P

pants007

Active Member

• May 17, 2015

• #1

Hey Guys! Im starting to sand down my 90 panels for a re-paint i have some areas that have gone through to the alli, that will need etching.

Anyway what grit sand paper should i be using to key the paint surface?

Also should i prime the surface before putting base coat on?


cheers...

 

danny6801

Well-Known Member

• May 17, 2015

• #2

Depends on how deep you want to go but I would say a 120 grit then gradually going up. Plus I would definitely prime it before you paint.

 

200

Active Member

• May 17, 2015

• #3

If you are just rubbing down to recoat then i would be using 320grit and scotch brite pads.Where the corrosion is start with 120 then up and i use an acid etch wash primer,i find it better than just an etch primer. So acid etch,primer then top coat.

 

P

pants007

Active Member

• May 18, 2015

• #4

cheers guys! what colour scotchbrite? i have gray at the moment!

 

P

pants007

Active Member

• May 18, 2015

• #5

Sorry guys another question! I need to fill some low spots and plan to use u-pol fantastic. does the filler need to go on bare metal? and what primer should go on top on the filler?

thanks....

 

200

Active Member

• May 18, 2015

• #6

Grey is fine but red would be better. As long as the filler is for aluminium it will be fine and just use your normal primers.

 

Station House

Well-Known Member

• May 18, 2015

• #7

Dinitrol 6030 Metalised Body Filler is good stuff imho