Topic: RE: Propane Oven for powdercoat

[chewbacca5000]

I want to use this propane stove for powder coating small parts http://syracuse.craigslist.org/app/3250271456.html

  I don't see the problem with it as there is no way for the powder to come into contact with the flame.  I can roll it out on the lawn, hook up a propane tank, bake my stuff and roll it back.  I have no 220 in my garage.

Mega huge cooking ovens must be powered by gas anyway.  Check these guys out http://www.sprayboothsupplies.com/gas-powder-coating-oven-curing-12FT-high-12FT-wide-30FT-deep.html

Does this sound like something that will work?

[chewbacca5000]

Here is another example.

Powder Coating oven fired by propane torpedo heater - HOT

[nccb]

I dont know anything about powder coating but how much heat is involved and for what time period?  If its 500 or above, I would be worried about that little oven for a long period of time.  I have heard of some ovens "melting" due to long bouts of high heat, since they are really only made for light residential use.

[trueblue]

It should work, if I remember correctly with PC it needs to run at about 200C for about 30 mins.  All the commercial ovens are gas powered, so don't stress over that.

[cgswss]

I use something just like it.  A stove out of a rv.  I normally use 350 for 20-30 min with eastwood powder.

FYI, I bead blast the parts first, then I "gas out" the parts by putting them in the oven for about 10 min.  I spray them with powder while they are still hot, then pop them back in the oven to cure.  Doing it this way, I have never had a part peel.  Before I did the "gas out" cooking before spraying, I had a couple trys fail.

[chewbacca5000]

Thanks a Million  trueblue and cgswss!  This just made my day!  I searched and searched the forum and all I saw was propane is a powdercoat No No.

Cgswss  if you could snap a pic of your oven and how you have it setup it would be most helpful.

Here is another idea that I am kicking around an old school solid steel enclosed trailer.  100% metal on the inside.  To build an enclosure like this would run me well over $1000. 

Why not insulate the outside and add a heating element.  When I am not using it I can roll in into the back yard.  Use my jeep drag it up the hill cook my parts roll it back down.

[bollingball]

Thanks a Million  trueblue and cgswss!  This just made my day!  I searched and searched the forum and all I saw was propane is a powdercoat No No.

Cgswss  if you could snap a pic of your oven and how you have it setup it would be most helpful.

Here is another idea that I am kicking around an old school solid steel enclosed trailer.  100% metal on the inside.  To build an enclosure like this would run me well over $1000. 

Why not insulate the outside and add a heating element.  When I am not using it I can roll in into the back yard.  Use my jeep drag it up the hill cook my parts roll it back down.

 We made a pig cooker from one of those. You may want to put a regulating fan from top to bottom for uniform heat. For the burner we used black pipe with holes drilled that was the tricky part. Start small and work your way up. Most any place that builds cookers can help with that and the regulator size. You might want a 100# tank we used two 20#. A lover at the top to adjust temp in case it gets to hot. Look at any big grill for ideas

Ken
Ken

[chewbacca5000]

Thanks a Million  trueblue and cgswss!  This just made my day!  I searched and searched the forum and all I saw was propane is a powdercoat No No.

Cgswss  if you could snap a pic of your oven and how you have it setup it would be most helpful.

Here is another idea that I am kicking around an old school solid steel enclosed trailer.  100% metal on the inside.  To build an enclosure like this would run me well over $1000. 

Why not insulate the outside and add a heating element.  When I am not using it I can roll in into the back yard.  Use my jeep drag it up the hill cook my parts roll it back down.

 We made a pig cooker from one of those. You may want to put a regulating fan from top to bottom for uniform heat. For the burner we used black pipe with holes drilled that was the tricky part. Start small and work your way up. Most any place that builds cookers can help with that and the regulator size. You might want a 100# tank we used two 20#. A lover at the top to adjust temp in case it gets to hot. Look at any big grill for ideas

Ken
Ken

Awesome!  So this idea is not so far fetched after all?  Can you snap a pick of your pig cooker I'd love to see how you got it setup on the inside.  Did you bother with insulation, or is it unnecessary? 

I don't understand about the black pipe?   You mean to tell me you can just make your own heating element by drilling holes in the black pipe?

[bollingball]

The pig cooker is in another state now. Yes the black pipe works great if you can find a place that builds cookers they can make one up for you. They will have the hole size and regulator worked out. Take the inside measurements to them or even better pull the trailer to them. They can do this stuff in there sleep and save you a lot of trial and error. We insulated on the inside for a cooker you run it all day so it saves gas. Try it without depends how tight the trailer is You can get gaskets for the doors from the cooker place or maybe home depot. Try google home made cookers for more ideas
Ken

[chewbacca5000]

The pig cooker is in another state now. Yes the black pipe works great if you can find a place that builds cookers they can make one up for you. They will have the hole size and regulator worked out. Take the inside measurements to them or even better pull the trailer to them. They can do this stuff in there sleep and save you a lot of trial and error. We insulated on the inside for a cooker you run it all day so it saves gas. Try it without depends how tight the trailer is You can get gaskets for the doors from the cooker place or maybe home depot. Try google home made cookers for more ideas
Ken

Thanks!  Much appreciated.

