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The DEMONX 1970 vert project Pt2

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gtc:

--- Quote from: demonx link=topic=7212.msg1045936684#msg1045936684 ---He didn't charge me full price for the time he was there today and he said when I go back to him, as the job didn't get finished he won't charge me labor he'll only charge me for the soda bags used.

--- End quote ---


That guy must really like Vettes!

Your work to date is impressive. It should be a stunner when finished. Keep up the great work!

demonx:


After ising a heat gun and paint scraper to get the most of the factory seam bonding crap out and then a sandblaster ta make sure I got the last of it, I have managed to redo all the seams with this panel adhesive made specific for this kind of job.

At first glance it looks just like silicone, but I can tell you that it sucks to work with. I bought a version you put in a gun and I figured thats be easy but I ended out using a paint scraper to spread it properly and even then it still looks messy as you can see from the photo.

Lucky this stuff is sandable so I can tidy up the mess ater the 24hr cure time. After that I'll be trying to tidy up the whole section more by shooting it with epoxy to seal it all, doing some light filler work to smooth it out, seal it with epoxy again and then prep the whole area for paint.

Also dissmantled the door hinges today. Will have to install new bushes as a couple of them were cracked. While I'm at it I'll also replace the pins and springs. I cannot find a place that sell the rollers though so I may have to try lube them up as they are all seized.

demonx:
The curse of this damn car continues.

A while back I dropped off a heap of parts to get sodablasted. Cost me $450

The last couple weeks I've been doing all the prep work getting ready to paint them and sandblasting some other stuff.

I've probably spent about 40 hours over the last fortnight on these parts plus the $450 cost of the sodablasting plus probably $200 worth of paint etc. All down the drain.

I thought I was leaving no room for error.

Heres the process I used:

a) Completely strip surface clean of any previous coating via soda and sand blast
b) Airhose all dust away at 125psi
c) Prepsol all surfaces for double safety
d) 2 layers  PPG epoxy primer at 40psi with 15 minutes before the second coat
e) Wait an hour then 2 layers PPG prima primer at 40psi with about 20 minutes before second coat
f) Let sit over night
g) Sand all parts back to 600 grit
h) Airhose all dust away wearing nitrile gloves so as not to get body oil on surface
i) Spray first layer of PPG Deltron Red

All looked like it went perfect until I went back into the spray room for the second coat 15 minutes later and saw this:





I cut through the paint witha razor blade to try find out what part of the process has destroyed my day. It appears the epoxy layer has been the downfall. No idea why as I've done test sprays using epoxy sealer and found it to be WAY better than any other I've tried and pretty much fool proof.

I am very p#issed off and have no idea what went wrong. I really dont want to have to hand sand inside those damn eggcrate grills again as that was a f**king chore.

Fourteen pieces I sprayed in this batch all are destroyed, so I cannot pinpoint exactly what has happened. I cannot see how anything could have contaminated the layers. I am completely dumbfounded right now. Common sense would tell me that there was some contaminant in between the epoxy layers - but it'd be damn near impossible.

gtc:
What a major setback after all of that work. Given that you seem to be following strict instructions to the letter, I'm wondering what the climate conditions were at the time and if that's a factor.

silver1:
you have a reaction problem with something you have used .PPG is not highly regarded amongst painters I know.

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