W400 cleaning

[wjieling]

First thx hub for the trick!that's a great help for clean the nozzle!BUt there is another issue I have is I found my guns getting dirty inside of the gun body, I don't know why but it's true!I always can see little little dirt in the paint (I'm sure car is clean and tacked and double strain the paint) any idea will be appreciate!

[Hub]

First thx hub for the trick!that's a great help for clean the nozzle!BUt there is another issue I have is I found my guns getting dirty inside of the gun body, I don't know why but it's true!I always can see little little dirt in the paint (I'm sure car is clean and tacked and double strain the paint) any idea will be appreciate!

FIRST are you sure its dirt Look at it with a magnifying glass could be solvent pop or CAH contamination.
Are you painting metal, fiber glass, composite
Is it on both the horizontal and vertical surfaces
Check your air supply, is it clean

Foreign matter (dirt) usally comes from the object itself or the technician
Cheers,
"HUB"

[wjieling]

I'm not sure how it looks. But I can feel with my hand.I'm painting ppg waterbased on all kinds of surface, I have clean and tacked,new paint suit and the booth filter has been change last month. When I open up all part of the gun I can see so much dirty things in it even the spring and rubber o ring
Thx for reply

[Hub]

I'm not sure how it looks. But I can feel with my hand.I'm painting ppg waterbased on all kinds of surface, I have clean and tacked,new paint suit and the booth filter has been change last month. When I open up all part of the gun I can see so much dirty things in it even the spring and rubber o ring
Thx for reply

Is it dry spray

From what you are saying you think the debris is not coming from the paint or ambient conditions. Have you soaked the whole gun while cleaning allowing solvent to enter the air passages, if not, that leaves only one source, the air supply. Spray a piece of non tinted single pane on glass and look at it from the bottom side to see if you can tell what the bebris looks like.

"HUB"

[wjieling]

That's a good idea any good news let u know thx

[Hub]

That's a good idea any good news let u know thx

Will look forward to bettter results.
Cheers,
"HUB"

[wjieling]

Hi hub,I used my clear gun to spray a test panel with black paint .it comes out perfect clean,then I switch to my iwata for the second coat. Then it comes dirty look.I have break down the gun and soak it over night.

[Hub]

Hi hub,I used my clear gun to spray a test panel with black paint .it comes out perfect clean,then I switch to my iwata for the second coat. Then it comes dirty look.I have break down the gun and soak it over night.

Make sure to blow dry the gun inside and out and lube all threaded parts when you reinstall them.
"HUB"