Is it OK for me to stop at 2500 grit before buffing?

7

76_TypeLT

I have been wet sanding (sprayed SPI UV clear) using 1200/1500/2000/2500 grit paper. Should I go ahead and sand to 3000 grit or would it be OK to begin buffing after sanding to 2500? I don't have any 3000 grit but am not opposed to buying some if it would mean significantly better results.

I will be using the Chemical Guys kit with 32/34/36/38 and the black/white/orange pads.

thanks!
 
shine;n74734 said:
Question is why would you ?
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Lazy I guess. I find no problem removing 2000 grit scratches when buffing. However I still use a twisted wool pad for my first round of buffing so that might make the difference.
 
shine;n74734 said:
Question is why would you ?
Click to expand...


Simple reason is I have been using a specific brand of sandpaper which I like very much, but they only go to 2500 grit. It's a quality adhesive backed paper but unfortunately they don't make 3000 grit.

Thanks for the replies, I appreciate the input.
 
First off adhesive backed paper is a thing of the past . Unless you find amsoft interface pad for adhesive you can have problms. But the difference between 2500 and 3-4k is a tremendous leap. Keep in mind that a buffing pad can destroy paint in a heart beat . The less time you spend buffi g the btter .
 
I only use adhesive backed paper for doing body work and the first pass for doing an overall. After that I wetsand by hand with a variety of blocks. For cut and buff, I wetsand with blocks only and unless it is something special I stop at 2k. You also have to keep in mind not to sand the clear too thin.

How many coats did you put on?

I also cut with wool.
 
If we are talking about the common vehicle it will be buffed for delivery the next day, you just don't have time to let them sit, but with those special jobs I let them sit at least a week before I touch them with the 1st round of wetsand and depending on how particular the job is it can take a week of wetsanding (letting each grit breath out) before the buffer comes out. So the clear can be a couple weeks old (for me) before the buffing procedure.

I will say the fresher the clear the easier the buffing but you will have a better smooth as glass finnish (like settled water) the longer it sets before buffing.
 
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