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  • building a oven"need a little help"

    I am starting a oven project this week it will be 6 ft high 4 ft wide and 4 feet deep. What is the formula for figuring out how many btu's ill need to heat this thing I am pretty new to powder coating and have many questions........... any help would be greatly appreciated

  • #2
    oven

    Are you going with gas or electric? I built a oven the same size and I run 15K watts to heat it. Four 3000 watt elements. If you go with gas a think 11,000 btu's should work , but not sure.

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    • #3
      you can find the info if you look in my oven construction question i posted .biker bill answered and there is a site to go to where there is a very simple formula to figure this out. i to am building an oven ,its almost done.its 52 inwx68indx72inh inside dimensions.if you have any questions feel free to e mail me directly.

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      • #4
        I was going to use infrared, but I think I would like an oven. I was told that you can buy a couple old ovens and kinda slap them together. Im new at this. Is there a site that I can find plans on how to build an oven?

        Thank you, any info would be helpfull..

        Archer
        I Plead the Fifth!

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        • #5
          I'm new at this but i'm a scrounger at heart,, luckly had two of the 5 kids move on down the road, just had to save them ol bed frames..i'm building a 5x5x6 oven frame with them, got it all sorta bolted together eye ballin it for now, tryin to pick the brains of these guys here till I make a decision..I know parts is parts...but there's alot more to it than just a box with heat in it.
          Pro-Tech Powder Coating
          93976 Ocean Way
          541-247-8168
          [email protected]
          Gold Beach,Oregon

          Comment


          • #6
            Are you going with gas or electric? I built a oven the same size and I run 15K watts to heat it. Four 3000 watt elements. If you go with gas a think 11,000 btu's should work , but not sure.
            I'm new at this I'm in the process of acuaring a bigger electric oven
            can you use a GAS ovens I was told that gas ovens didn't work cause they have emitions and powder is flamable . if thi is the case
            I have 2 big gas ovens that I might use then.

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            • #7
              powder is only explosive when its in a mist form like when you are spraying it. I had an arc while spraying because I was too close. Only damage was i think my heart skipped a beat when it happened. but the part was fine, had to recoat an area because some of the powder blew off. But I put a part in a gas oven and it cure just fine. But I have an account with a custom bike builder, I use IR propane heat that I got off of ebay for $38. hook it to a propane tank and Im off, Getting a stand with a heater soon to do a guys car. Yeah that whole outside of the car! lol
              I Plead the Fifth!

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              • #8
                my newest oven

                okay here is some pictures of my new oven. its gas fired 16 feet long and 8 ft wide and 8 ft tall. has a separate door inside that closes it down to five feet deep for smaller parts. okay tell me how to add a picture and i will send them?[/img][/code]
                Thier are only two real sports!
                boxing and auto racing
                all the rest are just games.

                Drive it like you stole it!

                Comment


                • #9
                  If you have them on a web page just right click and click copy shortcut then just paste it in your post. Thats the only way i know how. If you don't have them on a web page you can email them to me and i'll post them for you. myo[email protected]

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                  • #10
                    11111111,

                    Can you give me a details on how your gas fire setup is going to be?

                    Thanks Mike.

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                    • #11
                      DETAIL

