Powder Coat Help

[Scratcher09]

I have successfully powder coated several times but I'm having trouble today. It is my first time using a satin color. It is a satin black from Eastwood. I am preheating at 450 but I still can't get it to flow. I am assuming even though it is satin it is still suppose to turn glossy when it flows, right? I left the piece in there for 45 minutes but no flow out. And it came out looking matte, not satin. I'm hoping a couple of the powder coating pros here might give me some advise.

 

[lightning722]

I'm not an expert by any means, but, I've been powder coating for around 15 years. I used to use exclusively hot coat brand from east wood. I've noticed in the last year that I have had terribly unpredictable results with hot coat though. Especially in any of the non gloss blacks. I used to absolutely love the black wrinkle from them. Now it's more of a slightly textured satin that I hate. I've switched to a sight online that has infinitely more colors and I've been having good results so far. If I think of it I'll try to find the link.

 

[JRK5892]

ya something has to be wrong, I do not use eastwood powders as IMO they lack quality, i would call their techs and ask

 

[Scratcher09]

I checked around and only place to buy powder here in San Antonio is Sherwin Williams and they only sell it by 50 lb boxes. I know Horrible Freight has gloss black but I don't trust the quality of their powder. And I don't want to wait for an order to be shipped so I decided to go with another color I have on hand--silver vein. Not what I originally had in mind but I think it looks ok.

 

[JRK5892]

go with powderbuythepound they will ship small amounts anywhere

 

[nighthawkracer]

I do a little pc for ppl. The reason it turned out matte and not satin is bc you over baked it. 45 mins is way to long. Just preheat the part to 125, shot it, put it in the oven and let the part get to 250, let it sit at 250 for ten mins to help with the flow out, turn the oven to 410 and let the part get to that temp, then let it sit for ten mins. Once youve done that, turn off the oven and just crack open the door, don't open the door all the way bc the cooler air will haze it. Just crack open the door to help everything cool off faster. And one last note, Eastwood powders are junk compared to prismatic powders.


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[JRK5892]

man i am not sure i agree with much of anything above here... first we do not know the part, so the PMT and saying that 45 is way to long is a shot in the dark... hell a frame will take over that just to get to PMT while a smaller alum part will get there faster, we have never seen flat or satin gloss up from over cure. you are sugesting that he hot flock the part but on a small part that is going to cause excessive powder build up and create issues in his cure time and the durrability of the powder, once powder is cured for full time you can pull it no reason to do a gradual cool in the oven, never heard of that either. sounds to me like the above is not fully curing his parts if you are flowing out and curing for 10 min.

 

[Scratcher09]

The instructions for the powder say to put it in at 450 till it flows, then 20 minutes at 400. Problem was it never flowed. I have never tried preheating the part before shooting. I do pre bake to outgas but I always have let the part cool before I wipe it down with solvent and shoot it. After I'm done with these parts, I will experiment on some scrap parts with the satin blk. Thanks for the advice.

 

[nighthawkracer]

Experimenting is the best way. I do also suggest that you make your way over to the powder 365 forum as their are a lot of skilled powder coasters over there. I can't tell you how much time they've saved me.


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[o1marc]

If you all listen to me you will eventually learn I was right. DO NOT BUY POWDER from Eastwood, it's quality is always suspect and their prices are too freaking high compared to just about everywhere else. Their cure instructions are wrong, they know they are wrong and they refuse to correct them.

Most flat, matte and satin blacks will all go to a full gloss before the last few minutes of cure.

 

[Scratcher09]

I tried different techniques and could not get the satin black to flow out. It never turns glossy at all and when done, it is a matte finish. So I am tossing it and will order a better quality powder. No more powder from Eastwood. (Although I will continue to order other things from them.)

 

[honda53rider]

I second poweder by the pound!

By the way grate color combo for the motor!