my adventures in painting the car thread, DONE! Some final thoughts... |
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my adventures in painting the car thread, DONE! Some final thoughts... |
914 RZ-1 |
Jul 11 2018, 09:55 PM
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#1
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Porsche Padawan Group: Members Posts: 683 Joined: 17-December 14 From: Santa Clarita, CA Member No.: 18,230 Region Association: Southern California |
So I painted my car. Got some orange peel, thought I'd see if anyone had ideas for getting rid of/minimizing it.
After painting: After sanding with 1000 grit. The lighter areas are where I sanded, the darker areas are the lower points of the orange peel: Option 1: I'm thinking I need to go to 800 grit, then 1000, 1500, 2000, then polish. Before I do I thought I'd see if anyone else thinks this is a good idea based on what they may have done. Option 2: I can re-paint it. I'm thinking I will sand with 400 grit to rough up the surface and then re-spray. Option 3: I can polish it more, but the orange peel is still noticeable on the smaller pieces I've tried. I used a Torq X polisher, white pad, Chemical Guys V32 polish. I thought it might get smoother as I polished it with finer and finer pads/compounds, but I don't want to burn thru the paint. I put 3 coats of paint on. |
914 RZ-1 |
Jul 31 2018, 04:17 PM
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#2
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Porsche Padawan Group: Members Posts: 683 Joined: 17-December 14 From: Santa Clarita, CA Member No.: 18,230 Region Association: Southern California |
So, I'm still getting some orange peel. I thought I could sand it out. I'm not sure what I'm doing wrong.
QUESTION 1: In theory, I paint the 1st coat with orange peel. Then the 2nd coat goes on. It fills the "valleys" in addition to adding to the "mountains". I should be able to sand the taller mountains down and get a smooth finish, correct? QUESTION 2: This is probably related to question 1. I'm getting small pinholes in a really shiny field of smoothness after I sand with 800-1000, then polish. I'm guessing these are the bottoms of the "valleys". I'm thinking I'm not sanding down far enough or not using the right grit sandpaper (I start with 800 or 1000 and wetsand it) or I'm not polishing it enough. I use Chemical Guys V32, then V-36 with a Torq X. I let the polisher spin and don't press hard (it doesn't spin if I do). QUESTION 3: Spraygun at 30psi at the handle gauge, right? How much pressure drop is there to the tip? The tip says 10 psi max. Compressor is set for 90 at the outlet. Is there a range of psi that could work? In other words, does 5 psi make a huge difference? Any tips, help, etc, would be appreciated. I'm getting tired of sanding out my screwups! I'm also running out of time (and paint!); I start back up at work soon and I also want to be done before my neighbor complains again. |
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