powder wont take charge?

[red99ls1ta]

so i got this new powder in from 'another' company and its a topcoat... im supposed to use another coat underneath it like a chrome, or a aluminum. i used the reflective chrome from ********(because it was free to me) and then i applied the top coat of this blue. its candy blue from ***** powdercoatings. it is a polyester high gloss type powder. after i baked the chrome on, the colored layers(i did one red and blue on two different parts) didnt want to take to the parts i did... but why wouldnt these parts take a charge after i did one coat? is it because of the things im using to create a charge? im currently using coat hangers... free and plentiful for me. it has worked all other time, just not now. any help?

[etyrrany]

Hi,

Can you please explain how your ground is attached? This sounds like the ground is not actually in electrical contact with your part. Also, check that:

1. Your powder coater is plugged in.
2. It is actually turned on.
3. Your ground is attached.
4. And you're stepping on the pedal.

I know these sounds really simple but I am guilty of each and every single one of those things at one time or another.

etyrrany

[bzer1]

Perhaps you might want to try sanding off the coathangers. They are coated as well as the buildup you are adding to them when you spray your parts(if you're not changing then between coats) It seems reasonable to me that you're losing your ground. I'd say if your gun is spraying new parts ok then you should clean off your hangers and try it again. Sounds like etyrrany is right on the money.

[red99ls1ta]

Originally Posted by bzer1

Perhaps you might want to try sanding off the coathangers. They are coated as well as the buildup you are adding to them when you spray your parts(if you're not changing then between coats) It seems reasonable to me that you're losing your ground. I'd say if your gun is spraying new parts ok then you should clean off your hangers and try it again. Sounds like etyrrany is right on the money.

i think thats what the problem is. i thought about that after i looked at how shiny the hangers were. the ground was on the hanger, i was pushing the button(red light lit up) and everything was as normal... just wasnt taking a charge. im going to try new hangers, then sand off the old ones and try again.

[tomg552001]

Spraying translucents is a little bit different, or so i've experienced. There is a different technique than normal reds blues and blacks and such. You need to really back off on the part and mist it good, and gentily let the powder attract. If you go to close, you'll just blow the very very fine translucent powder off the part.