[faux fiddy]

This thread got me to thinking.

I used a kiln to match tile one time.

I made several trips to the place that did the firing, and then had a chance to get my own kiln pretty cheap.

I think it would be perfect for powder coating.

Then I got to thinking about porcelain parts. hmmm.

[chewbacca5000]

This thread got me to thinking.

I used a kiln to match tile one time.

I made several trips to the place that did the firing, and then had a chance to get my own kiln pretty cheap.

I think it would be perfect for powder coating.

Then I got to thinking about porcelain parts. hmmm.

That is a great idea!  I would be paying them another visit. You could even do high temp ceramic.  You'd be everyone new best friend!

For now I think I might get this little oven for 25 to 50 and go from there.

http://syracuse.craigslist.org/ppd/3163752351.html

[faux fiddy]

I used a kiln to match tile one time.


  I would be paying them another visit. You could even do high temp ceramic.
http://syracuse.craigslist.org/ppd/3163752351.html

For now I think I might get this little oven for 25 to 50 and go from there.

http://syracuse.craigslist.org/ppd/3163752351.html
[/quote]

I actually latched on to a kiln pretty cheap but have never got it up and working. The Kiln is pretty big, you could do any tank, but not a frame. Swingarm, probably fits.

I don't know about it but I think it gets up to 3,000 degrees. I imagine any ceramic shop would do your cooking, I think they charged about $45 when I had a whole kiln full. My test pieces only cost a few bucks a pop. I guess it takes 12 hours or more.

I'm not sure exactly how they do it. 'Cone 6' is what they I seem to remember they  describe, I guess there's little things that melt at different temps and when the sixth one melts your glaze is cooked. Different times and settings for different material.

thehouseofclay.com

[chewbacca5000]

That is interesting.  By cone 6 my powder would be burnt to char.  You would need more like 350 to 400 for powder coat so you'd have to figure out a way to dial it down.  Not sure if you can control the heat or not.

[Bodi]

Typically a small ceramic kiln uses a cone as power/gas shutoff. The heat is on until the cone softens at its rated temperature: it's placed in a little clamp deal held open by the cone, it closes when the cone softens. The cones are exactly long clay looking cones, there are a few sizes but about an inch long is typical for home kilns. The heating coils in an electric one are pretty powerful and the radiant heat would probably damage nearby powder coating before the temperature reached your target. All in all an oven made to get to thousands of degrees is not suitable to use at 400. Big production size kilns are usually gas heated, and use electronic thermocouple controls rather than mechanical cone shutoffs. Assuming the control will work at such a low temperature that might be workable.

[shinyribs]

There was an auction years ago in my town. I was some sort of company that does commercial kitchen remodeling/maintenance.i.e. Burger King,McDonalds...We picked up on old Subway bread warmer for $50. Well insulated stainless steel cabinet. As bis as a standard household fridge.It will hold a Cb750 frame easy. Added a circulationg fan and 10kw of electric heat. Works good and was cheap. Just another option to consider.

[ncstatecamp]

I dont know anything about powder coating but how much heat is involved and for what time period?  If its 500 or above, I would be worried about that little oven for a long period of time.  I have heard of some ovens "melting" due to long bouts of high heat, since they are really only made for light residential use.

a lot of modern residential ovens have a self clean function which basically kicks it up to 500+ for 5 hoursish so all you have to do is brush out the dust of what ever was in there

also everything ive powdercoated has been 400 for 20 minutes, turned out fantastic and it was pretty cheap #$%* too

[chewbacca5000]

There was an auction years ago in my town. I was some sort of company that does commercial kitchen remodeling/maintenance.i.e. Burger King,McDonalds...We picked up on old Subway bread warmer for $50. Well insulated stainless steel cabinet. As bis as a standard household fridge.It will hold a Cb750 frame easy. Added a circulationg fan and 10kw of electric heat. Works good and was cheap. Just another option to consider.

Thanks SB!  This is a good tip.  This one would need to go truck, but is 30 x 40 x 73.  I have heard of people gutting out standup freezers, but this seems like a nicer solution.

[chewbacca5000]

In addition to what everyone else has said about propane here is a cool video that shows massive determination.  I would really like to know if there are other materials than metal that would work to build an oven.  Sheet metal is big $$$$.  A ready made container is looking good right now.

powder coating on a mexican budget pt. 2

[shinyribs]

Thats thinking outside the box for sure!   For simplicity sake,your standard kitchen oven will work just fine. Whether its gas or electric wont matter. So long as your parts will fit in there. Old ovens should be pretty easy to come by cheap on your local craigslist.

[chewbacca5000]

Thats thinking outside the box for sure!   For simplicity sake,your standard kitchen oven will work just fine. Whether its gas or electric wont matter. So long as your parts will fit in there. Old ovens should be pretty easy to come by cheap on your local craigslist.

Yeah that is what I am going to do for now.  I really admire this guys determination though. 

Check out the results for less than $300 bucks.  It would probably be 500 to 700 to pay someone to do this.

MOV00811