what grit sandpaper to use when wetsanding prior to paint chip repairing?

P

phazeon

New member
what is the ideal grit to use when wetsanding a paint chip (ranges in all size) for repair?



I''ve read that 2000 grit and 3000 grit is ideal switch up from several people



while others tell me that I could even use very harsh 600 grit as well.



can somebody verify me on this before I tackle on the process?





one more quick question: as far as the "wetsanding" actually goes.. do you guys usually put the sandpaper in the water overnight before using it?
 
Yes, 2000-3000 is typical. I would not suggest 600, that will more then likely cause perminent damage.



Soak it for an hour or so first if you want, but for just a chip or two I wouldn't worry so much about that....
 
phazeon said:
what is the ideal grit to use when wetsanding a paint chip (ranges in all size) for repair?



I''ve read that 2000 grit and 3000 grit is ideal switch up from several people



while others tell me that I could even use very harsh 600 grit as well.



can somebody verify me on this before I tackle on the process?





one more quick question: as far as the "wetsanding" actually goes.. do you guys usually put the sandpaper in the water overnight before using it?
Click to expand...





the longer the better
 
600 is really only for major body work where primer needs to be flattened. I like 2000 grit if I'm going to be removing marks via rotary, 3000 grit if I need to use a dual action.
 
ggk said:
u dont really sand prior. to filling

u clean it with alcohol then fill it then sand.
Click to expand...



Sometimes I do sand before filling, to get the chip prepped the way I want it (e.g., rust removal often leaves things sorta nasty and some chips have compromised edges that should be knocked back to solid paint). Last time I did this, I used some 1500 before I started filling it with paint.
 
Accumulator said:
Sometimes I do sand before filling, to get the chip prepped the way I want it (e.g., rust removal often leaves things sorta nasty and some chips have compromised edges that should be knocked back to solid paint). Last time I did this, I used some 1500 before I started filling it with paint.
Click to expand...



I have a follow-up question to this. I just picked up some 1500, 2000, and 2500 sheets from ADS and I want to give it a try for the first time on my bumper. The edges on the bumper are definitely compromised but my thought was to fill them and then sand. I figured it would be easier to fill with the edges left in tact. Would you knock all the edges back first so that it would be completely smooth and then apply the touch up paint? Thanks.
 
DTailN said:
I have a follow-up question to this. I just picked up some 1500, 2000, and 2500 sheets from ADS and I want to give it a try for the first time on my bumper. The edges on the bumper are definitely compromised but my thought was to fill them and then sand. I figured it would be easier to fill with the edges left in tact. Would you knock all the edges back first so that it would be completely smooth and then apply the touch up paint? Thanks.
Click to expand...



As long as the edges of the damaged areas still have good paint adhesion and no weird damage you should be OK. Yeah, they "hard edged" type of damage can be easier to work with.



I've never had any problems with the touchup paint and sanded areas though.



This is one of those things where one approach works one time and the other works some other time.
 
You must log in or register to reply here.
Back
Top