More school district surplus sale scores.

I hadn't thought about a part falling in the oven, that's a good point. Whether or not it would reach an explosive mixture or not would be a hard question to answer. at this point I think I will put this oven on hold, maybe sell it on for a profit or keep it to cook with.

The video, to me, is of questionable value as to the oven question because as you said it wouldn't have the powder shot into it, It's more to the point of keeping the powder cleaned up and away from ignition sources, which the oven is one. The same thing can be done with powdered sugar and bakers use gas ovens all the time. Any organic powder can cause the same reaction.

Thanks for the link C-Bag, maybe I can convert it to electric.

Powdered sugar explosion

Thanks bpimm. There are so many folks on the net doing stuff that until you get into it a bit you don't get immediately how silly or crazy dangerous it is. When I first started in thinking about doing powdercoat myself I looked and read everything I could find. One vid was this guy just spraying a cloud of powdercoat, no mask, no booth, just a cloud you could barely see him through. On one plane I thought anybody could do this. But then I got there's DIY and just stupid.

I do everything, welding, machining, powdercoating and metal working out of the same two car garage. So when I do powdercoat I roll my oven outside the main door for the fumes and smoke. But also to preheat my pieces out in the sun on top of the oven. So because the Magic Chef oven I use is electric it's easy to move and I have an extension cord on it for 220v. I keep my little DIY powdercoat booth in the middle of the garage out of the sun and hooked up to my shop vac to contain the dust. This keeps the powdercoat from polluting the garage and messing with the other machinery.

I've gotten some crazy deals from school sales too. Not machinery, but office tables etc that I made into work stands for my powdercoat oven, assembly table, my sandblaster cabinet etc. You got some great deals and I hope you get the details worked out to your advantage.
 
Thanks bpimm. There are so many folks on the net doing stuff that until you get into it a bit you don't get immediately how silly or crazy dangerous it is. When I first started in thinking about doing powdercoat myself I looked and read everything I could find. One vid was this guy just spraying a cloud of powdercoat, no mask, no booth, just a cloud you could barely see him through. On one plane I thought anybody could do this. But then I got there's DIY and just stupid.

I do everything, welding, machining, powdercoating and metal working out of the same two car garage. So when I do powdercoat I roll my oven outside the main door for the fumes and smoke. But also to preheat my pieces out in the sun on top of the oven. So because the Magic Chef oven I use is electric it's easy to move and I have an extension cord on it for 220v. I keep my little DIY powdercoat booth in the middle of the garage out of the sun and hooked up to my shop vac to contain the dust. This keeps the powdercoat from polluting the garage and messing with the other machinery.

I've gotten some crazy deals from school sales too. Not machinery, but office tables etc that I made into work stands for my powdercoat oven, assembly table, my sandblaster cabinet etc. You got some great deals and I hope you get the details worked out to your advantage.


There are definitely people doing crazy stuff... That's why I like to ask questions, it can cut down the research time a bunch. When I first started searching DIY powder coat ovens the standard seems to be a propane torpedo heater elbowed into the side of a insulated box. I saw many examples of this idea with praise heaped on them for how good they work... I even found 1 direct heating gas commercial oven available, I should have saved a link.

I think I'll just sell this oven, I only paid $65 for it I should be able to recoup that. I have another Pizza warming oven I bought from the same school district a couple years ago for $20 to convert into a PC oven, it's electric but only goes up to 250* F It's 220V so I'm thinking it may have enough element and I'll just need to change out the controls.

I've had the power coating rig for several years, I went to look at a sandblast cabinet on craigslist and ended up coming home with the SB cabinet a powder coating rig and an older craftsman floor standing drill press. I really don't have the space to set it up right now but that doesn't stop me from spur of the moment purchases for it. lol

My shop is 1200 SF and it has a 3 bedroom apartment over it that were living in until I get the house finished, once I move into the house then I have another 1000 sf to work with, I'm thinking one of the rooms will be a finishing room with a paint/PC booth and an oven vented to the outside.

I have gotten a lot of goodies form the surplus sales over the years, big metal cabinets for storage, tables and carts. Lots of good stuff, the equipment is harder to find but does show up occasionally, there were 3 table saws at this one as well as another disk sander/belt sander combo but it was missing the nose roller assembly for the belt sander portion or I would have grabbed it as well.

