[RocktimusPryme]

I bought a lovely used "Tony Orts" style cowl hood for my first gen at the nationals.

It was used though and already painted. I feel bad painting over someone's airbrush work, but none of it is right for my car.

With fiberglass do I need to treat it any different than a metal hood?

Other than some chips that will get a little filler or glazing putty, and one corner that ill put a fiberglass patch it its in good shape.

I was just planning on scuffing it good, shooting some epoxy. Doing the minor repairs. Hitting with another epoxy seal coat and painting it. Unless someone has a really good reason to do so I really don't want to sand it down to metal, or glass in this case.

[78w72]

Different opinions & ways to do this, personally I wouldnt put 2 coats of epoxy and the new paint on top of previous paint, will be very thick & could lead to problems. Epoxy over existing non epoxy paint/primer probably doesnt have much benefit either.

Sanding it down to at least the previous primer layer or fiberglass would be best, then use whatever primer/paint you want. But if you know or trust the previous paint, a scuffing & repair then a coat of a good regular primer would be ok since the previous primer/paint acts as a sealer.

[RocktimusPryme]

Thickness was my one big concern here because it already looks thick.

What are you considering “regular primer”? Like a 2k?

[78w72]

Yes a traditional good 2k primer, my painter uses only dupont now axalta brand primers & paints, never had an issue related to the paint or prep on any cars Ive seen that hes done for 25+ years, 1 of my TA's was painted back in 2008 and has no issues with the paint using non epoxy primer, looks almost like the day it was buffed.

Epoxy primers are great and lots of shops use them today, but usually the benefit is on bare metal where it can adhere & seal better than regular primers, can even do body work over it within the allowed time. Maybe some other more experienced painters can comment on using it over existing unknown condition paints or mention what they think about repainting this hood that already has thick paint on it. But with a DA sander, stripping a hood goes pretty quick, whatever primer you decide to use, its best to get as much of that old paint off first, IMO.

[RocktimusPryme]

Yeah I definitely considered that.

In my case I was planning using epoxy thinned as sealers both times. But maybe that first case is redundant.

I should say, this is for me. Not a for profit client and while I want it to look good obviously I’m also not looking to put 100 hours into this thing. Maybe I should say “What’s the least wrong way I can do this and get solid results”

Other than a couple chips, the hood now is pretty flat, which is what I didn’t want to give up. I didn’t want to have to block sand the whole thing flat again after I sand it all down. I was also concerned about going too far and getting down into the glass accidentally.

But, I’m probably going to flake this hood and put a paneled graphic into it. Which means multiple layers. So I guess I should remove some of the existing layers…..

I like 2k urethane primer, my only concern with it is long term shrinkage. When I’ve used 2k in the past I’ve let it sit in primer for a while. In this case once I start I want to knock the whole thing out in 2-3 days.

[performerrpm]

i was plannin to buy a new glass deck for my 65, but had the one that came with tbe car an decided to fix it. mine had several chios in it. my dogs even chewed a 1" by 12" are off. i started by da sanding the paint pretfy good with 220 paper. i used upol urethane 2k primer mixed thin as a sealer and put over it to give me a good surface to work on and not cake the primer on. once scuffed, i fixed the chips indivudually with evercoat 2pt scratch puddy. blocked most all of the sealer off a re sealed. fixed any missed spots and did my glass repair and came back with coat mixed for filling and put a coat over everything. i used that to block out and remove tbe smaller sand scratches and smooth over the glass repair. after all that a final seal coat was put on. if your prepping for pant, your gonna end up sanding most the primer off. my decklids ready for paint now, but i coukd easily break through the primer with a couple passes of 400grit so its not to thick