jaxenro Posted June 25, 2015 Share Posted June 25, 2015 Think the title says it all - i am using dupli-color perfect match scratch filler primer and a little putty and sanding it smooth but: What grit do you sand primer to before applying color coats? I am starting at 320 for the putty and primer but what should I take it down to? Quote Link to comment Share on other sites More sharing options...
High octane Posted June 25, 2015 Share Posted June 25, 2015 For sanding primer before applying color coats, I usually go over the primer lightly with 600 or 1000 grit and it seems to work just fine. Quote Link to comment Share on other sites More sharing options...
Snake45 Posted June 25, 2015 Share Posted June 25, 2015 If the primer's reasonably smooth, sometimes I don't sand it at all. When I do sand primer, I use #800 (wet) or a well-worn piece of #600. Quote Link to comment Share on other sites More sharing options...
Brett Barrow Posted June 25, 2015 Share Posted June 25, 2015 Either 1000 grit wet-or-dry or 3200 Micro Mesh pad, both used wet. Quote Link to comment Share on other sites More sharing options...
Stray Posted June 25, 2015 Share Posted June 25, 2015 I just lick mine. Sure my paintjobs tend to be crappy. But it tastes sooooooo good. Quote Link to comment Share on other sites More sharing options...
ZTony8 Posted June 25, 2015 Share Posted June 25, 2015 Is that what's meant by a wet coat? Quote Link to comment Share on other sites More sharing options...
Foxer Posted June 25, 2015 Share Posted June 25, 2015 Just don't do the "wet coat" after a grape Popsicle ... Quote Link to comment Share on other sites More sharing options...
Exotics_Builder Posted June 25, 2015 Share Posted June 25, 2015 1000 grit wet/dry or 1500 grit MicroMesh pad. This is Wet Sanded. Need just enough "tooth" for the base coat to better adhere. Quote Link to comment Share on other sites More sharing options...
Guest Posted June 26, 2015 Share Posted June 26, 2015 I just lick mine. Sure my paintjobs tend to be crappy. But it tastes sooooooo good. ????????that's pretty good! Quote Link to comment Share on other sites More sharing options...
Hemified71 Posted June 28, 2015 Share Posted June 28, 2015 (edited) I think you'll be fine with 800-1000 grit ( wet or dry, wet being the better alternative ?) The issue, BEFORE, you start/add colour coats, would be to seal your final primer coats, after sanding ) From experience, putties, any type really, tend to shrink over time & in some cases become visible through the colour coats, especially true for "ghosting"... Areas where mold lines or emblems etc have been sanded off. Sealing will ensure that none of these problems will become visible through your colour coats, especially if you're using any type of automotive paints ( Duplicolor etc ) Hope this helps ?? Edited June 28, 2015 by Hemified71 Quote Link to comment Share on other sites More sharing options...
unclescott58 Posted June 28, 2015 Share Posted June 28, 2015 Is that what's meant by a wet coat? Wet coat? If questioning wet vs dry sanding, it's just what it says. Wet sanding is done with water. Keeping the sandpaper and/or the model wet when sanding. Finer grits work better wet. Scott Quote Link to comment Share on other sites More sharing options...
Art Anderson Posted June 29, 2015 Share Posted June 29, 2015 Personally, I have used 6000-grit polishing cloth from Micromesh for as long as those polishing kits have been in circulation. As I tend to use lacquer primers, this gives me a satin-finish surface, which is, in scale, about as close as I would come to a wet-sanded primer surface on a real car body. Seldom have I ever had paint, either lacquer or even Testor's/Model Master enamels, thinned for airbrushing with lacquer thinner fail to adhere to such a surface-and in the bargain, I get a far smoother, thinner finish straight from the airbrush, requiring a lot less polishing to get a shine. Art Quote Link to comment Share on other sites More sharing options...
dmk Posted June 29, 2015 Share Posted June 29, 2015 I think you'll be fine with 800-1000 grit ( wet or dry, wet being the better alternative ) The issue, BEFORE, you start/add colour coats, would be to seal your final primer coats, after sanding ) From experience, putties, any type really, tend to shrink over time & in some cases become visible through the colour coats, especially true for "ghosting"... Areas where mold lines or emblems etc have been sanded off. Sealing will ensure that none of these problems will become visible through your colour coats, especially if you're using any type of automotive paints ( Duplicolor etc ) Hope this helps What do you seal it with? Quote Link to comment Share on other sites More sharing options...
cruz Posted June 30, 2015 Share Posted June 30, 2015 3200 Micro Mesh sanding cloth wet, works perfect. Quote Link to comment Share on other sites More sharing options...
Hemified71 Posted July 1, 2015 Share Posted July 1, 2015 What do you seal it with? Zero Paints ( UK ) sell a great sealer or try your local Auto Paint supply/parts store for some sealer or etch primer... ??? Quote Link to comment Share on other sites More sharing options...
b-body fan Posted July 1, 2015 Share Posted July 1, 2015 If you use an etch primer test it on something first. Some other them have some pretty rowdy solvents is them. Quote Link to comment Share on other sites More sharing options...
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