The incredible science of acoustic levitation

This is truly an revolutionary video! Did you know that objects can be levitated and moved around in mid air, using only sound? In this incredible video from Yoichi Ochiai (YouTube Channel 落合陽一) we see the first successful attempts to acoustically levitate small objects like styrofoam balls, water droplets, matches and even metallic nuts! Perhaps one day we can even levitate big objects like skateboards or cars? What would you like to levitate with this technology?

How to powder coat at home

Whenever big industry needs to paint a metallic object, they tend to prefer powder coating. Powder coating is the process of using a static charge to electrically attract paint particles onto an objects surface evenly and reach tight spaces. It is particularly valuable in mass manufacturing since it is dependable and makes painting easy to automate with robots. But since the process is a bit more complex then just using a spray can, most hobbyist never powder coat any of their parts. But if you really want your parts to have that high production quality look, you should definitely watch this video from NYC CNC that demonstrates how you can use technique at home!

How electricity is turned into light

From MinutePhysics comes this excellent video that explains how different kinds of light sources work. This is very useful for anyone who needs to decide which types to use in their project, as well as anyone who is generally interested in how they work. This is of course just a very basic and metaphorical video but there is a lot of more information to find out there. None the less it is a very interesting and easily understandable summary.

 

Polymer clay for beginners!

Polymer clay is a wonderful material! Soft and malleable as any modelling clay, but pop them into an ordinary oven and they turn hard and rigid. It is in many cases the perfect material to make not only ornaments, but also mechanical parts like levers, gears and wheels. This is just the first part of a video series from PuddingFishCakes that teaches the basics of handling polymer clay, and we look forward to adding the others to our collection. So if you don’t want to miss a video, subscribe to PuddingFishCakes, and while you’re at it, subscribe to Crafters University as well to see all our future video blogs!

How CPU´s are made

What would electronics be without central processing units? Or our society for that matter? But how are these wonderful little black blocks made? While this is not a DIY video, and you are unlikely to have the machines necessary to make integrated circuits, it is still extremely interesting to follow the design process shown here. At the very least, this video might give you a deep appreciation of what goes on in those little black boxes.