A friend and I are gearing up to refinish guns using GunKote as our primary finish. After coming up with and trashing many idea's for a stove that we could do barrels in,  we finally arrived on a design. We modified a kitchen stove and tested it as far as maintaining the 325 degree temp needed to bake GunKote.
We used an 8" section of stove pipe, a 6" section and 2 reducers 8"-6".
First we fastened one of the reducers to the 6" pipe using sheet metal screws. Next we slide the 8" pipe over the 6" pipe and reducer and fastened the 8" pipe to the reducer with screws.
Next we stuffed fiberglass insulation between the two pipes. when we had that done we shoved the second reducer down over the 6" pipe and fastend it to the 8" pipe with screws.
Next we took the big burner at the front of the stove out and cut a hole through to the oven using a reciprocating saw. Ironically the hole in the crome ring  was  8" which provided us with a snug fit.
Intially we had a cap for an 8" pipe as a cover but during our initial test we discovered it wouldn't get any hotter then 200 degress in the stove pipe. We removed the cap a bit and the temp shot right up to 350 degrees.
So I modified the cap by cutting a half moon hole in it and making a damper that we can pivot around to increase or decrease the size of the hole, thus adjusting the temp in the pipe.
A friend who is a retired appliance repair man lent us a thermometer with wire probes to use to keep and eye on the temp.
We haven't done any refinishing yet because we have to order in the aluminum oxide from Ontario..
If anyone is interested in seeing our stove I'll take some pics and post them.

We are going to use the oven for receivers and such but a 26" or longer shotgun barrel doesn't fit very well..and we want to hang it instead of laying it on something.
Plus..it was an excuse to waste a couple of days in the garage with power tools..

tag

Be back in a few minutes with pictures. It's an electric range.

The stove.



The adjustable vent. Sorry for the paint..it was the only sheet metal I had.



Inside the barrel "oven".



The hole through the stove top into the oven.



The "nut" I used to fasten the vent cover on with is a piece of threaded tub from an old table lamp. I put a washer between the sheet metal cover and the stove pipe cap and between the sheet metal and the top nut. I needed something hollow so we could insert the rod to hang the barrel.



This is a piece of 3/16" brake line. I put it there to give us a place to put the wire for our thermometer into the pipe. It isn't finished yet. I'm going to use half of a compression fitting to hold it in place.



Here is our rod for hanging barrels. It's a good old GI issue ar15 cleaning rod. You just insert the t-handle section through the tube in the cover and screw the rest on.



I had a friend make me this on a lathe. It's aluminum and should allow us to hang any caliber barrel. It has an approx 3/16" hole through it. I plan on peening the jag that comes with the cleaning kit out flatter to hold the cone on the rod.



Here is a 30" 12 gauge barrel hanging in the barrel oven.



Here is how much hangs in the oven. You can adjust the height by adding and removing sections of cleaning rod.



Here is the thermometer we were lent by a friend. Future plans are to buy an infra red thermometer.



If anyone has any questions let me know. It was easy to make once we decided exactly how we were going to do it. It will maintain 325 degrees in the stove pipe with no problem although it is hotter in the oven. We will have to do the barrels by themselves.

Very Nicely thought out!!!

Thanks guys. It was cheap to make.
We got the stove for free.
All the stove pipe and reducers,etc cost $80.
The rest of the things I had laying around the garage.

Quoted: that's a good idea, please let us know how it works as far as holding proper temp.

It works good. You definitely need some type of thermometer to adjust the vent until you get teh right temp. Once we got it at 325 approx it maintained it. We had the oven set on around 450 to keep the elements on constantly.

Was your wife pissed when she saw the hole you cut in her stove!!!!!

I told her it's for baking loaves of bread and making popcorn..

Update. We added the other important piece of equipment. This was on sale at a local tool, auto parts type store for $188. It's my Christmas present to me from the boss. I can fit the 30" barrel in and and turn it around horizontally.

Would this be the wrong time to mention the plans for a stove that Norrells has....

Damn I want a blaster too

Quoted: Would this be the wrong time to mention the plans for a stove that Norrells has.... Damn I want a blaster too

LOL..I read about quite a few designs online. This is actually a Canuckian modified version of the one Lee Hadaway uses.  He cut a hole in the side of the stove and pop riveted one of those big rural mail boxes to it and wrapped insulation around it.
room in my garage is at a premium so I didn't want something sticking out of the side taking up a lot of space.
The door is just to the left of the fire extinguisher and the back bumper of the Camaro is just to the right of the blasting cabinet..

Quoted: Watch out when using IR temp tools.  Emissivity messes up the readings in some cases very badly.  A black surface works best, but even then the emissivity should be adjusted to match a thermocouple.

Could you put that in English?

You should also check for the temp variation over the length of the tube.  Without insulation the variation can be significant.

The pipe is insulated..well except for the top.

Quoted: Emissivity is a measure of the amount of IR radiated compared to a perfect 'black body' at the same temperature.  Different surfaces and materials have different emissivity.  Better IR temp readers allow adjustment for the emissivity of the target.  Cheaper ones ‘assume’ a nominal value and go from there.  A light colored or metallic (even shiny) surface will have a lower emissivity than a flat black surface.  The reading from the IR will be lower than the actual temperature, and if you crank up the heat to the make the reading correct, the actual temperature is now higher than desired. A thermocouple can be placed on the surface and then the IR aimed beside the thermocouple.  The emissivity is adjusted till the IR reading matches the thermocouple.  IR device calibrated.

Okay..I understand the emissivity part. Still foggy on the thermocouple though!

It does not appear there is much insulatiojn present from the pictures.

You can't see the insulation in the pipe because it's between the 6" & 8" pieces. There is a reducer on each end to seal the 2 pipes together.

Quoted: A little extra heat in the garage in the winter wont hurt either! Cool oven.

The garage is heated with baseboard hot water although I have the system drained. It actually gets to a decent temp on sunny days because it's insultated and the sun shines on it all day long.
I've seen it -25C outside and puddles of water on the floor in the garage.

I've been thinking about building a solar oven for use here in the summer. It gets about 140 in a car, I figure I can get an oven up to 300.

140 in a car...
No thanks..

Quoted: Quoted: I've been thinking about building a solar oven for use here in the summer. It gets about 140 in a car, I figure I can get an oven up to 300. 140 in a car... No thanks.. But you can handle -40 in a car I bet.

Sure. Provided the doors aren't frozen shut and I can get in!