[Bruce Wayne] [Shenzhen] wanted a garment that would protect him from a jolt, while keeping him toasty in the cold weather. Well that’s not it at all, these are merely two of his projects using the same material in different ways.
We’re going to start with the infrared image on the right. This is a vest with chest and back pieces made of carbon tape totaling two meters of the material swirled on each side. Hook it to a power source and the carbon tape warms the wearer. Portability is something of an issue as each “element” takes 36 W of power (3A at 12V). Click through for advice on how to interface the tape with the power source.
Onto the main event… avoiding electrical shock when you get all up in the grill of that mall cop you’re hated for years. [Shenzhen’s] jacket is really just an ordinary long-sleeved coat. But he separated the lining at the bottom seam and used fusible material to hold the carbon tape in place. The carbon tape provides a better conductor than your skin, preventing the shock from stunning you as it was intended. This really is the thing of superheroes, or former editors who should have known better.
Why toast your bread evenly when you can burn low-resolution images instead? Meet the Super Mega Mega Toaster, a University project created by [Scott van Haastrecht] for his Creative Technology course.
Now you may be thinking that this has been done before. And indeed, a bit of searching will lead you to a post about toasting Jesus. But that is a one-shot toaster hack which simply used a stencil to block heat to create a certain pattern. This is a mechanical overhaul for the toaster concept. It uses one row of six heating elements. Each is connected to a servo motor which moves the element next to the bread or away from it based on the pattering being printed. A stepper motor then moves the bread up so that the next row can be printed. All of this is mounted in a laser-cut wood frame which makes us just a bit nervous because the purpose of the elements is to burn stuff.
See a demo of the toaster, as well as its internal components in the clip after the jump.
Continue reading “Low-resolution toaster prints on slices of bread”
When working with chemical reactions it may be necessary to test the purity of the components you’re using. This is especially true with hobby chemists as they often acquire their raw materials from the hardware store, garden center, or pool supply. [Ken] figured out how to get around the $500 price tag of a commercial unit by building this DIY melting point test apparatus.
In this image he’s using a thermocouple to monitor the temperature of the melting surface, but mentions that you can do this with an inexpensive dial thermometer and will still have great results. That melting surface is the hexagonal head of a bolt which he drilled out to provide a concave surface for the test compound. Inside the PVC pipe is the heating element from a 40W hot glue gun. He wrapped it in fiberglass fabric which is sold in the plumbing supply to protect the area around pipe joints during soldering. The rotary light dimmer feeds the electricity to the element, allowing for adjustments to the ramping speed.