I sort of had an accident tonight.
Working on the trunk lid, I had less clearcoat to work with than I thought I did. WAY less, as it turns out,
and I got down to the grey primer in a spot that WILL be noticed.
So I sanded the area down (actually, the entire back surface of the trunk lid) which is what I was doing
anyway, mixed up some more black ChromaBase, masked off the rest of the back of the car quickly,
and shot the black.
See spot run. See spot go long!
Crap.
Try to sand out the run after it dries.
Crap, it ain't working. The finish is just too rubbery and rolls up like boogers.
Crap again.
Lacquer thinner. Check. Clean rags. Check. Solvent-resistant gloves. Check.
Wipe off fresh black paint using lacquer thinner on rags. Get it clean. Do not stop to
think that you're poisoning the uncured urethane paint with aggressive solvents. A ticking time bomb
waiting to go off under the new paint.
Apply a THIN layer of black. Looks good...until the swarm of bugs lands in it and they all decide to do the
backstroke for about 100 yards or so. (In bug yards...that's about an inch for you and me.)
Crap yet again.
Attempt to remove bug carcasses by sanding them out.
Crap, no dice. Same as last time. Gum instead of paint, doesn't sand well.
Lacquer rag time.
Really take some time trying to be sure the surface is totally clean and well prepped with
a pristine rag with fresh clean laccuer thinner. All the bugs in the area are dead from the
paint fumes by now so I don't have to worry about them.
I back off the gun settings to give a finer mist and a slower rate of transfer, to really have some
control and lay down a THIN coat of black.
I shoot it.
I step back, almost ready to declare success. Looks good.
Within 15 seconds...oh crap, crap, crap!!! MAJOR finish reaction, over a section about six inches long
and almost two inches wide. The "old" finish is bubbling up through the fresh black like some awful new
strain of cancer. More specifically, the reaction is down in the primer layers.
Fudgesickles!
I've seen ChromaBase react like that before but I'd forgotten about that. It doesn't like being shot over
urethane if that urethane is reasonably fresh and has a lot of solvents in it. Which I had just put into it
with my repeated attacks with a lacquer soaked rag.
There's no chance to salvage this with anything but a full sand-back on the trunk lid, all the way to the
primer if not even further, into the original paint. (Which is mostly still there.)
I figure it's set me back by at least five days.
But what the heck...I have no schedule to meet. I'm just taking all the time I need to do the job as well
as I know how. And though I can't pick up more lacquer thinner (I'm out, practically) until Monday, I can
still continue to work on the finish on the rest of the car.
This slows me down but won't stop progress.
CJ
Attempts to