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Topic Review (Newest First)
08-25-2011 10:02 AM
Chevymon I was having a similar problem and there are aparently a few different reasons for it, so I called Barry K at SPI and he sorted it out for me. My main line regulator for the sandblaster started leaking at pressures over 75 psi, so I was spraying epoxy with the lower line pressure while waiting for a rebuild kit, and just didn't put two and two together. I don't mean to sound like a professional, just a hobbist.
08-24-2011 08:59 PM
rsdevil Well tonite after work, I prep'ed and taped up just a fender instead of the whole car. The only adjustments I made from the last time I shot were adjusting the pressure before the hose high and then at the gun to 65 which dropped it right into the recommended pressure range that the spec sheet calls for. (I think 50ish) I also added the reducer at 4:1:1 (clear /hardener/reducer) and gave it a shot. I must say she came out BEAUTIFUL...!! No peel... No solvent pop... No drips... I can see my reflection...!! It took me all summer and if I can get the rest of the car to come out like this it was all worth it. Thanks again for all the help guys..!! I'll snap some pictures when she's done.
08-24-2011 06:41 PM
Chevymon I think your father has the right idea. Turn the pressure up to 120 psi at the wall and set the gun regulator where you want it. You also may need some high flow fittings and you should be using 3/8 inch hose.
08-24-2011 06:19 PM
Originally Posted by bbc68
I always adjust my air pressure at the gun with the trigger pulled all the way back. It helps to do this with no product. In the gun sometimes I put a little bit of laquer thinner in the gun to clean and check the fan. But I always spray a test pattern. With product before I spray the car
One of best advices. Always have a test panel to test your gun BEFORE shooting the car.
08-24-2011 05:53 AM
rsdevil Hehe If I can get the clear to come out right for me this weekend there's going to be a party over here that's for sure...!! You guys are all invited.
08-23-2011 02:46 PM
Originally Posted by jcclark
I love it!!!!!!

Party time!

08-23-2011 10:37 AM
Originally Posted by MARTINSR
Are those Christmas lights up in the booth?
I love it!!!!!!
08-23-2011 09:17 AM
bbc68 I always adjust my air pressure at the gun with the trigger pulled all the way back. It helps to do this with no product. In the gun sometimes I put a little bit of laquer thinner in the gun to clean and check the fan. But I always spray a test pattern. With product before I spray the car
08-23-2011 08:45 AM
rsdevil MartinSr... that's a makeshift paint area. It's actually the awning off the back of my house. The tarps & 1/2" EMT can come down and go back up in prob 1/2 an hr. Thank you for the readings.
08-23-2011 08:09 AM
MARTINSR Are those Christmas lights up in the booth?

Here are a couple of articles on spraying that may give you some tips.
"Basics of Basics" Spraying and gun setup.

And "Basics of Basics" Spray technique.

08-23-2011 08:01 AM
rsdevil Thanks for the help guys...!! I feel soooo much more at ease having some type of direction to follow vs my own in-experienced guesses. BBC... that makes total sense b/c the base (which uses reducer) layed out with some texture and in a minute or two it self leveled itself and looked beautiful. Chevymon, I will definatly try my best. My father also swung by to see if he could offer any advice... I have an air water seperator before 50 ft of hose that I'm using. I was regulating the air before the seperator and when I pull the trigger it would drop below 40 psi. My father said I should try to up the pressure @ the seperator / before the hose to maybe 100 and regulate it at the gun instead. Should I be regulating the air when the trigger is being pulled..??

It's not a Old school American Hot Rodder I'm working on but here's a pic anyways of where I'm at w/the car. It's a 1985 Mazda RX-7.

08-23-2011 07:07 AM
bbc68 If I am not mistaken on the p sheet it says you can reduce with jr506-507 and there is a fast reducer also I use the same stuff and mix 4:1:1 with the 507 because sometimes I spray in a open shop around 80 degrees and I spray it on like I want it to look I also follow the flash time next coat window and it lays flat if you have alittle texture wait a little while and let the reducer/slow work you can almost watch it flatten out hope this helps
08-23-2011 05:50 AM
Chevymon You went from really dry to really wet by changing your technique, now try inbetween
08-22-2011 03:59 PM
rsdevil The clear is Shopline brand JC620 Acrylic Urethane Clearcoat w/shopline slow urethane hardner JH6285. The spec sheet does not say to use a reducer...?? Just 4:1 clearcoat / hardner. My gun is regulated to 50 psi, sheet calls for 50-60.
08-22-2011 03:19 PM
Rag top bird the small pinholes are solvent pop from to much clear to heavy of coats what clear are you using and what temp of reducer are you using your orange peel could be from low air pressure under reduced clear or even the gun can cause this problem
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