This is all good reading. Last week I bought Iron Gard from the dealer to start spraying this weekend. They carried the IH thinner for it and a new Valspar hardener, Renew. They said most people just went and got an automotive hardener.
I checked with a couple of the local NAPA stores that I knew used to carry and mix paint, and neither did anymore and just had some stuff on the shelf, but couldn't tell me what might work.
I work close to a Sherwin Williams Auto Paint supplier so I went in there today. They were very reluctant to sell me anything to put in the Iron Gard paint as they were afraid as to how it would dry or stick. I did appreciate the fact that they just weren't interested in the sale. I asked them how much their paint was and it was almost 3X the Iron Gard.
Later I called them and asked if they could cross reference a NAPA # and if they could, I was going to buy some reducer and hardener from them and take my chances. When I got there, they offered to match the price of the Iron Gard so that they knew the reducer and hardener would be compatible.
I quickly called the implement dealer where I bought the paint and asked them if I could return it if it was unopened and they said I could. Sooooo, I bought the Sherwin Williams and will hopefully be trying it out this weekend.
This will be my 1st attempt, but I'm one of those guys who gets pretty anal in my research so I hope it all turns out.