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Primetime
07-20-2003, 05:44 PM
On MDF if you plan on painting the box, should you sand the primer before you paint it? OR should you Paint directly over the primer then sand, then paint, then sand until the desired smoothness occurs?

Thanks
Dave

P.S almost done with the box 3.4cubes tuned to 32 for my new Magnum...

paikiah
07-20-2003, 07:19 PM
I think you can do both... ask auroraV8, he painted the top of his box to a funky color and looks really smooth. :)

evo2k3
07-20-2003, 07:40 PM
On MDF if you plan on painting the box, should you sand the primer before you paint it? OR should you Paint directly over the primer then sand, then paint, then sand until the desired smoothness occurs?

Thanks
Dave

P.S almost done with the box 3.4cubes tuned to 32 for my new Magnum...

do a good job priming (no runs ect...) and just hit it with some 500grit real quick...more sandin during the paint proccess than priming.

Radar
07-22-2003, 01:11 AM
They make 500 grit?!?! Ive always used 400 grit for my final sanding on projects, and I figured that was the best you could get.

kicker
07-22-2003, 02:26 AM
They make 500 grit?!?! Ive always used 400 grit for my final sanding on projects, and I figured that was the best you could get.

400 is rough j/k they make sand paper that it goes up 1500grit

ramos
07-22-2003, 10:10 AM
They make it all the way up to 3600 grit emery paper and a little beyond for special purposes. I usually wet sand the primer with 500 grit. Just to make sure everything is baby butt smooth. :)

maylar
07-22-2003, 01:08 PM
You need to scuff the primer up so the topcoat has some tooth to stick to. I use the grey scuff pads (like scotchbrite) which are equivalent to about 400 grit.

Primetime
07-22-2003, 11:29 PM
You need to scuff the primer up so the topcoat has some tooth to stick to. I use the grey scuff pads (like scotchbrite) which are equivalent to about 400 grit.


Whoa... one person said to wet sand it with 500 to make it baby butt smooth, the other says to hit it with some 400 to make it a lil rough... what is it?

D

ramos
07-23-2003, 05:26 AM
What I mean is to remove any drips or runs. Or any little minor imperfections in the primer before you start to paint. So they don't show through the paint. The 500/400 grit is doing the same thing. It's actually roughing up the primer for the paint to stick to. :)