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col1600 Samba Member
Joined: October 07, 2011 Posts: 62 Location: Ireland
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Posted: Mon Sep 27, 2021 12:06 pm Post subject: Block sanding long Bus panel |
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Hi all.
I'm not a pro. But am not an amateur body guy. Restored various vws with a very good quality paint finish. My goal in every build is to get all my panels lazer straight with hours and hours of priming, guide coat, block sanding.... Repeat. But never has a single panel gave me so much hassle to get straight. I'm restoring a 72 deluxe bus and the long panel is killing me to get straight. I've used long dúra blocks, home made long plexi blocks air sander.and I just can't nail this panel. I skimmed the complete panel 40 80 120ed it down and still I have a small wave directly inlíne with the reinforced bars behind the panel. The problem I'm finding is is that this panel is sooo easy to flex, that when I'm sanding it must be flexing even tho I'm not applying and excessive force to the panel. I'm cutting with 40 and 80 so not polishing the high build. Has any one reinforced the rear of the panel in order to stop the flexing. Has anyone ever sprayed expanding foam to the inside of the panel to hold in place.
Any suggestions would be helpful. Most of my problem comes down to being OCD over the top. I sprayed the panel in some spare 2k gloss black to see how far off the mark I was. And only I could see the imperfection in the panel. |
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Braukuche Samba Member
Joined: September 03, 2004 Posts: 10991
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Posted: Mon Sep 27, 2021 4:00 pm Post subject: Re: Block sanding long Bus panel |
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col1600 wrote: |
Hi all.
I'm not a pro. But am not an amateur body guy. Restored various vws with a very good quality paint finish. My goal in every build is to get all my panels lazer straight with hours and hours of priming, guide coat, block sanding.... Repeat. But never has a single panel gave me so much hassle to get straight. I'm restoring a 72 deluxe bus and the long panel is killing me to get straight. I've used long dúra blocks, home made long plexi blocks air sander.and I just can't nail this panel. I skimmed the complete panel 40 80 120ed it down and still I have a small wave directly inlíne with the reinforced bars behind the panel. The problem I'm finding is is that this panel is sooo easy to flex, that when I'm sanding it must be flexing even tho I'm not applying and excessive force to the panel. I'm cutting with 40 and 80 so not polishing the high build. Has any one reinforced the rear of the panel in order to stop the flexing. Has anyone ever sprayed expanding foam to the inside of the panel to hold in place.
Any suggestions would be helpful. Most of my problem comes down to being OCD over the top. I sprayed the panel in some spare 2k gloss black to see how far off the mark I was. And only I could see the imperfection in the panel. |
Sounds like the panel has stretched, try shrinking it a bit to tighten it up. _________________ Go Reds! Smash state!
Retirement is here!
1956 Ghia
1959 SO-23 Westfalia
1960 double cab
1960 Baja Bug
1963 stretched double cab
1962 Golde sunroof Ghia
1963 356 B coupe
1963 Notchback
1967 21 window less rusty now |
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col1600 Samba Member
Joined: October 07, 2011 Posts: 62 Location: Ireland
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Posted: Tue Sep 28, 2021 1:37 am Post subject: Re: Block sanding long Bus panel |
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The panel was never damaged. I bare metalled it to start a fresh. So shouldn't have any stretching issue... I've seen longer panels than this on other vehicles that are super straight. Never had a prob before.
Here's my fasty I restored with 6 months of.bodywork. All panels straight as a die... |
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Braukuche Samba Member
Joined: September 03, 2004 Posts: 10991
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Posted: Tue Sep 28, 2021 8:48 am Post subject: Re: Block sanding long Bus panel |
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Doesn’t have to be hit to stretch, the vehicle is decades old, butts in parking lots have bumped up against it, it’s vibrated and shook for thousands of miles…something is causing it to oil can which isn’t normal. A little bit of strategic shrinking should tighten the panel so you can block it without give. _________________ Go Reds! Smash state!
Retirement is here!
1956 Ghia
1959 SO-23 Westfalia
1960 double cab
1960 Baja Bug
1963 stretched double cab
1962 Golde sunroof Ghia
1963 356 B coupe
1963 Notchback
1967 21 window less rusty now |
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