                      I AM USING A GAS OVEN CONTROL UNIT TO GEGULATE THE TEMP, I GOT A USED UNIT OUT OF A MOTOR HOME. IT ACTUALLY IS QUITE EASY TO CONVERT.
                      THE BURNER IS MADE FROM 3/4 IN STEEL CONDUIT. I HAVE'NT SETTLED ON THE SIZE OF THE BURNER YET. THOUGH I MADE THEM EXTRA LLONG SO IF NEED BE I CAN ADD A FEW MORE HOLES FOR MORE HEAT.
                      HERE IS A LITTLE TRICK I LEARNED FROM THE LOCAL RADIATOR SHOP. THE USE PROPANE TO DO ALL THIER SOLDERING, BUT THEY USING BRASING TIP WITH GAS MIXER CONTROLS AND HOOK COMPRESSED AIR TO THE OXY SIDE TO BRING THE HEAT UP AND GET A PERFECTLY CLEAN BURN. SO WHAT I DID IS WELD A FITTING ONTO THE SIDE OF MY BURNER WHERE YOU WOULD NORMALLY HAVE YOUR FRESH AIR INTAKE FOR THE BURNER. THEN I RAN A COPPER LINE TO IT AND BROUGHT IT OUT SIDE OF THE OVEN TO A CONTROL BALL VALVE AND THEN ON THE END OF THER BALL VALVE I HOOKED A IR FITTING UP FROM MY COMPRESSOR AND THE FLAME WENT FROM ORANGE SOOTED TO BLUE AND VERY CLEAN. IT ALSO LOOKS LIKE WE WILL USE AT LEAST A THIRD LESS OF FUEL FROM THE EXTRA HEAT.
                      I HAVE PLACED THE BURNER 24" OFF THE GROUND AND SHIELED IT OVER THE TOP TO DIFFUSE THE HEAT FROM THE FLAME. AND IN THE PROCESS I AM HOPING THAT THE BURNER WILL CAUSE A CONVECTION OF AIR CURRENT DRAWING UP THE COOLER AIR FROM BENEATH AND ELEMINATING A NEED FOR ENTERNAL FANS. (HOPING WONT KNOW UNTILL WE USE IT A FEW TIMES).
                      I ALSO RAN FROM THE REGULATOR AT THE TANK TO A BALL VALVE AND THEN TO THE BURNER.(SEEMS TO WORK WELL BEING ABLE TO DIAL IN THE EXACT AIR FUEL RATIO AT ANY HEAT LEVEL.
                      ON MY OVEN I HAVE TWO BURNERS ONE IN THE SMALL ROOM AND THEN WHEN THE CENTER DOOR IS OPENED WE CAN WITH YET ANOTHER BALL VALVE SEND GAS TO THE OTHER BURNER AND ALLOWING US TO ONLY NEED ON TEMPERTURE CONTROL SYSTEM FOR BOTH BURNERS.
                      I DID FIND THAT YOU MUST USE A SECOND BALL VALVE FOR THE SECOND BURNER FOR THE FRESH AIR INTAKE SO THAT THE FIRST BURNER WILL NOT TRY TO DRAFT THE GAS THAT IS BEING FED INTO THE SECOND BURNER AND CAUSING THE FLAME TO BURN INCORRECTLY AND SOOTY.
                      INSTAED OF A WINDOW WE OPTED FOR INSPECTION PORTS. I AM USING 3 EXUAST PIPE CUT TO THE THICKNESS OF THE WALL AND WELED IN IN A FEW KEY SPOTS SO WE CAN INSPECT THE PARTS AND BURNERS WHILE THE OVEN IS AT TEMP. WE HAVE JUST MADE SHEET MATEL COVERS THAT HANG ON A SCREW OVER THE EXUAST PIECESWITH A LITTLE HANDLE TO SLIDE THEM UP AND OUT OF THE WAY WITHOUT RELEASING A LOT OF HEAT. I'LL GET SOME DETAILED PICTS IF IT WILL HELP ANYONE. JEFF
                      Thier are only two real sports!
                      boxing and auto racing
                      all the rest are just games.

                      Drive it like you stole it!

                      Comment


                      • #12
                        I would love to see some pics. I plan upon building a gas oven myself, but am not sure how to sheild the flame if it is needed.

                        Thanks,
                        Kris

                        Comment


                        • #13
                          uuuhhh I have no clue what he just said. I found an oven big enough on another site yeah 8 grand...

                          what did it cost everyone to build their own oven? I have no welder, I have no access to welders, Im not good at this wiring in the elemets or know the whole BTU ratio air heat fuel formulas. Im just your average joe that knows how to blow stuff up and when it comes to motorcycles and fuel. Im all over it.. lol

                          would someone be willing to sell some plans to a poor man. lol

                          archer
                          I Plead the Fifth!

                          Comment


                          • #14
                            Originally posted by remotestartdepot
                            I would love to see some pics. I plan upon building a gas oven myself, but am not sure how to sheild the flame if it is needed.

                            Thanks,
                            Kris
                            You will need to build a heat exchanger around your burner using gas...I will try to get some pics of the one I'm working on today..
                            Pro-Tech Powder Coating
                            93976 Ocean Way
                            541-247-8168
                            [email protected]
                            Gold Beach,Oregon

                            Comment


                            • #15
                              Originally posted by Blademan
                              Originally posted by remotestartdepot
                              I would love to see some pics. I plan upon building a gas oven myself, but am not sure how to sheild the flame if it is needed.

                              Thanks,
                              Kris
                              You will need to build a heat exchanger around your burner using gas...I will try to get some pics of the one I'm working on today..
                              I would really appreciate it. I've been considering ussing burners for a BBQ grill. Would that get hot enough? What are you using? I would much rather use gas. I won't have to worry about current draw or anything like that. Any help would be appreciated.

                              Thanks,
                              Kris

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