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Topic Tag: sun

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Hi everybody, this pretty dated video is always inspiring. https://youtu.be/ptUj8JRAYu8 I think that this could be a good way for making molds for metal. At the end also sand (glass) is a good plastic material, relatively easy to find... In many developing countries sun is pretty accessible and sand too... What do you think? Another good alternative would be to feed the 3d printing process with a syringe filled with clay...
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