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Is this structure achievable/ factible?

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  • Is this structure achievable/ factible?

    Hi everybody!

    this is my first post, I've been looking for some days now a forum about metal/ welding and I got here today.

    I like to model figurines with clay and polymer clay as a hobby, sometimes these are purchased, sometimes I even get some commisions. I'm making now a cartoon figurine from a tv series that is quite difficult to achieve with clay only, he has some really thin spider legs (see pic), and I thought about making these with metal, but I have some questions, as I never worked with metal and I am kind of lost.

    I bought some aluminium bars (hollow and solid), and I'm planning to buy some 2phase metal glue, bearings and steel mini spheres (but these are expensive, and I'd like to assure that the structure is achievable).
    As you can see in the pic, I got to use the bar, cut it like 5 cm (2 inches), attach a tread, then a stell ball, then another tread and then another bar... and repeat until the structrure is complete. I would use hollow alluminium bars for every part except the distal part, the part that touches ground, as I would have to... sand? or make it thiner at the most distal part, with a dremel like tool (not sure if this is possible either).

    The junction of the joints would be made with this 2 phase Nural27 'glue'.

    the question is: which is the best metal to do this? I chose alluminium but maybe there is another better one. And more important, is this achievable? will it be solid, hardy for shipping once it's welded? should I use hot welding? I never worked metal so I'm kind of limited.

    thanks for every tip or input you can tell me!

    ps.
    6 mm is like 0,236 inches
    8 mm is like 0,315 inches
    2,5 mm is like 0,098 inches


    pablo
    Last edited by pabletek; 07-29-2018, 04:43 AM.

  • #2
    If you are not familiar with welding, aluminum is a poor choice of metals as welding it require a little more expertise (skill) than plain steel... Easiest learning curve would be to use steel and do a quick learn about MIG welding..... IF you are doing relative small sculptures and just require a armature inside for support material it is not to critical ( steel vs aluminium) and even low end "MIG" welder can assemble proper inner skeleton...

    http://weldingtipsandtricks.com

    Another option using steel is using oxygen/acetylene (gas) welding to weld/braze with steel/brass rod..... Many metal sculptures are done with "gas" torch...

    Dale
    Last edited by Dale M.; 07-29-2018, 09:25 AM.
    Lives his life vicariously through his own self.

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    • #3
      I'm liking a glue/epoxy option. You don't need the fusion of welding if it's not going to be handled without care. Even "easy" welding is going to have a LOT of postweld joint shaping.

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      • #4
        Hi guys, thanks for the replies,
        Dale, I've been having a look at the the stuff you said, but I think it's too 'professional' for me... I probably wont have the skills and sure don't have the equipment for MIG welding... the aluminium bars are intended to be the final result, not skeleton for clay... as the spiderlike legs of the figurine have a robotic look, I thought using metal and not clay would be the best option. Besides, spending more than $ 50-60 would result in not profitable, as I will probably sell this figurine for $100.

        Mac, do you think then that epoxy like glue would fix the structure? It's gonna be handled with care but it has to go from Spain to the USA in a box, so I'm afraid it tears apart in the shipping...

        Also... would it be easy the 'sanding' of the aluminium to give the sharp look in the more distal limb?

        thanks again,
        Pablo

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