Solvent Popping in Fresh Paint
Solvent Popping in Fresh Paint
After inspecting the brand new paint job on the 1928 Model A out in the garage I found at least one place with signs of solvent popping.
Solvent popping is when the reducer, (solvent), which is used to thin the paint to make it sprayable in a paint gun is changing from a liquid to a gas. As this change takes place, the solvent tries to escape and pops through the top film of paint leaving a tiny little crater or what looks like a pin hole.
At least that's the nutshell explanation.
Here's a couple pictures I took to show solvent popping. It is located just above the opening to the rumble seat on this Model A.
http://www.autogeekonline.net/galler..._Paint_001.jpg
http://www.autogeekonline.net/galler..._Paint_002.jpg
http://www.autogeekonline.net/galler...Paint_002c.jpg
For reference, it's just above the handle you see on the top of the rumble seat in the back of the car here,
http://www.autogeekonline.net/galler..._Coupe_010.jpg
:)
Re: Solvent Popping in Fresh Paint
What can be done to this other than a repaint?
Re: Solvent Popping in Fresh Paint
Mike thats too bad pretty serious defect. I'm sure you'll pull some magic and make it look better.
My first motorcycle helmet I painted I used too fast a solvent and ended up with this. Nothing sandpaper and a mulligan won't fix, lol.
I'm glad mine was just a helmet, that ride looks like fun to work on.
Re: Solvent Popping in Fresh Paint
Quote:
Originally Posted by
DaGonz
What can be done to this other than a repaint?
A person can try wet sanding or dry sanding, maybe even try a CarPro Denim pad and if the actual "pop" or crater is only in the top surface it can be removed or at a minimum improved.
"You never know what you can do until you try"
If the pop created a tunnel from where it originated to the surface then grinding on it will just uncover more of the tunnel and remove precious paint needlessly.
These look like they will fix.
:)
Re: Solvent Popping in Fresh Paint
Quote:
Originally Posted by
ken tuep
I have used a UV clearcoat in the past to dab into the pinholes , depending on how many. Then sand and polish back up.
They don't look too deep though.
That's sound very tedious...
Hats off to you for tackling such a procedure...
:dblthumb2:
Re: Solvent Popping in Fresh Paint
Mike, I have them same problem on a freshly painted (about 120 days). bumper. Its like those on the Ford, except there are only two but they are bigger
Re: Solvent Popping in Fresh Paint
You run into this imperfection(s) when you rush flash times, usually in a production type scenario. Use the slowest reducers and activators you can get by with and extend the flash times on the p-sheet (product sheet), especially on hot and humid days. I push primers and basecoat flash times to their max, then hammer on the clear coats as they tack. These pops are on the very top (30 - 50%) of the clearcoat and often can be completely removed.