ogbad

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Richard Nakka's Experimental Rocketry Web Site

I first became aware of the Potassium Nitrate/Sorbitol (KNSB) rocket propellant some years ago, when I learned that it was being used as a …

Shooting Sports

Grant Imahara’s Ten Favorite Robot Building Blocks

When I think about all my builds over the years, I find there are a few components I use over and over again — kind of like my own personal Lego set. Here are my Top 10, and why I reach for them again and again:<p><b>1. SHAFT KEYS:</b> Yes, set screws can hold rotating gears or wheels on shafts, but they’ll …

This Video Explains Everything You Need to Know About Bitcoin in Three Minutes

What is a bitcoin? Like exactly? It's digital currency and it's been around for a while now so what's all the fuss these days? It's because more and …