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Old 11-15-2016, 06:12 PM   #1
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Default Emergency cup gun question

Is it an okay practice to leave material in the cup gun overnight with a wet rag wrapped around the aircap? Advance S/G is the material. I leave paint in my airless pumps a lot of times, just never have in the HVLP gun.

What say you, you HVLP experts?
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Old 11-15-2016, 06:23 PM   #2
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"By the time I get to Phoenix.....she'll be rising"

Okay, I'm gonna go take a shower. I'm sure there'll be an answer when I come back. Right?
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Old 11-15-2016, 06:51 PM   #3
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I have left material in cup over a week no issue.

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Old 11-15-2016, 07:02 PM   #4
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I have left material in cup over a week no issue.

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Thanks, bobross. I was starting to feel ignored.
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Old 11-15-2016, 07:06 PM   #5
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No worries put a piece of tape over the tip and shake before you start again

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Old 11-15-2016, 07:06 PM   #6
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if your equipment is stainless steel there will be no problem.
if not,you are basically shortening the life of your equipment.
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Old 11-15-2016, 08:39 PM   #7
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Quote:
Originally Posted by Technogod View Post
if your equipment is stainless steel there will be no problem.
if not,you are basically shortening the life of your equipment.
It's probably aluminum, and it's OK to leave single component materials in equipment for short periods of time.
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Old 11-15-2016, 08:59 PM   #8
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I have never done it over night but I use the PPS system. I pull the cup and plug it and rinse the gun.

I was real anal at first but I have no worries now about leaving it loaded all day between coats if shooting an acrylic.

I just clean the tip and aircap well before laying it down, especially if shooting something like a waterborne laqcuer that drys fast and builds up on it.
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Old 11-16-2016, 01:35 AM   #9
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It's probably aluminum, and it's OK to leave single component materials in equipment for short periods of time.
yep. there will be no problem for solvent base.
water base is the issue tough.aluminum is cheaper but stainless or PPS is way to go for professional use .
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Old 11-16-2016, 10:46 AM   #10
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Quote:
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yep. there will be no problem for solvent base.
water base is the issue tough.aluminum is cheaper but stainless or PPS is way to go for professional use .
I've never had a stainless spray gun. I'd imagine they would be heavier then aluminum. All of my C.A.T.'s, Devillbis, Graco, and Binks, are Aluminum. Although, all of the fluid tips, needles, bushings, and triggers are made of either stainless or other non corrosive metal. I've only seen aluminum and plastic cups.
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Old 11-16-2016, 03:52 PM   #11
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I've never had a stainless spray gun. I'd imagine they would be heavier then aluminum. All of my C.A.T.'s, Devillbis, Graco, and Binks, are Aluminum. Although, all of the fluid tips, needles, bushings, and triggers are made of either stainless or other non corrosive metal. I've only seen aluminum and plastic cups.
Homestead finishing has stainless steel cups they sell.they are awesome.
Asturo has stainless steel spray guns (x series) and yes a little bit heavier but well worth the investment.overkill for many jobs.just for sick ppl (like me)
who want s to buy overkill all the time.
PPS cups are way to go if you ask me.changing and cleaning is easy and i have all the sizes i use.
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