Monday, July 15, 2024

working with silicone

Jonathan Reynik

Dear Listmembers:

I am involved in two design projects that will surely require the use of silicone and am looking for feedback with respect to silicone injection molding, ready made silicone sheets that can be purchased, and maybe 3d printing with silicone. To date my only experience with silicone is limited to using ready made items such as liners, knee sleeves, burn garments and socks, and foot related products as well as having silicone models of partial feet and fingers made from plaster models, i.e., I am a novice with respect to silicone fabrication.

Nevertheless the first project involves foot correction and loading. I have finalized the model making approach and am now looking for a commercially available injectable silicone that will be tear resistant and durable at a minimum width of 3 mm.

The second project involves the upper torso and the silicone will either be cut from ready made sheets no more than 2mm thick or 3d printed and have to support unrestrained weight of up to 2 kg from a shoulder strap. The strap itself will be between 2.5 -4 cm wide and no more than 2mm thick.

Ideally I would like to find something with a Shore A=10 value since everything I have read indicates it is very similar to human flesh. My concern is tear strength at such small thicknesses and widths.

Thanks in advance and looking forward to your thoughts.

Kind regards,

J. Reynik, LPO

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