Damien Schneider
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I would go with positive pressure type ventilation. Meaning, attach the filters to the back of the fan and blow the filtered air into the booth, garage, etc. This will eliminate the problem of sucking dirt and trash into your paint area. I would setup the two 20″x20″ fans about 3 to 4 feet off the ground on one end of your garage and make two openings each 10″x10″ on the other to keep some pressure in the spray area. This way also helps to keep the solvent mist from hitting the fan motors. Always remember spraying outside of a booth is dangerous so if the spray area becomes saturated with solvent give the fans some time to catch up. Good luck and have fun brother!
I have both and I use both for different things. My setup is a Minijet 1.4 for primer, then I use an LPH80 1.0 for metallics and pearls and a Minijet 1.2 for solids and candies followed by another Minijet 1.4 for Clear and another LPH80 0.8 for blending solvent. Both guns atomize nicely but the LPH seems to get a finer mist for me and the Minijet sprays a nicer fan. If you’re looking for an all around gun I would go with the Minijet 1.4, I do repairs and custom work so I use a 1.4 because you can get a mini flake through it. For repairs only go with a 1.2.
Yes, it’s part of a Vapor-Compression Cycle like what is found in refrigeration. Compressed air leaves the main tank (similar to expansion valve) into the larger diameter copper tubes which causes flash expansion leading to a cooling effect on the air. Damien
I used the hpc on an a panel repair about a year ago and I must say it holds up well. It sprays out nice and lays down fairly flat. With that said, it is only really made for small repairs and a complete job is a no no! I tried it and it it dries too fast, you will have dry spray everywhere (it is a wet on wet clear no exceptions). The only real problem I found was that you have to sand and polish the same day because this stuff dries fast and hard and it is a pain in the ass to buff the next day! I ended up going with PPG’s Global 8101 Fast Clear, it is out of dust in 2-4 minutes and I can still sand and polish the same day. Damien
Sound like solvent pop to me… You were probably spraying heavy and there wasn’t enough flash time between coats for the solvents to evaporate before you applied the next coat. It could also be the area in which you are spraying… Remember you have to have air flow for the evaporated solvents to escape, otherwise the heavy solvent in the air is trapped in your spray area (booth, garage, etc.). This can also cause your clearcoat to dieback (become dull). Damien