covid-19 faceshield stacked 3 hole punch 13mm tall
thingiverse
This is face shield based on the Prusa RC3. A couple change include shortening to 13mm from 20mm, curving the hooks. The punch holes are the use standard the hole punch. The stack is spaced 0.3mm. So recommended layer height is 0.3mm. "In regions that use the US Letter paper format (8 1⁄2 by 11 inches, 220 by 280 mm); United States, Canada, and in part Mexico and the Philippines), a three-hole standard is widely used. The holes are positioned symmetrically, with the centers 4 1⁄4 inches (108 mm) apart."- Wikipedia.
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