RE: [rp-ml] Thoughts on turning loose plaster into a gelatinous type material?

Printing a translucent overmold that is flexible can and has been done using the Objet connex technology resulting in inner bone structure showing as a different, stiff material. You can see some of the examples here:

http://www.growit3d.com/gallery/?album=1&gallery=20&nggpage=2

As far as making unbound powder just "flow away" on z-corp, thus only leaving the "printed" sections, I do not know of a material or process that can do this without affecting the fragile printed sections before they are infiltrated. There are features within z-print that can create a supporting cradle that is not bound to the part that might help.

Regards,

David Gurrola

GROWit LLC
20918 Bake Parkway #106
Lake Forest, CA 92630
Ph: (949) 305-4004
F:  (949) 305- 4915
www.growit3d.com

 
-----Original Message-----
From: owner-rp-ml@rapid.lpt.fi [mailto:owner-rp-ml@rapid.lpt.fi] On Behalf Of David K. Leigh
Sent: Monday, July 11, 2011 9:59 AM
To: Buddy Smith
Cc: rp-ml@rapid.lpt.fi
Subject: Re: [rp-ml] Thoughts on turning loose plaster into a gelatinous type material?

The easiest way is to model the bones as a 'negative' inside of the scanned foot - creating a cavity for the bones. This has been done in SLA where the model is clear and then white resin or paint can be applied inside the cavity to illustrate the bones.

Best functional method is to over mold the flexible material with a laser sintered or similar high strength white polymer.

Sent from my iPad

On Jul 11, 2011, at 5:38 PM, "Buddy Smith" <buddy.smith@ieee.org> wrote:

> Hi all,
>
> I'm working with a podiatrist who wants to 3D print CT scan data of feet.
>
> One idea I had would be to print using a plaster based machine like
> the Z-Corp. After the print, I'd like some way to turn the support /
> non-set plaster into a gelatinous material, so that the floating loose
> fragments that are printed will still be there.
>
> Does anyone have ideas of a process that would turn loose plaster into
> something roughly gelatinous? Or some method to replace the loose
> plaster slowly, without disturbing small fragments?
>
> --buddy
>
Received on Mon Jul 11 20:13:36 2011