TheSamba.com :: View topic

Sun Nov 04, 2007 1:35 pm

I am restoring a 77 westy and have finished some body work on various areas of the body. The dents I repaired were hammer and dolly'd then I did a skim coat of "Rage" filler to finish them off. The areas have been sanded and I just want to protect them for a while until I have the car painted professionally. It will probably be a month before it gets painted. I would like to spray primer on these areas so I can see if anymore bodywork is needed, hard to tell without primering it and doing some sanding again. I would prefer a spray can but I guess I could always roll it on if that would be better.

Any help is appreciated!

I do plan on buying a spray gun soon but since the car will be primer/paint professionally I just want to have the spots primered so they are protected for the next month and to help me see the surfaces better that I have reworked to see if they need further working!

Sun Nov 04, 2007 9:13 pm

Some years ago, I sprayed some Krylon enamel rattle can paint, no primer, over the new right and left side rockers and corner panel that I had welded on my bus. It's been good at blocking out moisture and you can use it for your guide coat when you are ready to do some more sanding.
Unless it is waterproof, like epoxy primer, don't use primer paint to cover the filler while you store it. Filler will soak up moisture and needs to be protected.

Mon Nov 05, 2007 8:38 am

Some relatively inexpensive epoxy primer you could mix up in small batches and roll on would do what you need.

Try some PPG "OMNI MP 170"...

Mon Nov 05, 2007 9:30 pm

Found the omni 170 locally! Thanks Guys!

Mon Nov 12, 2007 3:11 pm

Just tried out the omni mp170 this weekend and I have a question. I noticed that when i apply the mp170 with a roller there are tons of tiny bubbles throughout when applied to the bus (bus was properly prepped using a ppg degreaser). I thought the bubbles would evntually dissolve but they dried on there like that. They easily sand with a bit of fine sand paper. Basically I am using this to cover bare metal so I am not too worried about the look but I would like to know however what causes or caused this.

I mixed the primer according to the directions which stated 2:1. I used two of the mp170 for every 1 of the mp175 (catalyst). Soon I will be using a spray gun and will hopefully be able to eliminate these problems!

Mon Nov 12, 2007 3:24 pm

What kind of roller? the foam ones leave alot of tiny bubbles... a "short nap" fabric rollor should not.

You could try thinning the 170 with a small amount of MP 185 or 186 reducer ( even though the directions don't call for it you can add a small amount for thinning purpose)