More paint questions

crvc · Post by **crvc** » Mon Aug 17, 2009 10:04 am

My latest problem was the paint producing fisheyes. The Napa guy ordered fish eye eliminator, an additive for the paint. Last night I tried it on a small area. I watched and didn't get fish eyes. But during the night the painted area developed orange peel. I read somewhere that fish eye eliminator can do that. Also my compressor wasn't staying up to pressure. I didn't realize I had bumped the wall socket and turned it off.

Now I'll have to sand that part for the fifth time. I'm guessing (hoping) the compressor losing psi prevented atomization so I was spraying gobs of paint. BUt what if that's not the problem? What else could cause the orange peel?

TIA,

kevin

jg · Post by jg » Wed Aug 19, 2009 2:27 pm

It is my understanding orange peel is from too much air.

Too close or too high of pressure.

crvc · Post by **crvc** » Wed Aug 19, 2009 3:17 pm

I ordered fish eye eliminator, an addiditive for the paint. It stopped the fish eye but caused orange peel. I ordered oversize hinge pins and the they arrived today. I took them down to the machine shop to be pressed into the doors. Talking with the owner, he mentioned I might need a sealant before I paint.

I went from there to the Napa store and asked about sealants. The owner there doesn't think sealants are necessary. I saw a paint gun on the shelf that looked a lot like mine. That got us talking about paint guns and ultimately he said I'm using too much psi at the gun. I need 8-10psi, not the 35psi that I've been using. Perhaps that's my problem?

Sneaks · Post by **Sneaks** » Wed Aug 19, 2009 4:04 pm

Everything I've read, fisheyes are caused by contamination. The only time I've gotten fisheyes painting is when I neglected my water trap.

crvc · Post by **crvc** » Wed Aug 19, 2009 4:14 pm

He asked me how I'm prepping the car. I said I wash a section with dishsoap and water, dry it then spray Bug and Tar remover, wipe it off then rub with a tack cloth. He thought the Bug and Tar remover could be the culprit. I wondered if there's any silicone in the tack cloths?

Post by **david58** » Wed Aug 19, 2009 4:16 pm

crvc wrote:He asked me how I'm prepping the car. I said I wash a section with dishsoap and water, dry it then spray Bug and Tar remover, wipe it off then rub with a tack cloth. He thought the Bug and Tar remover could be the culprit. I wondered if there's any silicone in the tack cloths?

Why do you use bug and tar remover.........................................

crvc · Post by **crvc** » Wed Aug 19, 2009 4:27 pm

Someone somewhere said to use it as a cleaner before painting. I was just following orders....

Sneaks · Post by **Sneaks** » Wed Aug 19, 2009 4:35 pm

That could be your issue. Tack cloths used to have linseed oil on them, dunno about now. I'd point my finger at the bug and tar remover. I use straight acetone and that works well for me. You need to make sure whatever you use doesn't leave any residue. An old timer I know uses vinegar.

crvc · Post by **crvc** » Wed Aug 19, 2009 4:46 pm

Sneaks wrote:That could be your issue. Tack cloths used to have linseed oil on them, dunno about now. I'd point my finger at the bug and tar remover. I use straight acetone and that works well for me. .

Is that the same as paint thinner?

Sneaks · Post by **Sneaks** » Wed Aug 19, 2009 6:49 pm

crvc wrote:
Sneaks wrote:That could be your issue. Tack cloths used to have linseed oil on them, dunno about now. I'd point my finger at the bug and tar remover. I use straight acetone and that works well for me. .
Is that the same as paint thinner?

Depends on the thinner. Usually Lacquer thinner is acetone but most of the stuff you that is just labeled "Paint Thinner" is a blend. You can get straight acetone at most hardware stores and paint stores in the quart or gallon. I got my last gallon on clearance as a discontinued brand at a cosmetic supply house since it is used in salons by nail techs.

MinamiKotaro · Post by **MinamiKotaro** » Wed Aug 19, 2009 7:29 pm

I wipe down parts with VM&P Naptha as a cleaner.

raygreenwood · Post by **raygreenwood** » Thu Aug 20, 2009 5:32 am

Naptha works great. MEK works great but is a little rough on filler.
Acetone is too weak to use on certain grease and oils.
Laquer thinner is most certainly NOT Acetone. Laquer thinner is a blend of several solvents..of which acetone can be one. Ray

Sneaks · Post by **Sneaks** » Thu Aug 20, 2009 9:08 am

raygreenwood wrote:Naptha works great. MEK works great but is a little rough on filler.
Acetone is too weak to use on certain grease and oils.
Laquer thinner is most certainly NOT Acetone. Laquer thinner is a blend of several solvents..of which acetone can be one. Ray

I'll defer to you since you are more knowledgeable than I am (honest opinion, no sarcasm intended or implied).
That being said, the only ingredient listed on the brand of 'lacquer thinner' I get from my local Rocky's is 'acetone.' It is also the only active chemical listed and no inert chemicals listed so as far as this generic product, it appears to not be a blend.

sideshow · Post by **sideshow** » Thu Aug 20, 2009 9:47 am

I have all ways called it "Prep Sol" to wipe down pre-paint and pre-tact on bare metal/filler/prime/scuffed surfaces.

PPG calls it MX190 "cleaner" (my current default)
Klean-strip (brand) calls it "Prep-All"

No science here, it was just the way I was shown

Post by **david58** » Thu Aug 20, 2009 9:48 am