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General control line discussion => Open Forum => Topic started by: stephen hollier on May 28, 2012, 09:16:24 PM
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I use automotive primer what grit sand paper do you use? i have been using 400 grit and wet sand.
Thanks for the help
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lacquer or catalyzed,,
regarless, you could start with 240, go to 320 then finish with 400,, the courser paper you start with, the straighter the resultant surface will be
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Mark, I was going to say that myself, but it's been so long I couldn't remember if it applied over open bays.
Do you really start with 240 over open bays, or do you start finer?
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depends, I start with what I need to use to get rid of the testure I am getting rid of,, it takes what it takes,, if your primer is nice and smooth with no orange peal, then 320 would be fine, if you have orange peal, ( or grapefruit skin) ;D sometimes its better to hit it a good one shot with 240 to cut the tops off,, My avenger was finish sanded with 320,, no lie,, that was my final sanding on the surfacer,, because I knew I was spraying a sealer coat over it and that would hide the 320 scratches,,
OBTW, next column,, sandpaper
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What Mark said sounds real close to what I do.
I do it dry, wet sanding at the primer stage is too messy. Much easier to blow or wipe off the sanding dust.
I sand the primer/surfacer to 320, then shoot a clear coat and sand that to 400~600 before going to color coat.
I never do any wet sanding till I get to color, trim, and clear coats.
Steve, you going to Dallas contest ?
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Thanks guys it's been awhile since I finished a model.
Allan- My current plans are to attend Dallas. I will keep you informed if things change. How about you?
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Thanks guys it's been awhile since I finished a model.
Allan- My current plans are to attend Dallas. I will keep you informed if things change. How about you?
I'm a strong maybe right now. Depends if I get someone else to come along. Also plan to watch wind & weather forecast and cancel at last minute if I dont like what I see.
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Last Sunday must have been windy nation wide. I want to thank those that stayed home because of the wind. I would not have gotten first if a few would have showed up. Jim Kraft was there, but the doctor has him on limited exercise/activity. His lovely wife was keeping a good eye on him too.
Now back to the subject I did a wet sanding job on one plane years ago. Never again. After blowing dust off plane, I use a slightly damp rag to wipe it down. 220 grit for most of my sanding, guess that is why it takes so long. ALso a good sanding block of appropiate size. H^^