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When I tip my gun downward...

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  • When I tip my gun downward...

    excess powder DUMPS out, causing me to have to blow off all the powder and start the whole piece all over. I'm using a household oven, so anything like a wheel has to be laid flat, so I have to spray down at it to get most of it. It's frustrating the hell outta me. What can I do to change this? I notice the amount of powder in the cup has something to do with it, but you can only remove so much before it won't work at all.

    I need to get a bigger oven up and running, hanging parts would be soooo much easier.

  • #2
    What airpressure are you using? In my first tests with the gun i noticed that anyting under 1 bar made it flow irregular, once up to 1.1 - 1.2 bar it started to flow correct and no buildup in the nozzle.

    What pressure do you all use with the caswell gun?
    WEIRD Performance & Coatings
    Sweden

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    • #3
      Re: When I tip my gun downward...

      Originally posted by Robb
      excess powder DUMPS out, causing me to have to blow off all the powder and start the whole piece all over. I'm using a household oven, so anything like a wheel has to be laid flat, so I have to spray down at it to get most of it. It's frustrating the hell outta me. What can I do to change this? I notice the amount of powder in the cup has something to do with it, but you can only remove so much before it won't work at all.

      I need to get a bigger oven up and running, hanging parts would be soooo much easier.
      My guess is you are using a hotcoat gun, mine does the same as what you are lalking about sometimes. My Caswell style gun was less suseptable to this, but would still do it if there was a full bottle on it.

      To cure this, keep the gun LESS than 1/3 full, the less the better. Adjust your air preasure up slightly, about one and a half pounds more. Mine sprays well when virtually empty at about 9 psi, if I have more in it at about 10.5 psi. If you want to use a fuller gun, go up to about 12 psi and back away a few more inches. I like keeping the preasure down and putting on less powder, there is less waste to overspray that way. If I was doing a frame or something I would up the preasure. You might also try a fluidizing tip, the powder comes out in a more forward pattern that way.

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      • #4
        i use a hotcoat an i go no higher than 10 psi .. i shoot it at 8-10 psi . i do have a caswell type gun i shoot at 8-9 psi...

        change the deflector plate to the one with 5 holes and you will be fine .. i tossed my stock deflector it was not giving the max performance that i wanted .... i got a pro gun ...

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        • #5
          Electrahan......hotcoat

          Just wondering about what you mean by these guns......whats a hot coat gun, were do you get them?

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          • #6
            I had a similar problem with a gun I have
            there is a plastic screw under the gun right in front of the trigger that controls the amout powder that goes out the front , if it's open too much powder will drop out the front even with no air
            check that atleast that fixed my problem.

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            • #7
              Hot Coat gun is the enemys gun (eastwood)

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