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Tool Talk Discussion Forum

paint gun

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Eli

01-27-2007 20:34:27




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I found one I like using the advice of the forum. After a whole day of comparing I bought the HVLP kobalt from Lowes. Directions are not the best. I read past posts but still have one question. The box says 29 psi 5.8 cfm. Do I set the compresser at 29 psi and the regulator at the bottom of the gun at 10 or so psi, or do I leave the compresser turned up and set the regulator at the gun at 29 psi. I'm spraying John Deere enamal. If someone can just get me close on the settings I'll adjust and practice from there. Thank you, Erick.

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CNKS

01-28-2007 10:34:07




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 Re: paint gun in reply to Eli, 01-27-2007 20:34:27  
Set the air control on your gun wide open. Set the 29 lbs with the compressor regulator, as indicated by a gauge on the gun. But I pay no attention to actual compressor pressure, as my compressor is piped to a regulator/air trap on the wall. That is the one that I set the gun pressure with. Do not use the wall gauge on the wall for the pressure, though, because there is pressure drop from the regulator to the gun, use the gauge on the gun. As to the other settings: HVLP works best with full fluid flow and full pattern, but they can be cut back. Set the fluid flow with NO paint in the gun. Open the fluid flow wide open, so that it is almost at the end of the threads. Pull the trigger. Turn the fluid control in until you feel resistance caused by the trigger, turn in no more than 1/2 turn after resistance is felt. Do the fan control the same way, maybe 1/4-1/2 turn from wide open. THe instructions for some guns simply say wide open on both settings. You do not ever need to mess with those settings as long as you want a full pattern--at least that is the way mine work. I never change them after the initial setting. Works every time, however I cannot speak for the inexpensive guns from Lowes, although the principle is the same.

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Eli

01-28-2007 12:56:41




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 Re: paint gun in reply to CNKS, 01-28-2007 10:34:07  
Thanks for the input, you have been a great help. I"ll give it a shot. Erick



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shannon from ohio

01-27-2007 20:48:03




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 Re: paint gun in reply to Eli, 01-27-2007 20:34:27  
I always set my compressor regulator to the pressure i want give or take. The amount of pressure will affect your spray pattern so you may have to adjust up or down to get proper spray pattern for your type of paint (thinned or unthinned)Enamel,Lacquer,Etc. The regulator on most paint sprayers is only a restrictor valve which means you'll have full line pressure upon releasing the material trigger unless you use the regulator on the compressor....

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Eli

01-27-2007 21:05:04




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 Re: paint gun in reply to shannon from ohio, 01-27-2007 20:48:03  
So I set the compresser at 29 psi for starters, the gun restrictor-regulator to 29 psi with air moving, and than in theory I should have 10psi at air cap? Thank you, Erick.



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Eli

01-27-2007 21:03:19




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 Re: paint gun in reply to shannon from ohio, 01-27-2007 20:48:03  
So I set the compresser at 29 psi for starters, the gun restrictor-regulator to 29 psi with air moving, and than in theory I should have 10psi at air cap? Thank you, Erick.



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