guide coat repairs

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  • November 30, 2010 at 12:30 pm #25678

    Well today I did some more sanding… wanted to see how good it looked so I used 600 wet to get a little reflection. Turns out it looked really nice but has a tiny jog in the reflection. If you look down the side normally it looks straight but if you look at something across the yard you can see the object has a little bend to it.

    I tried to get it out by sanding more but couldnt get it out. I was doing the X pattern while sanding. I decided to try something a little different and sanded in a circular motion with a 12″ block from top to bottom in one motion working across the whole panel and it came out perfect.

    Has anyone else sanded that way before? I always use to sand in an X pattern but after I did it this way the other door and quarter came out perfect too.

    Also, whats your guys input on sanding with 220,320,600 wet and using sealer right before paint? pros or cons?

    Talked to a local guy that stops at 320 and seal coats it every time before painting. I have always sanded 320 400 600 and painted it.

    December 1, 2010 at 6:31 am #25695

    [quote=”Jinx” post=15792]Well today I did some more sanding… wanted to see how good it looked so I used 600 wet to get a little reflection. Turns out it looked really nice but has a tiny jog in the reflection. If you look down the side normally it looks straight but if you look at something across the yard you can see the object has a little bend to it.

    I tried to get it out by sanding more but couldnt get it out. I was doing the X pattern while sanding. I decided to try something a little different and sanded in a circular motion with a 12″ block from top to bottom in one motion working across the whole panel and it came out perfect.

    Has anyone else sanded that way before? I always use to sand in an X pattern but after I did it this way the other door and quarter came out perfect too.

    Also, whats your guys input on sanding with 220,320,600 wet and using sealer right before paint? pros or cons?

    Talked to a local guy that stops at 320 and seal coats it every time before painting. I have always sanded 320 400 600 and painted it.[/quote]

    The sanding direction depends on what you are doing. “X” sanding is usually used for body filler and blocking primer. The “X” is more of a starting point: depending on the shape of the panel you may want to sand in different directions.

    Final sanding (if not done with a DA) is often done in a straight line (in line with the body…often front to back). Sanding in a circular motion often leads to deep scratches that can be hard to hide.

    As far as what you finish with before sealer, read the tech sheet. Most sealers will cover 400 grit (some finer, some coarser). Some may cover 320, but in 2 coats. I usually finish in 500 on a DA (with an interface pad) before sealing.

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