Once again thanks for the insights.
Brian
 
WOW, using one of those kerosene torpedo shop heaters for an oven!?!?!? That is about the dumbest thing I've ever heard as it doesn't take much of a breeze to blow off uncured PC and those things stink so bad I'd rather be cold than have to breathe the stench off them, then add in the PC fumes.........o_O

After doing my own PC now for 8yrs for me it's about the size of the oven. I just bought my old Magic Chef off CL for $25 out of a remodel. It was a semi built in that had 4 electric burners on top. Pulled the top burners and mounted it on the old school table that was heavy duty metal frame that had a shelf under it that was perfect for storing my old ice chest that I keep my 10lbs of powdercoat and other supplies in. Helps regulate the temp and humidity it's exposed to. I do almost exclusively semi gloss black so everything fits in the old ice chest. All the racks, and bread pans store on top of the stove. Because I operate out of 400sqft everything is roll around work stations so the stove is one PC workstation and when not in use is packed up and rolled against the wall far enough back in the garage where the sun doesn't hit it.

Its all about how big of parts you are doing. Everything I do will fit in this old oven. I would love to see live what these ovens you've got look like because the one thing I don't like about my oven is the door. Reaching over the typical fold down door to put in or take out parts is the tricky part. So having side opening doors really appeals if it's deep enough and wide enough inside. Depending on what I'm doing my smaller parts hang off racks that stand in the bottom of the oven. The larger parts I put the wire racks in and put the parts on the bread pans so I can do 4 big parts at a time. Most of my stuff is DIY like my freestanding racks and I've even had to make one wire rack for the oven as I found out the hard way they are NOT standard. Everything is a close fit but it works for me.
 
They we're using the propane torpedoes so they wouldn't have the kerosene stink but still..

The oven I just bought has doors that open to the sides and they're actually tied together, if you open 1 the other door follows it. The rack size is 28"w x 22"d so it's not that much bigger than a standard oven on the inside anyway.
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The pizza warming oven has a single door that opens to the side like a refrigerator. I just dug it out so I could take a pic and my memory failed me again, I thought it was a lot smaller than the one I just bought but it's not... The rack size is about the same you just open the narrow side instead and it's a lot taller so the inside measurements are 22"w x 28"d x 39" tall. Guess I need to test it out and see if it has enough power.
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Both of those ovens are great. The pizza oven looks like the deal though. You could really load that thing up. There is only two things that would be the concern is there a rack system? And maybe there is some way to put a different thermostat and or heater element. You only need around 400deg for most PC, and some less than that. I've seen pro ovens that look just like that pizza oven.
 
Both of those ovens are great. The pizza oven looks like the deal though. You could really load that thing up. There is only two things that would be the concern is there a rack system? And maybe there is some way to put a different thermostat and or heater element. You only need around 400deg for most PC, and some less than that. I've seen pro ovens that look just like that pizza oven.
Unfortunately no rack system, there are slots in the back wall to hook racks in and some studs in the sides that could be used as well. I need to plug it in and see how hot it will get and see what kind of thermostat I can fit. The thermometer only goes to 280 degrees F so that needs replacement as well. Would be nice to have a window in the door as well.
 
One of the best investments I made early on was one of those inexpensive infrared temp guns. They are far quicker and accurate than a thermometer. Like $20? Been a while. You can see if there's any cold spots or the difference between the top and bottom, front and back of the oven. Just by pointing and pulling the trigger. Amazing.

To me the glass in the door is not a big deal because you can't really see through the light smoke with the door closed unless you have a really good light inside the oven. I do everything timed so I never check it till I take it out. My system, such as it is, is I'm prepping the next batch as a batch is in the oven. It's like skiing, once I start its constant until I'm done. But I do between 21 to sometimes as many as 65 pieces when I do a run. On my little free standing racks I can hang 7-8 pieces at a time and at 400deg they are done in 14min. By that time I've got another rack full ready and I pull the done ones and put in the next batch. Rinse and repeat.

I'm not sure what I'd do for that pizza oven. I guess a rack unit that would slide in and freestand with a roller rack to move the freestanding racks around to load and unload them. Would be interesting to see what was in there originally.
 
I decided to sell the gas oven and proceed with the electric, I got $400 for the gas one so that worked out good.
I don't plan on doing any production powder coating so it's just going to be parts for my own projects but who knows what may happen down the road.
C-bag, I'd love to see your rack system to get some ideas.
 
I see there is some disagreement with the type of oven to Safely use for Power Coating.......

FWIW I worked in the automotive paint industry for a few years and I can tell you that ALL of the powder coat ovens I have been in have ALL been Natural GAS. The ovens are heated through a heat exchanger so there is No Open flame in contact with the power coat material. The Main Safety point to be Aware of is that Powder in just about ANY FORM (yes even normal cooking/baking flour) will become highly Flammable if not explosive WHEN it is ATOMIZED AND freely floating in a contained Oxygen Rich environment! The changes for a flash over are very high at that point and Any open flame OR SPARK from an electrical source could produce an explosive result.
 
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