Instructables
Picture of Powder Coated Iron Pipe Candleholder
I've seen some cool candleholders around town made from plumbing fittings so this holiday season I made a bunch of powder coated iron pipe candleholders for friends. I've always wanted to try my hand at powder coating since it produces a beautiful durable finish and this is a project that lends itself very well to powder application. The candleholder tops swivel for several different candle configurations and the threaded fittings allow you to screw the candles in for a good hold.

To make the candleholder, the first thing you'll need is some pipe fittings. They are easily acquired at any plumbing supply or hardware store. I got mine at Center Hardware in San Francisco for 40 bucks. They didn't even seem to mind me sitting on the floor playing erector set as I worked on my design. You can use galvanized or black iron pipe, but the black pipe is cheaper so I went with that (see next step for full parts list).

About Powder Coating
Powder Coating is an electrostatic process where a charged pigment dust is sprayed into the air with a handheld gun. The pigment particles become positively charged in the gun and stick to the part which is connected to ground. You see powder coating all over the place: bicycles, motorcycles, park benches, cars. My initial impression was that it looks so good I figured the process would require expensive equipment or some hard-won skill. Turns out neither is really the case--you can powder coat at home with an inexpensive kit and an electric oven.



Powder Coating Kit
The powder coating kit I used was $140 online from Eastwood. The deluxe kit comes with two free colors, so I picked red and yellow, both very vibrant. You'll also need an air compressor with a regulator that can be set to 8 PSI. Pretty much any small air compressor will do, and if it doesn't have a pressure gauge, just pick one up with 1/4" NPT fittings.

To flow and cure the powder coating for small parts you can use a toaster oven, but for this project I wanted to assemble the pipe fittings into several large segments and coat them all together, so I needed a bigger oven.

Little Gotchas
One gotcha is that you can't use a gas oven to cure the powder coating, so the thing that made this project more complicated was getting and installing an electric range (my house only has gas). In the end I was glad I did, because I wouldn't want to eat anything out of the oven I used anyway. I picked up a used electric range for $75 off of Craig's List.

Another gotcha is that you have to thoroughly clean your parts. Oil, dust and any label glue on the iron will prevent the powder from sticking. I boiled my parts to get the labels off then cleaned them with acetone (outside).

Finally, remember that the powder pigment is a very fine dust and will easily coat your lungs and get in your eyes, so get a NIOSH-approved respirator and wear goggles while working. You'll need a workspace you can sweep or hose down after the dust settles. I made the mistake of leaving the door open between my workshop and a room where I keep some computer servers. Afterward, I noticed the server filters had turned red and yellow from all the powder they sucked in. But it all vacuums up or blows off easily.

These little things aside, this project was doable over a weekend. Ok, on to assembly!
 
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papagun5 years ago
So... can we get a "How to make your own Powder Coat Kit"? I think some would balk at considering $140.00 to be "inexpensive".
you can get the harborfreight powder coat gun for around 50 dollars.
Any Info on whats needed to Make your own gun, which Is what we really need.
brettlevine (author)  Lordinquisitor5 years ago
I don't have that info, but do think replicating the model I bought would be pretty straightforward. Tricky part is getting the charge unit right.
gallatea5 years ago
Great demo. I have an old parrot cage that I've been wanting to re-powder coat. I'd need an oven the size of a flat bed truck though. In any case, this was fun to learn about the process. I love the contrast of what's going on in the garage and backyard vs. the all white couch/white rug living room.
brettlevine (author)  gallatea5 years ago
So I've seen infrared panels that are used in large ovens. I think that's how they do it in the pro shops. I wonder if we could build something that would work. I'm interested in powder coating 10' long pipes.
nagutron5 years ago
Hey, so the material to be coated needs to be conductive, right (charged pigment particles attaching to any item connected to ground.) Are there ways to powder coat, say, aluminum?
jason nagutron5 years ago
Aluminum conducts electricity just fine.
nagutron jason5 years ago
You're right. My bad.
brettlevine (author)  nagutron5 years ago
You can powder coat aluminum, but I think anodizing is even more beautiful. I'd like to try it with a kit like this one: http://www.caswellplating.com/kits/aluminum.htm. There's even a process that allows powder coating of MDF and wood: http://www.process-heating.com/CDA/Archives/7840aadb9d268010VgnVCM100000f932a8c0____.
flattop5 years ago
If you want to avoid putting teeth marks on the fittings from a pipe wrench, you can use a pipe section as a lever. For example, on the base, you can hand tighten the side outlet tee, the nipple, and the elbow, then put pipe in the tee and elbow and use those to tighten and position the pieces. When you're happy with it just unscrew the pipe from the elbow. No teeth marks and no need to buy two wrenches (use that money to buy more powder).
khameed5 years ago
pretty cool!
benchun5 years ago
gotta love the inflatable hot tub
Cool idea! I think I like it a little bit more without the paint.
brettlevine (author)  Weissensteinburg5 years ago
It's definitely easier to put together. However, the iron will eventually rust, so at least a clear coat is a good idea.
powder coating comes in clear, right? that's probably way better than just spraying on some clear coat.
omnibot5 years ago
That is soo sweet!
nagutron5 years ago
Nice instructable, Brett. Now I want to powder coat everything :) Featured and rated up.