Instructables

Powder Coating Glass - Glass Container

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Picture of Powder Coating Glass - Glass Container
So, you thought you could only powder coat metal? Think again! Powder coating is a great way to give a professional looking finish to metals and also to other surfaces that can safely be baked at 400 degrees for 20 minutes. You may need to finesse the process to get the glass to take the powder, but once you do, it's worth it! In this Instructable, you'll learn how to powder coat a glass jar as a finished piece, or as a surface for laser etching, hand-painting or other techniques. (Check out the Laser Etching Into Powder Coated Glass video here.) Then use them as gifts or in your own kitchen or workshop.

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Step 1: Materials and Preparation

Picture of Materials and Preparation
We will not address powder coating technique, but you can find it elsewhere in Instructables, like right here.

Make sure you remember that all materials you use for this project must be safe for baking at 450 degrees. Prepare your piece by removing all gluey lids or stickers, or rubbery gaskets, or anything else that's gooey and not allowed in the powder oven. Then clean it with soapy water, and let it dry thoroughly.

You'll probably want to work with several (3-8?) pieces when you first start because there's a learning curve to the process and it also saves time to work in batches. Further, if you're going to LASER or paint your coated pieces later, you'll need extra pieces for test strips and continued runs. You DON'T need to work only with jars: any kind of glass should work as long as the foil will attract the powder through the glass and you can work with the pieces throughout the process of coating and moving in and out of the oven.

What you'll need:

> Several Glass pieces between 4" and 20" in diameter. (rough estimates. it just has to fit your machines and be movable.)
> Hot soapy water and sponge or rag to clean materials.
> Powder coating materials, supplies, equipment, including powder oven.
> Heat resistant tape- Have about 5-30 feet for a project because you want to use it liberally.
> Aluminum foil. have at least a quarter of a roll to a whole roll for each project just so you don't run out.
> Conductive work-holding device, either hanging or resting, able to be transported to the oven and back.
> Gloves to transport the hot materials
> A clean rack or surface to cool the materials once out of the oven.
> optional: Wrapping paper or something to transport your piece out of the shop after you've coated it.
roballoba9 months ago
mmmm -GLASS! thanks for the tip!!
nice instructable looks like scout project time for some!
granthams1 year ago
http://www.youtube.com/watch?v=lijOrFsiX6A is my YouTube videos showing powder coating from start to finish.
nicely done
lime3D1 year ago
I really like this. I am wondering if you could fill the container with steel shot. This would let you powder coat tall bottles (too hard to get the foil inside), and you could save and reuse it.
tonyvelour (author)  lime3D1 year ago
Good idea..I bet steel shot would work well, i just didn't have any around. Was also a bit concerned about getting the shot in and out of the glass without chipping it. Was thinking steel wool would work pretty nicely if you put enough in to really pack out the bottle or jar.
Be careful with steel wool - it can catch fire and burns very hot!
tonyvelour (author)  throbscottle1 year ago
Thanks for that tip!!!!
How about all the free metal shavings at Techshop? I don't know about your location, but TechShop Detroit usually has a barrel full of the stuff, just waiting to be recycled.
Don't really care "WHERE" you made it, but it's an interesting idea.

How about an introduction to powder coating for those of us who've never done it, with some tips for doing it without all the funky industrial equipment?
The author earned a free class at Techshop, by telling you that it can be made at Techshop, with all the funky industrial equipment that is available to all members.
I've appologised for being grumpy, but I do find the "Tecshop" stuff to be a little tedious. It's a nice resource, if you happen to live in the USA, it's just rather depressing for those of us who don't.
Instructables is owned by Autodesk (the makers of AutoCAD and Inventor software) and is a major sponsor of TechShop.
Ahhh, THAT explains a LOT!
tonyvelour (author)  Dream Dragon1 year ago
Dragon-

I understand what you're saying about lacking access to the resources of an industrial shop. We're quite lucky to live near a TechShop and get to play with all the toys! The good news is this: powder coating is actually fairly low-tech and you could probably do it at your house with a purchase of less than $150 - $200. If you Google "Powder Coating Gun", you'll see advertisements for inexpensive setups at around $100 - $120 dollars. Eastwood is a good resource (http://www.eastwood.com/hotcoat-powder-coating.html). Order some coating to with it (avg $12/ half pound or a sampler pack of 6 for about $50) and you're almost in business. You could order a special powder curing oven, but your kitchen oven will probably do fine as long as it gets up to 400 degrees. You just need a well ventilated area (preferably outside or in a corner of your workshop) near enough to your oven to transport your powdered pieces to cure. Where do you live? Maybe they'll open a TechShop near you soon. Good luck!
tonyvelour (author)  lime3D1 year ago
^^ yeah!
tonyvelour (author)  Dream Dragon1 year ago
Hi Dragon. Glad you liked it.

(I listed where I made this piece because we have a deal at the shop about posting.)

Regarding powder coating technique: I edited this posting just a minute ago to include a link to a popular and detailed powder coating Instructable, which you can see here:

http://www.instructables.com/id/How-to-Powder-Coat-metal-art-items/

I felt like that lesson covered powder coating pretty well, so I just figured I'd link to it.

Thanks!
Tony
I'm sorry, that probably sounded more grumpy than I intended, but thank you for not being Grumpy back.

Thanks for sharing your technique anyway.

I'm guessing a similar technique could be applied to electrostatic coating of other non-conductive materials?
tonyvelour (author)  Dream Dragon1 year ago
I was already grumpy today so I got it out of my system. :)

It seems you can powder coat just about anything that you can: a) make the powder "stick" to either electrostatically or just with plain old gravity, and b) safely (no toxic chemicals, etc) bake at 450 degrees for 20 minutes.

When I did these pieces I used a wood holding for one of them and because it was flat it held the powder. Then I transferred the whole thing to the oven and when it came out, the wood was pretty well coated as well. There's also hotcoating, so if you bake your piece to curing temperature and quickly coat it while it's hot, the powder may try to stick. You'd then hurry it back into the oven before it changed it's mind. As for durability...who knows?

You could probably powder coat a really interesting variety of materials if you were willing to mess around with the process. The trick is just to be safe with what you're putting into the oven.
sunshiine1 year ago
Very interesting instructable! Thanks for sharing and have a great day!
sunshiine
tonyvelour (author)  sunshiine1 year ago
Thank you. I'm reading your cooking ones right now. :)
Hope you like them! If I make these jars I will let you know! I seem to bounce all over the place with good intentions to make something our authors make but I get side tracked! It is a great place to share though!