More school district surplus sale scores.

Sorry, no. It is too dangerous to run a VFD that close to a river. I'll come by and pick up the sander, take it off your hands and solve that problem for you! :). Seriously, nice finds! Suggest you just run a VFD off of a 220V (aka. 230V, 240V) circuit. A 15A, 240V circuit would likely do fine. Your rotary phase converter should work fine too. I think it would be nice to be able to control the speed of the sander using a VFD. Can't help you with the gas question.

Damn, that's good info, I would have just fired it up not knowing and caused the end of the earth as we know it...;)

110V would allow me to plug it in anywhere in the shop, 220 requires wiring in a circuit for it, I have thought about running a 220 circuit around the shop just for this kind of situation but haven't done it. The RPC would require a 50' run to get to that side of the shop but still doable. With the cost of the 110V VFD, that's off the table, the price on the 220V VFD (thanks Ulma Doctor) I think that's the way to go unless that 1hp motor on my shelf shows it's self.
 
Well, you can use the "220 welder outlets".
I could, they're not where the grinder wants to be, so running a circuit would make more sense in the long run.
Then again nothing in my shop is where it should be...
 
I had to convert a donated natural gas stove to Propane for a Boy Scout camp I help take care of. If I remember right, we soldered up and re-drilled the orifice's and changed out the regulator. The regulator was not that expensive, we picked it up at the local propane dealer.

Steve

Thanks Steve, I still have to tear it apart to see if I can get to the orifice to do that and in Hobart's infinite wisdom they made the regulator integral to the gas valve and expensive. I need to dig into it and see if I can modify or disable the regulator and run an external regulator. Generic parts seem to be very reasonable but the Hobart part is $300.00 for the valve/regulator and $100.00 for the orifice.
 
That oven would make a nice smoker.
It would, or even a nice overflow oven. thought about that yesterday trying to get everything cooked at the same time. even with 2 standard ovens we came up short and dinner was later than we planned.
 
Nice finds, but everything I've ever read said don't use any flame around powdercoat. Only electric ovens. I'm not sure if it's the fumes or what but I do know it's dangerous.

I've read that as well but never found anything solid as for the reasoning, many commercial PC ovens are gas powered and the only talk I've found so far about exploding powder coat it when it's in the dust cloud at application, even then it's mostly theory and no reports of an actual explosion. I'm still reading about it, If it turns out to be true I guess I have a nice big oven. lol
 
I would guess as long at the heating is done through a heat exchanger I guess there would be no problem. But the powder gives off fumes when it's cooking and its toxic enough for them to say don't ever use the oven again for food. I'm more used to industry underplaying toxicity than over playing. But what would be wrong with taking the guts out of an electric stove and putting it in yours? It would be for easier and cheaper than trying to buy the material to make a powdercoat stove that size.
 
I would guess as long at the heating is done through a heat exchanger I guess there would be no problem. But the powder gives off fumes when it's cooking and its toxic enough for them to say don't ever use the oven again for food. I'm more used to industry underplaying toxicity than over playing. But what would be wrong with taking the guts out of an electric stove and putting it in yours? It would be for easier and cheaper than trying to buy the material to make a powdercoat stove that size.

What I've read so far is that the fumes are toxic but most are not flammable, and I have found both direct fire and heat exchange models of ovens.

The other thing I'm finding is the warnings are coming from guys that are using a toaster oven for small parts. I am still researching so I haven't made any decisions yet, If you have any links to real evidence that would be very helpful. The internet has so much questionable information out there it's hard to decide what's really true.
 
What I've read so far is that the fumes are toxic but most are not flammable, and I have found both direct fire and heat exchange models of ovens.

The other thing I'm finding is the warnings are coming from guys that are using a toaster oven for small parts. I am still researching so I haven't made any decisions yet, If you have any links to real evidence that would be very helpful. The internet has so much questionable information out there it's hard to decide what's really true.

I agree there is a lot of silly stuff on the net. I got my original info from a DIY book and he specifically pointed out a gas oven is not safe. The big industrial units use heat exchangers and the exhaust doesn't go through the burners and they pick up air outside the shop. But it's kinda common sense that you don't want open flame around any kind of dust, especially this fine. It didn't take much of a google to come up with what happens. This was put on YouTube by a local fire dept. And while I don't foresee blowing the powder directly into the stove the problem is having something fall off the rack in the stove has happened to me. And it's enough of a mess trying to get the part out as it is, but having it on fire too would be a mess too far for me. When you drop an uncured part the dust fall off, nuf said.
 
I agree there is a lot of silly stuff on the net. I got my original info from a DIY book and he specifically pointed out a gas oven is not safe. The big industrial units use heat exchangers and the exhaust doesn't go through the burners and they pick up air outside the shop. But it's kinda common sense that you don't want open flame around any kind of dust, especially this fine. It didn't take much of a google to come up with what happens. This was put on YouTube by a local fire dept. And while I don't foresee blowing the powder directly into the stove the problem is having something fall off the rack in the stove has happened to me. And it's enough of a mess trying to get the part out as it is, but having it on fire too would be a mess too far for me. When you drop an uncured part the dust fall off, nuf said.

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
 
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