first off single stage sux my personal opinion alot of old school hotrodders use it but 2 each there own i would say base/clear ppg makes a decent economy line "(shopline)" also dupont nason full base now i dont go by a gauge go by ear spray out some test panels until u get the gun dialed in also what gun r u using size tip/needle mean alot i use a 1.3mm for base clear 1.5 2k high build primer also compressor matters if ur using a compressor thats too small ur psi at the gun is changing all the time i been sprayin in my backyard garage base clear kandies for 7 yrs
orange peel can be caused by alot of things water, oil in the lines (if ur using a compressor with oil) what i recommend is a disposable filter that goes on the gun looks like a little ball its plastic and also run off ur compressor a TOILET FILTER there made buy motor guard takes rolls of toilet paper u can also be layin it on too heavy mist single stage u can spray 60/40 overlap im no expert on single stage but i recommend base clear 5 star is even cheaper decent for learning also with base clear if u get trash in the base simply tack rag out or wet sand out if bad hit that spot wit base again then when u spray clear it will lay out if u get orange peel most people dont worry u can let it dry couple days wet sand the orange peel and buff if u dont have a buffer just wet sand the clear make sure to stay away from corners because u burn threw gotta reclear i cut and buff all my cars i spray do u just a better outcome comes out super wett heres a car i sprayed this is b4 i cut in buffed and u dont need a booth to get a nice paint job cant stand people that say ohh its not gonna come out good unless u spray in a booth just take ur time painting is a step by step process me and my car club been sprayin in garages 10 plus years