I bought my PPG single stage awhile back. My hardener is too old. I bought a quart, it was obscenely priced. I have about 6 quarts of paint left, and about a quart of PPG interior paint that uses the same hardener. Mix is 4:1. If I use up my PPG I'll need more hardener. Does it have to be DCX61? Or would SPI hardener work?
Same question for reducer, can I use SPI?
Does reducer go bad with time?
And when people describe reducer as fast or slow, the low temp one is fast? I have PPG 870 and SPI 860. Heading into winter here I probably won't have the garage much over 70 while actually spraying. Might even drop below that while the fans are on, but once they are off I can get the garage into the 80s even in the cold. If I'm a backyard hack and want the single stage to flow out nice, which reducer should I use?
Same question for reducer, can I use SPI?
Does reducer go bad with time?
And when people describe reducer as fast or slow, the low temp one is fast? I have PPG 870 and SPI 860. Heading into winter here I probably won't have the garage much over 70 while actually spraying. Might even drop below that while the fans are on, but once they are off I can get the garage into the 80s even in the cold. If I'm a backyard hack and want the single stage to flow out nice, which reducer should I use?