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(23 Dec 2015,
<noautolink> ---+!! Vacuum Forming %TOC% This sub-web contains information on vacuum forming of thin plastic sheets as a way to fabricate tactile surfaces. <blockquote> Vacuum forming is a simplified version of thermoforming, whereby a sheet of plastic is heated to a forming temperature, stretched onto a single-surface mold, and forced against the mold by a vacuum (suction of air). -- [[%WP_Vf%][Vacuum forming]] (WP) </blockquote> I've just started looking into this topic; so far, it appears that: * Vacuum forming has been used successfully to create tactile surfaces. * [[%WP_Delrin%][Delrin]] seems like a good choice for the molds. <p> Although it is a bit expensive (~$10/sq. ft.), it has some very nice characteristics. It can be cut and engraved by a CO<sub>2</sub> laser. It is hard, durable, and handles temperatures up to ~200 C. However, like Acrylic, it tends to deform when heated. * It may be possible to engrave the mold as a negative. <p> If this could be done in vector mode, it would be _much_ faster than raster engraving an image. It might also produce crisper results, if the touchable surface matches the mold more closely. To be continued... <!-- * Set WP_Delrin = %WP%/Polyoxymethylene * Set WP_Vf = %WP%/Vacuum_forming --> %ZB%
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Topic revision: r68 - 23 Dec 2015,
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