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  • model cannon

    I am in the process of building a small model cannon. I need advice on how to bore the barrel. The bore depth will be 8" with a dia of 1". To much flex with a boring bar. Looking at long drill bit also. There must be other tools for this job when people are buidling cannons with 1.5" bores.

  • #2
    1" drill bit. You're going to be shooting blanks, not 1000 yard competitions.

    I drilled mine in steps. Starting with a jobbers 3/8" bit, then up to 1/2, then up again....

    This only went about 1/2 way, then I went to extension bits and repeated the process to 12" deep.

    BTW Roll-on deoderant balls filled with baby powder make realy neat cannon balls.







    She's almost 20 years old now. Made from 3" cold roll.
    Proofed it with 3 shotgun shells full of FFg and 6 shells full of shot. What a ROAR!!
    Last edited by Rusty Marlin; 09-04-2009, 01:54 PM.
    Ignorance is curable through education.

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    • #3
      Thanks for the reply. the 1" bit I have is 6" long but I can build a extenion for it. I also ordered a couple extra long drill bits but only up to 3/4" in dia..
      Nice looking cannon is that from a set of plans

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      • #4
        Yes, Dad found a copy of a casting print for an 8 pound deck gun.
        it isn't perfectly copied, but it looks good.
        Ignorance is curable through education.

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        • #5
          what about boring it with a boring bar and then reaming it to 1"?

          heres a couple pics of a small cannon i built for my father for his birthday. the bore only goes in about 2" but its not firing so it doesnt make a difference.



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          • #6
            Originally posted by mark42
            I am in the process of building a small model cannon. I need advice on how to bore the barrel. The bore depth will be 8" with a dia of 1". To much flex with a boring bar. Looking at long drill bit also. There must be other tools for this job when people are buidling cannons with 1.5" bores.
            Could I suggest that you use a length of DOM 1" id. Then machine a well-fitted and threaded plug for the breech end. Then machine it as if it was bored. Duffy
            Duffy, Gatineau, Quebec

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            • #7
              A 1" drill bit with an extension welded or silver soldered on will suffice in most cases.

              A D bit, with a 1/2" radius on the end will produce the proper profile for the chamber, and is simple to make from 1" drill rod. The D bit will also produce a better finish than a twist drill.
              Jim H.

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              • #8
                http://img.photobucket.com/albums/v6...on1/cannon.jpg
                Here is the start of my 10" cannon the 6" cannon is one I made 25 years ago in school
                Last edited by mark42; 09-04-2009, 10:46 PM.

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                • #9
                  http://news.yahoo.com/s/ap/20090905/..._through_house
                  28 mins ago

                  UNIONTOWN, Pa. – A Pennsylvania history buff who recreates firearms from old wars accidentally fired a 2-pound cannonball through the wall of his neighbor's home. William Maser, 54, fired a cannonball Wednesday evening outside his home in Georges Township that ricocheted and hit a house 400 yards away. The cannonball, about two inches in diameter, smashed through a window and a wall before landing in a closet. Authorities said nobody was hurt.

                  State police charged Maser with reckless endangerment, criminal mischief and disorderly conduct.

                  No one answered the phone Friday at Maser's home. He told WPXI-TV recreating 19th century cannons is a longtime hobby. He said he is sorry and he will stop shooting them on his property, about 35 miles southeast of Pittsburgh.

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                  • #10
                    I am building this for noise only

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                    • #11
                      [QUOTE=johnhurdState police charged Maser with reckless endangerment, criminal mischief and disorderly conduct.[/QUOTE]
                      Figures. Given that no one was hurt and there was no malicious intent, an aplogy and restitution would have been adequate.

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                      • #12
                        John,

                        Uniontown is rural enough that I have NO idea how it came to be that he hit his neighbor's house.

                        Plenty of room to shoot with nobody in the line of fire.

                        Fellow I know fired his over the 4th, an inch or more bore, 2 ounces of black, rag wad, and that sumbitch backed up about 4 feet. Probably weighed in at 20 pounds or so. 3 inch barstock, about 2 foot long on carriage.

                        LOTSA noise. Smoke smelled heavenly, for a BP shooter.

                        Cheers,

                        George

                        I might have a drill I could lend you. Have to check in the AM.

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                        • #13
                          >ricocheted and hit a house 400 yards away.

                          That's one hell of a bounce!
                          Chris
                          Merkel, Tx
                          http://raceabilene.com/kelly/hotrod

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                          • #14
                            cannons !! OT maybe

                            We built a black powder cannon years ago on a job we had in a wide open place. 4 in ductile iron water pipe 10 ft long, 5 gal bucket filled with conctete was the breech. 1 Qt sized Gatorade bottles filled with sand or rocks, or softballs were the projectiles. We could get way over 1/4 mile with it. it's just a bigger version of the potatoe guns we were messing with at the time.
                            Gotta love explosions though !!

                            yes drill it out, stepping up as you go to the 1 in. mark, shouldn;t be too hard to manage.

                            good luck T

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                            • #15
                              DOM Tubing

                              A piece of DOM (drawn over mandrel) tubing would probably be way better for a cannon than any drilled piece of steel. The drawing and resulting forging would probably yield a stronger barrel.

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