reclear
- Thread starter shine
- Start date
When I did my black 34 this summer, I used a National Abrasives red scuff pad on the hard to get areas before my second clear session. I scrubbed the car with Dawn and pressure washed it twice before two trips over with waterborne.
Somehow the fibers from that red scuff pad must have gotten imbedded into the clear, because with just the right light conditions, I can see most places I used that scuff pad.
Lesson learned: use a name brand scuff pad and clean REALLY well before reclearing. I doubt any of this helps you, Shine, but I thought I would share anway.
Somehow the fibers from that red scuff pad must have gotten imbedded into the clear, because with just the right light conditions, I can see most places I used that scuff pad.
Lesson learned: use a name brand scuff pad and clean REALLY well before reclearing. I doubt any of this helps you, Shine, but I thought I would share anway.
F
form406
wet sanded? washed with what? ive had similiar problems using tap water. i real close look with a magnifying glass might let you see what contamination is....
F
form406
the only thing it could be is contamination in the sandpaper that is embedded in the clear?
Shine and i talked about this for an hour and he did everything perfect, so none of this makes any sense, that is why I asked him to post as we may all learn something here and it only did it on part of two panels rest of car is perfect and just plain beautiful.
ALL ideas are welcome and maybe one will ring Shines bell, so we know what went on, as I'm lost.
ALL ideas are welcome and maybe one will ring Shines bell, so we know what went on, as I'm lost.
F
form406
i love the spi csi crew! i learned so much here and had that failure feeling quelled here as well. perhaps a magnifying glass may help to get a real close look? im curious if it gets a couple weeks of uv from the sun what will happen to it, maybe fade together a bit more? it almost looks like it came close to the base...but pics are hard to tell...
B
Bob Hollinshead
Never had that problem but I can see the scratches at the edge of the lid in your photo. How old was the first application of clear before you recleared it?-shouldn't make a difference but just wondering if it could be solvent related. Did the first application of clear lock up well-no hint of any cure problems? Is this the only spot on the car? Could you have simply missed that spot during the cleaning and that's a small amount of sanding residue in the bottom of the scratches?
I remember talking to Eric about his scuff pad issue-never had that happen either. I have seen on occasion contamination issues though between applications of clear-one I remember well: Hugger Orange 69 SS Chevelle, based, striped, cleared, sanded, recleared-then noticed all these faint little dark swipes. I had used a rubber squeegee when I sanded the first app of clear and it transfered a little rubber onto the clear that was not noticeable during the sanding stage, cleaner didn't remove it but the second app of clear made it visable for anyone looking close......no more rubber squeegees for me during that stage of the game.
I remember talking to Eric about his scuff pad issue-never had that happen either. I have seen on occasion contamination issues though between applications of clear-one I remember well: Hugger Orange 69 SS Chevelle, based, striped, cleared, sanded, recleared-then noticed all these faint little dark swipes. I had used a rubber squeegee when I sanded the first app of clear and it transfered a little rubber onto the clear that was not noticeable during the sanding stage, cleaner didn't remove it but the second app of clear made it visable for anyone looking close......no more rubber squeegees for me during that stage of the game.
O
Oramac
Shine, That phenonomen has been happening everywhere (me)lately, he-he. Seriously, it seems that the other manufactures of paint, primer, bondo etc are thinning the products out more instead of raising the prices, the film build isn't there. Seems like you used to get good primer build over all grits with 2 coats, now it takes 3, even with polyester primers. I know by your work that you are as careful as anyone. Could it be that accidently, a piece of 220 got used.? Been there before. Had to do some stuff over today, cause of them damn scuff pads, looks like pubic hairs in the base/clear. Won't use them again. Craig
Jim C
Oldtimer
i have been battling this for years. its really only noticeable on dark colors and especially in direct sunlight. it boils down to, too coarse a sanding scratch and dirt or even moisture can be trapped in. i am always blocking my clear with 400 to get it and my graphics flat. i used to just go ahead and clear over that but straight 400 is a problem and you'll always run into this problem. i now block with 400 then smooth out all my sanding scratches with 600 da and a soft pad. i know you said you used 800 which is fine but is it possible there is a coarser scratch in the area you are having a problem with? solvent wax and grease remover does noting to get away the dirt that causes this. you need waterborne stuff. while the 700 is good, its not the greatest for this either. i have found the ones that are of the soapy type to work the best......hok's kc-20, presta makes one, or plain old glass cleaner. they are all surfactant base and really help. i always used kc-20 in the shop but now i use a mix of the zep glass clear concentrate from home depot and spi 700. mix it at about 3:1. way cheaper that hok and works fantastic. making sure you don't have any deep scratches for the dirt to get caught in. this is key and that will make it easier to clean the surface as well not allowing dirt or moisture to be trapped in there. also wait awhile after wiping to do your clear to make sure any moisture isn't clouding things up.
Jim C
Oldtimer
Yup, i bet most of us have had this issue and never really knew it. Black its way easier to see. I found a spot like that on that 41 caddy i did. Never saw it until a year and half later when the sun was hitting it just right. Big old cloudy spot. Luckly i am the only one that knows its there and its way down low and will be covered by the bumper. Since switching to finer grit finish between clear layers i have not had the issue.
