I am looking closely at finishing off the internal cavity areas of my car body. I'd like to get feedback on what other people are doing in this regard and what products they use. I found a lot of info on what layer process should be used for the external finishing but internally things are not as clear.... I have given the insides of the body panels 2 coats of PPG epoxy primer. After scuffing with a red scotchbrite I was going to apply 2 or 3 heavy coats of uPol Gravitex. This would be applied to the insides of just about anywhere I can get to (inside rear quarters, inside door skins, pillars, front fenders), most of these areas would not get any other paint applied. However, areas that get seen such as inside the rear quarter panels (in the trunk area), would get colour/clear finish on top. So please share what you found works, what is best practice and products are junk and what works for you. Thanks,

I'm an amateur painter, certainly no pro. Painted a couple of cars in the past but increasingly trying to get more specific and technical always wanting to make it better. I only have one "good" spray gun, a Devilbiss Pro Lite and it has a TE20 air cap, 1.3 paint nozzle. I've used this for everything from primers to topcoats. My current situation is should I buy different air caps for basecoat and for clear for the Pro Lite or should I buy a different gun? In saying that what would be the ideal air caps for the Pro Lite. I've heard people say a TE10 for basecoat and a T110 for clear ? I plan on spraying PPG Deltron solid color red basecoat (no metallic or pearls) and plan to finish off with a PPG clearcoat and I'm not sure which one yet. I would be spraying inside my shed, so no spray booth and no baking, Typical spraying temperature would be around 26'C (around 80'F). Any feedback on guns/gun setup or clearcoat/reducers ? Happy to provide any other details if it helps.........