Powder Coating on the Cheap

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#23
anatech said:
Hi Ron,
However, your comments seemed to suggest that everyone should do it at home themselves. Bill made an excellent suggestion for those of us who simply do not have the time or opportunity to do as you suggest at home. Now they are all aware that there are two options for having something powder coated inexpensively. That was your goal, wasn't it?

Please tell us in which post I suggested everyone should do this themselves. My Goal was to help those already interested in DIY powder coating

I did not put any words into your mouth, you simply didn't like what I had to say.
"you can't expect everyone to learn absolutely everything related to their hobby." You are putting words into my mouth. Where did I say this? or even imply this?

You asked, I answered. Your comments were unfair to Bill who suggested an alternative. Besides, I found this thread interesting.

His suggestion was to pay someone else to do it for you. Hasn't that always been the alternative? Why should you build speakers / Amps if you can buy them too? Because we enjoy it.

Cable thread? Are you suggesting that I involve myself in messing up cable threads as a rule? I think you just attributed something to me that is
untrue. Nice. 🙄

I didn't want this to devolve into a cable type thread that goes round and round and nowhere. No inference to other threads.

-Chris 😉
Click to expand...
Ron
If you don't want to learn or have the time, fine. I'm not making anyone do a damn thing. I was attempting to share knowledge with like minded people who had the same interest. If you don't have time or the inclination great, go pay someone. I DON'T care.
I pick up Zinc Phosphate at my local ACE Hardware in California. I bought a quart 10 years ago and have 3/4 of it left. It is neutralized by Hot water.
This is also used for Parkerization.
Ron
 
#24
jean-paul said:
Mmmm, zinc phosphate is very dangerous to the environment. That means normal civilians can not get it here, specialised companies can. It is a class H410 stuff.
Click to expand...

Easy to get here even Amazon lists it. However it should be used with a respirator! And the other normal safety equipment, gloves eyeshields and forced ventilation. Also spill absorbent should be kept on hand.

But I suspect few have all the right equipment.

http://datasheets.scbt.com/sc-251448.pdf
 
#25
Love powder coating properties, but am slightly worried that no mention was made in this otherwise useful post about post spray paint curing without which this method is useless.
Being that it typically implies reaching around 200C , it is not a small task.

Small parts could be placed in a kitchen type oven (just avoid the one you cook your turkey or bake your cake in) , but what do you do on larger parts?

I bet you have already solved that, can you please show how you manage in a home environment?

Thanks.
 
#26
Precoating is only useful/necessary for objects which will be in weather conditions.
For objects which stay in dry conditions (inside your home) it is not necessary.
I powdercoat my aluminum transformer covers without precoating, just clean them with acetone. Never had problems.
 
#27
JMFahey,
You are correct. An oven is needed to cure the deposited powder. Not really a paint, more of a coating. I use a large toaster oven I purchased at a garage sale. Inside it's ~ 10" x 14" and works well for PC. I always preheat the metal after washing it to force out-gassing before powder coating the object.
Right again, it should be known that using the cooking oven is a NO-NO, don't even think about it, the fumes are nasty / toxic no doubt.
In one of my previous houses I wired up a full size oven in the garage that I picked up for free from Craigslist. Plugged right into the 220V table saw outlet. Craigslist is an online free / cheap swap meet / newspaper classifieds forum.

Pieter T,
True also, I used the pre coating process on my car / truck parts I powder coated. Living in snow country we get salt on the roads to melt the ice and it can create problems if not precoated. Acetone works well to clean contaminates. Yep. If the metal is pre heated it helps prevent "fish eyes". Glad to hear someone else has had good luck DIY powder coating.
If being used outside there are different types of powders for specific uses. All take different cure rates / temperatures and have specific applications.

I am not an expert, I just have fun and enjoy learning new things to challenge myself.
Ron
 
#30
I have done this mod to my HF powder gun and am highly pleased with the new output. The only problem I have is storage. The gun is attached to the power supply with that long cord and makes it difficult to put in a box. Has anyone thought about cutting the electrical wire from the power supply to the gun and rewiring it with a small plug and socket?? This would make it much easier to store and use the gun.
 
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