How to clean the PC gun???

[benherr]

OK, Call me stupid, but how do you clean the PC gun. Does the end defuser just pull out? there's a screw on the bottom of the gun. does that need to be removed to disassemble it? I don't want ot damage it, so I thought I'd better ask first.

Ben

[JTW37]

The defuser (if this is a Caswell gun or HF), will need to be unscrewed from the shaft. It's long winded, so just keep turning. When that's out, reach down inside the tube with a pair of needle nose pliers and pull out the metal piece. Next pull the plastic screw out of the bottom of the barrel. It should have an O ring on it. After you get all that out/apart, blow out every orifice you find and blow air through the barrel from the front and into the curved tube until no powder comes out. Then give it a good look to make sure there is no powder.

[benherr]

Originally Posted by JTW37

The defuser (if this is a Caswell gun or HF), will need to be unscrewed from the shaft. It's long winded, so just keep turning. When that's out, reach down inside the tube with a pair of needle nose pliers and pull out the metal piece. Next pull the plastic screw out of the bottom of the barrel. It should have an O ring on it. After you get all that out/apart, blow out every orifice you find and blow air through the barrel from the front and into the curved tube until no powder comes out. Then give it a good look to make sure there is no powder.

JTW,
Thanks for the info and now another question. After powder coating the piece, should I have the oven up to temp. before placing in oven or does it hurt anything if I place in oven before it reaches the specified temp?

Ben

[Harleydad]

Originally Posted by benherr

JTW,
Thanks for the info and now another question. After powder coating the piece, should I have the oven up to temp. before placing in oven or does it hurt anything if I place in oven before it reaches the specified temp?

Ben

Too slow or too quick of a heat up rate can contribute to OP. If I have some heavy material I'll put it in a 450 degree pre heated oven and monitor the part temp until it gets close (350 degrees) to cure temp (400 degrees) then turn down the oven to cure temp.
The opposite with thin walled material. I'll turn the oven on and set it to cure temp (400) and put the part in when the oven reaches 325 - 350.

In both scenarios, start the clock when the part reaches cure temp.

Does that make any sense.

[benherr]

Originally Posted by Harleydad

Too slow or too quick of a heat up rate can contribute to OP. If I have some heavy material I'll put it in a 450 degree pre heated oven and monitor the part temp until it gets close (350 degrees) to cure temp (400 degrees) then turn down the oven to cure temp.
The opposite with thin walled material. I'll turn the oven on and set it to cure temp (400) and put the part in when the oven reaches 325 - 350.

In both scenarios, start the clock when the part reaches cure temp.

Does that make any sense.

harleydad,
absolutely it makes sense to me. I've been placing the piece in the oven and turning on the heat and waiting for the piece to reach temp and then starting the clock. No wonder I've been getting OP. Most of the items I'm PC are between 3/8th to 1/2 inch in thickness (T-6061 aluminum).

Thanks, I may just get one done that doesn't look like an orange and carters like the moon.

Ben