Eschew Glue: Make Your Own Sticky Liquid Glass Instead [Video] Remove Tarnish from Silver. If you have any objects made from silver or plated with silver, you know that the bright, shiny surface of silver gradually darkens and becomes less shiny.
This happens because silver undergoes a chemical reaction with sulfur-containing substances in the air. You can use chemistry to reverse the tarnishing reaction, and make the silver shiny again. For this experiment you will need: a tarnished piece of silver a pan or dish large enough to completely immerse the silver in aluminum foil to cover the bottom of the pan enough water to fill the pan a vessel in which to heat the water hot pads or kitchen mitts with which to handle the heated water vessel baking soda, about 1 cup per gallon of water Line the bottom of the pan with aluminum foil.
Heat the water to boiling. Pour the hot baking soda and water mixture into the pan, and completely cover the silver. Almost immediately, the tarnish will begin to disappear. When silver tarnishes, it combines with sulfur and forms silver sulfide. 42 People You Won't Believe Actually Exist. Too Hot to Handle: Backyard Foundry Melts Cans in Seconds. Gathering and recycling your aluminum cans is great for the environment, but not so much fun.
YouTuber Grant Thompson, also known as The King of Random, experimented with more than 10 prototypes to come up with a simple, inexpensive (and super-duper dangerous) backyard foundry. He uses it to melt soda cans into make aluminum ingot, which he then pours into a sand mold to create a cool cast aluminum toy. The foundry is composed of sand, plaster, and a galvanized steel bucket. It can be used the same day you make it, and all told the project will cost around $20.
When it isn’t being used, it can be cleverly disguised as a flowerpot on your patio. In the meantime, this video shows the foundry in action melting soda cans like they’re ice cubes. The Kid Should See This. Modular, self-assembling robots from EPFL and MIT "Furniture that changes functionality completely depending on the needs of the person...
" Like life-size LEGO pieces, these robot modules can gyrate and reconfigure in order to create furniture or move furniture in an... Flying Robot Orchestra Three words – Flying Robot Orchestra. From KMel Robotics: The hexrotors create music in ways never seen before, like playing a custom single string guitar hooked up to an electric guitar amp. Magnetically Actuated Micro-Robots This magnetically-controlled micro-robot is in charge of gluing things. Bionic Kangaroo Festo HQ, the engineering team that brought us Aqua Penguins, Aqua Jellyfish, dragonfly-inspired BionicOpters, and a robot that flies like a bird can now add Bionic Kangaroo to their list of... Wind up bots Director Fernando Livschitz of Black Sheep Films makes super-sized tin toy robots real as they walk and roll around the streets of Buenos Aires: Wind Up Bots. Anthropomorphism in Robots.
Wonder How To » Show & Tell for Creators & Doers. Instructables - DIY How To Make Instructions. Make Thermite out of Sand. Food Recipes. Learn Macrame. Learn Macrame is a knot gallery of detailed instructions for tying a variety of basic as well as unique knots.
You should use scrap pieces of material and practice each of these decorative knots individually. The decorative knots found in most Macrame patterns are listed below. Just click on the images of the knots you want to learn. The step-by-step process, with photos, will come up in a new window. To learn Macrame properly, I recommend that beginners practice all the basic knots, which are labeled Basic or Vintage above the image. Vintage knots are those decorative knots used in the late 1800's to mid 1900's. After you have practiced, choose an easy project from the many free patterns in the other areas of this site. Please visit the home page for instructions on how to convert these pages to a PDF prior to printing.
Knots. How to Tie Decorative Knots. Wonder How To » How To Videos & How-To Articles. Hacked Gadgets – DIY Tech Blog. How to turn "water" into marbles.