DeVilbiss Paint Gun

[61 Silver]

Hi!



While I was at Carlisle I spent some time at a DeVilbiss display tent. I was talking with the DeVilbiss Rep. about the possibility of using a two-quart pressure cup (with fluid and air hoses) for painting cars. I have had this gun for over 30 years and sprayed thousand and thousands of gallons of wood lacquers over the years, but only a few cars. He stated it was his gun of preference. Has any one used a pressure cup system to paint cars and how did you like it? If so, what was the tip-needle and air-cap size preferred and any special tips about painting cars with this set up?



Thanks for any help!



Ray

 

[John Mcgraw]

Ray,

I have used pressure-feed guns for painting cars in the past, and it is really no different then using a suction feed gun. I still use a pressure pot for shooting Gelcoat and SlickSand since they are so thick bodied. The real advantage of a pressure feed setup, is that they are unaffected by gun position and deliver the same ammount of paint regardless of whether the gun is upside down or rightside up. Of course, as allways, there is also a downside of a pressure feed setup as well, and that is that you have more individual parts to keeep track of. You now have a fluid hose and an air hose, as well as a pressure pot to move around and not drag anything through your paint. Obviously, painting a small piece of furniture or a musical instrument is dramatically different than a car, and you don't have to move around so much or spray in all kinds of tight locations. I switched to a gravity feed SATA gun several years ago, and it was one of my better tool decisions! It makes spraying a car a lot easier now. I had used my old trusty Binks #7 and a CA Lynx gun for years, and thought that they were the best spray quality that could be obtained. I had tried many HVLP guns over the years,including SATA, and was less than thrilled with the spray quality these guns provided.
A buddy talked me into trying his new Reduced pressure Sata gun, and I was hooked. Went out an bought one the next week, and have not picked up either my CA or Binks gun since! You can get very good paint quality with a pressure feed setup, but managing all the individual components, can be a real pain sometimes.

Regards, John McGraw

 

[studiog]

John, you're the man when it comes to good advice.

 

[John Mcgraw]

Na, just my humble opinion. I am sure that there are many who have differing opinions, but this is just my experience.


Regards, John McGraw

 

[61 Silver]

John thanks for you view!



Do you have a recommended tip, needle and air cap size for the JGA pressure cup gun? When we sprayed lacquers for wood, the lacquers had a very high solids content and required a large tip and needle set.

As always, thanks for your help!



Ray

 

[John Mcgraw]

Ray,

You could use anything from a 1.2 mm to a 1.4 mm needle. I personally like a 1.4 tip as a good general purpose tip. It will supply the volume necessary for most urethanes and clear coats, but will still shoot lacquer if you crank the fluid needle down. If you were only going to shoot Lacquers, then a 1.2 tip would probably be the best choice. You really have to be on your toes with a 1.4 to avoid sags and runs, but it sure puts down material down fast!

Regards, John McGraw