I had a play with my new spray gun today. I decided a while back that I wasn't going to use cellulose paint but to jump straight in there and use two-pack. The stuff is BRILLIANT!!! It sprays on really thick and gloopy and stays wet for ages. Coverage is great. Celly flashes off while you're spraying which means overspray can show up as a dusty finish but because the 2-pack stays wet you don't get any of this. I did a test panel today so tomorrow I'm going to go ahead and spray the engine bay in primer.
We've also been talking about atomising fuels using an aerosol method over on the pulsejet forum. The story so far is fueling a pulsejet on propane gas is easy, but you need a liquid fuel to run up at full power. Propane liquid is a damn expensive way of doing that though and there are a bunch of cheaper fuels like cooking oil etc. I am pioneering a fuelling method where you atomise a liquid fuel with the jet of propane and the spray gun has proved to be a suitable test bed for this.
Shooting water through it running on air I can get it to blast out a fog about 10 feet long completely atomised in a cone about 3 feet across. It's quite awesome, but I wasn't prepared to do it with thinners and light it by myself lol. Certainly blowing propane through it to carry the thinners was out of the question! Not by myself...
Interesting was how wet you can run the mixture. Winding the flow screw right out it can really carry some fuel out!!! I would like to see if it will atomise cooking oil, but I'll have to get another cheap gun to do this in. My guess is yes - if it can atomise 2-pack paint which is as thick as emulsion it will do the job no problem. You can also get it to fan the spray out into a flat triangle with less velocity which might actually mix the fuel with the incoming air a bit more effectively.
My main worry was the burn time. Where I used to work in special effects we had a flame thrower which worked on liquid propane. Propane burns real fast so as soon as you shut it off it goes out. Thinners and oil burns a for much longer and if it lands on anything it continues to burn until it's boiled off as such, like petrol would do. Didn't fancy that down my arm, I had enough of that at my last job interview when I set myself on fire by mistake!
I got that job by the way
We've also been talking about atomising fuels using an aerosol method over on the pulsejet forum. The story so far is fueling a pulsejet on propane gas is easy, but you need a liquid fuel to run up at full power. Propane liquid is a damn expensive way of doing that though and there are a bunch of cheaper fuels like cooking oil etc. I am pioneering a fuelling method where you atomise a liquid fuel with the jet of propane and the spray gun has proved to be a suitable test bed for this.
Shooting water through it running on air I can get it to blast out a fog about 10 feet long completely atomised in a cone about 3 feet across. It's quite awesome, but I wasn't prepared to do it with thinners and light it by myself lol. Certainly blowing propane through it to carry the thinners was out of the question! Not by myself...
Interesting was how wet you can run the mixture. Winding the flow screw right out it can really carry some fuel out!!! I would like to see if it will atomise cooking oil, but I'll have to get another cheap gun to do this in. My guess is yes - if it can atomise 2-pack paint which is as thick as emulsion it will do the job no problem. You can also get it to fan the spray out into a flat triangle with less velocity which might actually mix the fuel with the incoming air a bit more effectively.
My main worry was the burn time. Where I used to work in special effects we had a flame thrower which worked on liquid propane. Propane burns real fast so as soon as you shut it off it goes out. Thinners and oil burns a for much longer and if it lands on anything it continues to burn until it's boiled off as such, like petrol would do. Didn't fancy that down my arm, I had enough of that at my last job interview when I set myself on fire by mistake!
I got that job by the way