Just sprayed the first nitro coat....so can anyone identify what went wrong here ?

[tweeet]

Ok...so I've gone thru the usual process in the build here.
I've sprayed the first coat of clear...and the paint has more or less been dissolved underneath.I've contacted the guy who sold the aerosol,which is supposed to be nitro based,and I've sent him the remainder of what's left in the can back to him to check it out.I've got an idea of what's up but I'd like to know if anyone on the forum has had a similar experience.
It's not the end of the world...I'll just sand back lightly and start the colour and clear process again when the reason is explained,it just sets me back a week.

[ThaLowEndTheory]

The only time I've seen something like that is when using incompatible products. Like spraying wet coats of nitro onto enamel. It wrinkles up. Hard to see exactly what's going on in the pics. All I can tell is that it's not good. Sorry for the headache.

[JohnPurdy]

I'm no expert that for sure but it could be fish eye I can't tell from the photo but check out this link:
http://books.google.com/books?id=dJV...%20eye&f=false

Even if thats not what it is the link may help you figure it out.

John

[Sawarow]

It does look like fisheye. Silicone contamination can come from odd things. For sinstance, the backing paper on doublestick tape is usually coated with silicone so it doesn't stick too well to the tape. Place the tape on a surface and it can contaminate the surface.

I do everything I can to ensure that I do not use any silicone (that I know of) materials where I build my guitars. I don;t use any silicone sealer, or lubricants.

What kind of paint did you use?

[tweeet]

I had a test piece of ash which I coated with the paint 3 weeks ago,no grain filler,no sealer,just 4 coats of paint.I put some nitro on it and it did the same thing...just acted like it was paint stripper and removed the paint basically.I'm speculating that it's not cellulose based paint,maybe acrylic or similar for it to react like this.Anyway he should get back to me early next week after testing the remainder of the can.

[Shepherd]

That's not fisheye. Looks like the lacquer thinner in the clear got thru to the sealer coat or the colour coat doesn't place nice with lacquer. How heavy a coat of clear did you apply? Wrinkling is typically the result of a solvent attacking a substrate. If you go too heavy a coat the solvents will soften the previous coats and cause them to reflow causing those wrinkles.

[tweeet]

Originally Posted by Shepherd

That's not fisheye. Looks like the lacquer thinner in the clear got thru to the sealer coat or the colour coat doesn't place nice with lacquer. How heavy a coat of clear did you apply? Wrinkling is typically the result of a solvent attacking a substrate. If you go too heavy a coat the solvents will soften the previous coats and cause them to reflow causing those wrinkles.

The coat wasn't any different to any other.The gun is set up the same and lacquer and thinner 50% each.The test piece was just straight lacquer as I thought yeah....could be the thinner...but that removed the paint just as quick and just as destructive.

[boris bubbanov]

I agree with Shepherd, that is not fisheye, at least from what I can see.

I'm thinking the color coat has some non-lacquer properties to it, where it hasn't got enough retained solids other than the pigments, and so "real" lacquer when applied activates it and basically acts like a chemical stripper.

In the past the paint manufacturers were constrained by the knowing that many customers were gonna shoot lacquer over it. Now they don't care, since many folks are switching or have switched to water based top coats, or at least non lacquer top coats.

The only solution I can think of, to use the same products, is to apply a fine mist of lacquer over a long time, slowly building a barrier or film to protect the color coat. Wet coats look best, but a wet coat will do this more than a dry one would, I'm thinking.

[KY-TwangBanger]

Agreed - looks like incompatible products. You get the same thing spraying laquer over enamel without a good sealer. The "hot" laquer thinner dissolves the enamel.

[tweeet]

Well the guy has got back to me...and surprise,surprise says that he's tested the remainder of the can and sprayed clear over it and there's nothing wrong with it.I think I'll just buy another can from somewhere else.Time is ticking on and I need to get on.

[pullchord]

Ain't refinishing fun??

[tweeet]

Originally Posted by pullchord

Ain't refinishing fun??

Please....don't rub it in......................or respray it on

[Sarrkazztic]

looks like fisheye to me.

[Meekster]

Do you have a water trap on your spray rig?