Appreciate the lengthy reply. Some good points there to take on.
Couple questions, for a professionally sandblasted steel frame (aurum) would it be better for a etch primer or high build 2K primer in terms of longevity? If the longevity is better it might be worth going for etch even with the added prep time.
After some more research the only 2k primer spray paint I can find is Final Systems High Build 2K Primer Spray at £10 a can which I can't find many reviews for.
Epoxy specific primer seems to only come in 1K if I am looking correctly.
As an example if I was to use Final Systems 2k high build primer - 2 coats, then a max of 3 coats of Gold, then SprayMax 2K lacquer would this work? Afaik and can understand there shouldn't be any reaction when using them together?
Lastly, in one of Etoe's videos he mentions that you shouldn't sand back the Montana gold which I find strange. Surely if masking etc, you'd want to produce a flat finish before the clear? If you agree what would you use?