everything sanded straight, lay on another coat of primer and guide coat and do it again. Use the longest straight sanding blocks you can on each panel and sand in a criss-cross pattern. I'm sure some of our pros will chime in with their advise as well.

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