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    Discussion in 'Suggest a forum topic' started by productdesignchris, Apr 4, 2019.

    1. productdesignchris

      productdesignchris New Member

      Apr 2019
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      The photo is my previously designed concept: the idea is you drop metal ball down the slide (a conical spiral) and the ball is collected in the tray at the bottom. Its designed to be able to be placed in the corner of the average office desk (e.g. its a office desk marble run).

      My question is: what process will I use to manufacture the spiral slide and what can I make it out of?

      Ideally, I'd like to have it to have a fairly clean aesthetic look (e.g not just bend some PVC pipe) as its going to marketed as a nice ornament to have on your desk. I'm not too worried about the supports or the base but creating the conical spiral slide shape is giving me a lot of grief. I know I can 3D print the shape (as I have a model) but I don't think this is the most cost effective strategy and I have to produce a document of how much it will cost etc. Should I adapt the design slightly to make it easier to make? If so how should I do this?

      Can I CNC mill the shape out of wood or metal? Can I injection mould it out of plastic? Can I use a set up like this ( ) and just using half a pipe? Could I set up a wood turning rig?

      3d print small file.JPG fusion render small file.JPG render of desk toy.JPG
    3. s.weinberg

      s.weinberg Well-Known Member EngineeringClicks Expert

      Nov 2012
      Likes Received:
      Similar products I've seen (generally toy garages - but there are similar marble runs out there: one google hit -

      are made from multiple pieces that snap together.

      It would probably take some work to get right, but you might also be able to make this from a long plastic strip that is heated and bent to form the final shape. Or some kind of winding process from a malleable metal similar to how large springs are made?

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