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 |
Aug 19 2018, 05:46 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 |
I'm STILL getting orange peel.
To review, here's the set-up: 1. 33 gallon compressor (8.6/6.4 CFM @ 40/90 psi, 2 running HP)>25' coiled hose>2 moisture filters>25' 3/8" hose reel>"pumpkin"-style filter>regulator>gun. 2. Gun: the $70 Harbor Freight one. I clean the gun thoroughly after use, by the way. All the important parts look new when I'm done. 3. Spraying single stage paint (R-M brand) at 30 psi (at the regulator). Using high temp reducer. I use mid-temp hardener. I mix the paint well to the proper proportions. I'm wondering if the paint is not going on wet enough? How do I tell, other than the obvious "it looks wet"? 4. 80-90 degree weather, 40-50% humidity in the garage. I made a makeshift vented "booth" to keep the dust and wind out. 5. I'm about 6-8" away. I'm not sure of spraying speed; maybe 12 inches per second? 6. I'm getting orange peel that will not easily sand out. I'm starting with 800 and using a long block. There are still shiny spots. How much orange peel is acceptable and sands out with 800 or 100 grit? The images I've found have way less than I'm getting. 7. Does the gun really matter? Should I get a better gun? The one I have seems to spray just fine; I think I am the problem! I've heard that better guns atomize better, but I've also heard that the painting conditions matter, too. Is there a price point at which the quality of the gun actually shows up/makes a difference? In other words, are guns below say, $100 all pretty much the same and I gotta spend at least $200 or whatever to get better quality that will actually matter? I know it's as art, but I thought I've done everything "right", but I'm still not getting good results. |
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