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  • #16
    a manhole cover seems a bit overkill. its a tiny little speed bag, not a city bus. How about some nice aluminum plate, plasma cut circular, bevel edge. clear coated or not. all weather. would not have to be that thick, or that heavy.
    @ArcSwivel
    #ArcSwivel sigpic

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    • #17
      Originally posted by rdshackleford View Post
      a manhole cover seems a bit overkill. .
      Rusty, these day we are supposed to sensitive and inclusive. A "manhole" cover is now a Personhole cover.

      Right now I'm watching Late Night With David Letterperson!!!

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      • #18
        Originally posted by PunchDrummer View Post
        I made a number of platforms for myself, and "triangles" (tetrahedron), make the strongest support, virtually eliminating vibration with they're mounted properly to a structure. The problem is that it is more complex to integrate a height-adjustment system without compromising that fantastic multi-point strength. That's really nice, and I hope you produce it for sale and use the strength as a marketing statement. Good job!! I'd buy one to replace my now rotted outdoor platform, but I think it would need a metal drum. Been looking for an iron manhole cover to replace that drum. Sweet!
        I was looking at a higher adjustable version but couldn't see how without sacrificing the strength,weight and cost to produce it
        i also designed a different style of platform using 30mm thick quartz slab that's ideal for outdoor use I'll post a picture of that one too ,

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        • #19
          Previous design of speedbag platform with quartz slab drum
          Attached Files

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          • #20
            Originally posted by UK mark View Post
            Here's the finished project of hours of cutting angle iron to length , trial and error of cutting angles to match up, sanding, varnishing, driving around to obtain all the components and powder coating, and finally designing the logo/graphics , I did test it before getting it powder coated just in case , pleased to say it was very solid with almost no rattle/vibration and exceeded my expectations
            what do you guys think ?
            Pics taken today whilst at work ( laid on the floor)
            50mm thick hardwood ply , currently getting quotes for real solid wood too
            Nice work Mark! I like the design of your platform. Looks very solid!

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            • #21
              Originally posted by UK mark View Post
              Previous design of speedbag platform with quartz slab drum
              Would love to have that setup for my deck outsidevery nice job UK Mark!!!!

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              • #22
                Tbh it's quite easy to obtain quartz slab over here and have it cut to size, plus drilling through it is easier than marble or granite

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                • #23
                  Originally posted by UK mark View Post
                  Here's the finished project of hours of cutting angle iron to length , trial and error of cutting angles to match up, sanding, varnishing, driving around to obtain all the components and powder coating, and finally designing the logo/graphics , I did test it before getting it powder coated just in case , pleased to say it was very solid with almost no rattle/vibration and exceeded my expectations
                  what do you guys think ?
                  Pics taken today whilst at work ( laid on the floor)
                  50mm thick hardwood ply , currently getting quotes for real solid wood too
                  Awesome job. Looks fast!
                  Speed Bag

                  Put a little Rhythm in YOUR workout!
                  *attendee: Every SB gathering so far!
                  The Quest Continues...
                  Onward to SpeedB.A.G. X! Summer 2019

                  THE 10th Year Reunion!

                  sigpic

                  The Art of the Bag

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                  • #24
                    Originally posted by Dutchman View Post
                    Ms Deville's husband built several different platforms for their use, Besides wood, he made one out of plate steel, another out of reinforced concrete. There should be photos of them on here plus there are Youtube videos of them in use. A manhole cover is several hundred pounds and in normal use requires two rather strong people to move them around, even with the purpose built pry bars that they use. Depending upon their age they can be made of cast iron, later ones cast steel. The ones at where I work all seem to be cast in India...

                    (actually not married....always describe as "My Friend Raul" )


                    Concrete
                    https://www.youtube.com/watch?v=6ug2YP4Ws4Q&t=13s


                    non-adustable
                    https://www.youtube.com/watch?v=NLubGsLkvkU

                    I don't remember what this one is made of,...but it's solid!
                    https://www.youtube.com/watch?v=h1qWAe7IMP8

                    Just for fun...
                    https://www.youtube.com/watch?v=l6Q4G-0_G5s
                    Speed Bag

                    Put a little Rhythm in YOUR workout!
                    *attendee: Every SB gathering so far!
                    The Quest Continues...
                    Onward to SpeedB.A.G. X! Summer 2019

                    THE 10th Year Reunion!

                    sigpic

                    The Art of the Bag

                    Comment

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