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let's talk sanding

Wet sanding and buffing; I am one of the few who loves doing it. I once had almost 80 hours in doing a show car; start with 800 3M and a hard stick of your choice, then 1000/ 1500/2000 meguiars is the only paper i will use other then the 800 3M. All paper soaks in water for 24 hours prior to using in separate pails. I don't want a 800 grit stones getting picked up while i'm using 1000 grit and so on. I also use a couple drops of dish soap in the pail. After i finish with the 800 i switch to a soft block' i am done trying to get it flat. Now i am just trying to get the prier sand scratch's out finely ending up with only 2000 grit scratches to buff out. Some times depending on the color i will use 3M powder guide coat in between each grit change. I tried the DA thing once. for 10 min; i ended up throwing it all in the trash!!!!
I did quite a bit of practicing on a test panel, but not having very good luck with my sanding technique so far. I am using Maguairs paper. I am doing fine at back to a gloss, but I continue to have sanding scratches (really shiny scratches). Perhaps my Univeral Clear isn't cured enough, or my sanding technique isn't right. I am finding the paper has clear stuck to it after just a few strokes. It is about 5 week old universal clear (No UV exposure yet). My car has had a few days in the sun, but not the test panel I'm working on.

1st question, how big of a block should I use? (hard block & soft block)
2nd question, how much pressure? (Hard block steps, soft block step, and Trizact by hand)?
 
I did quite a bit of practicing on a test panel, but not having very good luck with my sanding technique so far. I am using Maguairs paper. I am doing fine at back to a gloss, but I continue to have sanding scratches (really shiny scratches). Perhaps my Univeral Clear isn't cured enough, or my sanding technique isn't right. I am finding the paper has clear stuck to it after just a few strokes. It is about 5 week old universal clear (No UV exposure yet). My car has had a few days in the sun, but not the test panel I'm working on.

1st question, how big of a block should I use? (hard block & soft block)
2nd question, how much pressure? (Hard block steps, soft block step, and Trizact by hand)?
Good Qs. If the paper has clear stuck in it or "gumming up" it has not cured all the way. Get it out in the sun for a few days.
I use a hard block when sanding with 800 I have mostly acrylic hard blocks in various shapes and sizes depending on the shape of the panel you are working on. Sanding technique...always criss-crossing . After i feel like the panel is flat enough i switch to a 3m black firm sponge pad to finnish up through the various grits.
Medium pressure from start to finnish all by hand with water Also if you are pushing to hard it will leave deep scratches You can also use 3M guide coat in between the grits. Hope that helps
 
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