Desinfectante UV! E mais do Thang, uma Impressora 3D por deposição de pó, e experiências com Super-Cola

Desinfectar as vossas gigajogas não-porosas, com este Aparelho de Ultra-Violetas, em minutos?

É bom.

Construam-no em casa:

DIY Ultraviolet Sterilization Device (UVClean)henrydmayne 

Introduction
Hi all and welcome to my very first instructable! In this step by step guide, you will learn how to create your very own ultraviolet sterilization device that can be used as either a wand, or as an automatic sterilization chamber. The device, called the UVClean, uses a special UVC bulb that can sterilize nonporous surfaces in a matter of minutes. 

https://www.instructables.com/id/DIY-Ultraviolet-Sterilization-Device-UVClean/

O Thang continua a dar-nos deias, esta para evitar catástrofes, nas vossas Engenhocas, pára o cursor, no princípio e no fim do percurso:

Safety clutch for screw drives

thang010146 

 Input: violet screw.

If the pink key is in the rectangular hole of the grey nut, it prevents the grey nut from rotation, thus the nut translates when the violet screw rotates.

When the nut block (in yellow) reaches its end position, the blue bar of V-shaped slot is pushed from its neutral position. The V-shaped slot and the red pin make the pink key leave the rectangular hole of the grey nut, thus the nut rotates together with the screw and stops pushing the nut block.

Once the screw reverses, the pink key gets into the rectangular hole of the grey nut under the action of the green spring, prevents the grey nut from rotation, thus the nut translates back 

https://www.youtube.com/watch?v=R9vVNTHpjII

Não há só FDM, também há 3D por deposição de pó, e aqui vai como fazerem a vossa própria Impressora 3D usando esta tecnologia, que não precisa de suportes:

Plan B overview, Open source 3DP printer

ytec3d

Plan B is an open source 3DP printer. It prints in powder with a special binder. 3DP printing requires no support material and prints at higher resolution than FDM printing. Printing in powder has the potential to be cheaper than most techniques, though more research into materials is needed.. 

https://www.youtube.com/watch?v=HIAddQmqlgE&lc=Ugjj0mlXZHY5h3gCoAEC.7-H0Z7-Trk-97y3oHF6r1J&feature=em-comments

A Super-cola, misturada com Maizena, faz-se num Plástico super-duro. Óptima para reparar de tudo um pouco, mas há outros Materiais a experimentar, com a Super-cola.

Super Glue And CINNAMON Has An UNEXPECTED ReactionThe King of Random 

Today we're mixing super glue, aka cyanoacrylate, with a few different substances, such as graphite, cinnamon, and baking soda. We'll also see how well you can cast coins with it. What kind of reactions will we get? 

https://www.youtube.com/watch?v=7XYPnHODt1E