Re: [CAD_CAM_EDM_DRO] RotoCasting - a simple way to make Bellows and other hollow parts

Well, I've looked at your site.

I don't see the point in making an "extra" inner shell (filling the cavity
produced by coating the model with clay or whatever). Why not just Cast the
outer shell in two (or more for complex parts) over the original model and
use that for the rotational casting? That would save a lot of extra work
and material.

How cheap are those double axis rotational casting machines?


Smoke

>I prepared a simple tutorial about the roto-casting process which could be
>helpful in making bellows with a choice of several materials.
>The URL is: http://www.korumdesign.com/rotomolding/rotocast.html
>The pictures are quick roughs but should be clear enough to understand the
>process.
>I will check for some other links available, I think you should find some
>other informations starting from www.smooth-on.com or from
>www.computersculpture.com
>I'm in the process of making the mold for my own bellows, still in the
>design process, but I can tell you that they will be around 325mm (W) x
>650mm (L) x 100mm (H).
>650mm is the extended range.
>
>Paolo Velcich
>industrial designer
>pavel@...
>
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