What grit do I use to wet sand base?

[RayH]

Guys need a little advice. I sprayed my car yesterday and got trash in one of the quarters. It has 3 coats metalic base and I want to wet sand it and apply 2 more coats. What grit should I use?

 

[dhutton01]

How much trash? I just give nibs a quick rub with an 800 grit sanding sponge dry.

 

[El Toro]

My nephew is a painted at a Audii shop and he hits his base with 800 dry sponge like Don said to de nib most of his work then re base $80,000 booth and sill dust but high volume shop

 

[RayH]

Thanks guys, I don’t have one of those. Will Super Assilex 800 and a soft pad work?

 

[RayH]

As for the trash not to bad but after posting and getting a better look it also appears to have inconsistent spots that look flatter if that makes sense.

 

[RayH]

Different sheen in the color.

 

[dhutton01]

Assilex should be ok. What reducer did you use? Is humidity high?

 

[RayH]

Slow reducer ( SPI )and low humidity, 80 deg temp but my booth was around 90 deg

 

[dhutton01]

I don’t think a difference in sheen will hurt anything but hopefully one of the pros will weigh in.

 

[RayH]

Thank you for all your advice!

 

[RayH]

I will sand it with 800 Super Assilex 800 and a soft pad , then shoot 2 coats of base.

 

[dhutton01]

Don’t go to town on it. Just swipe the nibs. No need to sand any more than to knock down the nibs.

 

[RayH]

Yes sir

 

[RayH]

Don, one other question. Once I de nib is there a re-coat window. I know unsanded base can go for awhile.

 

[dhutton01]

Not really. Same as unsanded base imo.

 

[RayH]

Thanks, and buy the way the settings you recommended for the Iwata 400 for spraying base were spot on