Hi Scott Again,
Thank you for your reply and spec information on epoxies. I see what you mean about the properties and advantages of using epoxies over conventinal 2K primers and putties as you describe. On that basis, i must agree with you, and i find no arguement against you.
However, the only honest feedback i could give you is that in my experience in the trade, i've never had any rust appearing and eventually coming through issues, when iv'e painted 2k Primer/Putties over properly prepaired clean mild steel, and then followed through with quality color/base/clear coats. And also, i don't have shrinkage or sinkback issues with the 2K systems, providing you give your paint the right bake temp and bake & cure times.
On that basis i end up getting the results i want. I will say though, that i've used some clearcoats, that for some reason, don't want to cure properly no matter what you do. For me. that has been a problem sometimes. I'm currently using PPG where i work, and find it a reasonable quality paint.
Going your way, and using epoxies, would definately be the 'Rolls Royce',best quality way to go, i guess, but as i said, going 2K does it for me.
To each his own i guess. Thanks again for your feedback,and may your clear coat not get runs.
Greg.