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07-18-2018, 04:07 PM | #1 |
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Method for sanding out wavy panels ...after paint
So i bolted my sons previously wrecked bed down and it seemed to have introduced some waves into the bedside below the body line. I'm going to try to sand and buff it to see how it turns out.
I am trying to decide if i should use a 9" block to knock the tops off, or a short 3" or 4" block to blend it all in. Obviously I can't go too deep, so i am afraid the long block will bridge over the lows. What to you guys think? Lynn |
07-18-2018, 04:20 PM | #2 |
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Re: Method for sanding out wavy panels ...after paint
can you get some good pics of how wavy it is? like lay a straight down the panel or something...a short block may just ride the wave you have where a long block will hit the highs and show where it needs worked..
I fought my doors that the sandblaster messed up and got them very close...now none of my lows are over 1/16"...they were nearly 2"....but it took a lot of hammer and dolley and finally I bought a shrinking disc and that worked miracles...im kinda proud of how they turned out considering what I started with..its the biggest body repair ive attempted....a skim coat of filler and its good now...
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07-18-2018, 05:57 PM | #3 |
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Re: Method for sanding out wavy panels ...after paint
2 inches thats crazy! They did a number on them. I can try and measure. I'm afraid a pic wont hardly show anything. They are so slight that you have to be moving as you look down the bedside to see them.
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07-19-2018, 12:13 AM | #4 |
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Re: Method for sanding out wavy panels ...after paint
How much clear do you have on?
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07-19-2018, 08:27 AM | #5 |
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Re: Method for sanding out wavy panels ...after paint
I put 3 wet coats of SPI universal clear.
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07-19-2018, 07:39 PM | #6 |
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Re: Method for sanding out wavy panels ...after paint
There's only one way to find out.
Start with 1500 until you either burn through the clear or make it flat. If you burn through, then you into high build with 320. If you still aren't straight when you hit body filler or steel, then it's 180. If you still aren't straight, you know what the next steps are.
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07-26-2018, 06:12 PM | #7 |
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Re: Method for sanding out wavy panels ...after paint
Each coat of clear is roughly .001" thick... not enough to block flat to remove waves without going through.
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07-29-2018, 09:06 PM | #8 |
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Re: Method for sanding out wavy panels ...after paint
Yeah, not going to get them all out. The more i look at it the more i think they were there all the time i just missed them.
Its a daily driver, so it will have to work. Lynn |
07-30-2018, 12:48 AM | #9 | |
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Re: Method for sanding out wavy panels ...after paint
Quote:
Brian
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08-03-2018, 11:02 AM | #10 | |
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Re: Method for sanding out wavy panels ...after paint
Quote:
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08-14-2018, 04:29 PM | #11 |
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Re: Method for sanding out wavy panels ...after paint
The two most noticeable spots are in the same place on both bedsides. I was reading on another forum on an old post, and they mentioned that the places where you start and stop (overlap) on your coats of clear can show up as waves. Has anyone ever delt with that?
Thanks Lynn |
08-14-2018, 04:33 PM | #12 |
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Re: Method for sanding out wavy panels ...after paint
That's called "urethane wave". Newer high solids clears are bad about looking wavy even over perfectly straight parts. You need 4-5 coats and cut it hard with 500 grit on a hard block (thin/flexible plexiglass is perfect) to cut the texture and "wave" out. It helps to not spray each coat overly wet.
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