MP&C
Well-known member
Ed, just to clarify a couple of your points for those who may be interested in the process using the DA......
True, you'll need a Velcro pad for your DA, but that pad is only good for absolute flat panels. Try using it on rounded panels and you'll be leaving flat tracks in the clear. So in addition to that pad, you'll need a foam interface pad, which allows the abrasive disc to follow the contour of the panel, especially helpful on a vehicle like that 40...
The biggest difference between the DA method and the manual version by hand (no pad or block) is that fingers add pressure points through the paper that can leave "finger tracks" in the finish, which if deep enough could show up even after buffing. The DA, using a foam interface pad, would leave that front fender as smooth as a baby's ***, which will save even more time in buffing. I think I had some pretty bad paint defects to remove when I used this process, and had some pretty good results. You may want to show this to the owner, I think he'd opt for using the interface pad on the DA......
I'd say this process saved about 1/3 to 1/2 the time over wet sanding by hand (given the same end result) and with such a uniform finish at this point, saves time in the buffing process as well... As nice as that pearl on the 40 pops in the sun, this process and a good buffing would really do it justice.. 3M (and possibly Norton) has some good instructional videos on using this process, for anyone interested.. My local salesman for my autobody supplier actually came to my shop and showed me the process, so something else you could check on...
As for what you need to use these 1500/3000 discs they are mostly hook-and-loop (Velcro) based, so you'll need to buy a new pad ($15) for your DA.
True, you'll need a Velcro pad for your DA, but that pad is only good for absolute flat panels. Try using it on rounded panels and you'll be leaving flat tracks in the clear. So in addition to that pad, you'll need a foam interface pad, which allows the abrasive disc to follow the contour of the panel, especially helpful on a vehicle like that 40...
These are used on a DA using hook and loop pad, and a 1/2" thick interface pad. This pad helps the abrasive sheet to follow the contour of the panel. A perfectly flat pad would have a tendancy to leave flat spots in a crowned panel, where the picture below shows how the interface pad helps the abrasive follow the contour of what you're finishing.
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Good discussion gents! I thought he was using a block, but may have used his hand on some of those areas. None-the-less he only used 1500 then 3000 so it buffed out fairly easily. The 40 Ford was painted with production-quality paint and clear (Proform) .........
As for what you need to use these 1500/3000 discs they are mostly hook-and-loop (Velcro) based, so you'll need to buy a new pad ($15) for your DA. I found that the paint on the 40 was still soft enough that - although I had purchased a new Palm-DA for it - I decided it could be done by hand just as quickly. Perhaps next spring, when the clear has fully hardened, I may need the DA to knock the clear down at a reasonable rate!
Cheers!
The biggest difference between the DA method and the manual version by hand (no pad or block) is that fingers add pressure points through the paper that can leave "finger tracks" in the finish, which if deep enough could show up even after buffing. The DA, using a foam interface pad, would leave that front fender as smooth as a baby's ***, which will save even more time in buffing. I think I had some pretty bad paint defects to remove when I used this process, and had some pretty good results. You may want to show this to the owner, I think he'd opt for using the interface pad on the DA......
Here's your typical defects, dust nibs, slightly orange peely/grainy appearance..
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A quick once over with the 1500 grit Trizact on the DA highlights the areas needing attention quite well.
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Monitoring various defects through the process....
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After the 1500. Notice all the sanding scratches alongside the tape. It's all in the (lack of proper) prep....that was sprayed right over top of. And now I get to fix his work.
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After the 3000 grit Trizact. As nice as this is coming out, it shouldn't take too much effort in buffing (fingers crossed)
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Smooth as a baby's behind...
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All done with the 3000 here, time for the next fender...
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Comparison, before and after.....
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I'd say this process saved about 1/3 to 1/2 the time over wet sanding by hand (given the same end result) and with such a uniform finish at this point, saves time in the buffing process as well... As nice as that pearl on the 40 pops in the sun, this process and a good buffing would really do it justice.. 3M (and possibly Norton) has some good instructional videos on using this process, for anyone interested.. My local salesman for my autobody supplier actually came to my shop and showed me the process, so something else you could check on...
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I remember tossing them into the old wringer washer and run them through a few times then wring them out and let them dry.


Wonder if there was any off-key resonant effects! ?!




