(Bill Gurstelle is guest blogging here on Boing Boing. He is the author of several books including Backyard Ballistics, and the recently published Absinthe and Flamethrowers. Twitter: @wmgurst)
Back in 1960, U.S. Army Captain Bertrand Brinley published the Rocket Manual for Amateurs, one of the greatest DIY books ever written. Its cover price reads 75 cents. Buying a copy today in a used bookstore could set you back more than $100. But it's that good. (I know, I have it.)
There is a considerable amount of information on rocket motor making in RMFA. The line drawings are excellent and the writing clear and straightforward. A lot of people bought this book back in the 50s and 60s, because making rocket motors was a fashionable pastime, and there were lots of clubs and societies that would tinker around making rocket engines.
But like any high energy hobby, things could and would go wrong and people got hurt. Rocket engines had a nasty habit of blowing up in the maker's face and causing injury. There is a part of the process where the propellant is rammed into a tube and that's pretty dangerous. (I personally know of a couple people who hurt themselves this way.)
So, the activity changed, and rocket people were encouraged to buy commercial rocket motors instead of rolling their own.
That is indeed much safer. But I think you lose something when you give up the core part of the activity. That's why in Absinthe and Flamethrowers I provide instructions for creating a small but powerful rocket motor wholly out of stuff available at Home Depot or SuperTarget. There's just something so ... satisfying about homebrewing a rocket with stuff you got at Walmart.
Brinley's book contains instructions for making for "micrograin" rocket engines (pulverized zinc and sulfur ramrodded into a steel container.) I tried it and it burns like crazy. Whoa nelly, that's some hot stuff. Probably too dangerous for an amateur.
In University of Pennsylvania psychiatrist Jody Foster’s new book The Schmuck in My Office: How to Deal Effectively with Difficult People at Work, she shares sound advice on dealing with narcissistic co-workers. From an excerpt at Quartz: On a day-to-day basis, appealing to this person’s egocentricity can be very effective. The occasional recognition of the […]
Kory Stamper, author of the new book Word by Word: The Secret Life of Dictionaries describes three criteria Merriam-Webster uses for inclusion of words like truther, binge-watch, photobomb and the 1,000 other words that make the cut in a typical year.
I read pretty much every Disneyland history and fact book I find. Chris Strodder’s The Disneyland Encyclopedia: The Unofficial, Unauthorized, and Unprecedented History of Every Land, Attraction, Restaurant, Shop, and Major Event in the Original Magic Kingdom lives up to its massive title. A simple alphabetical listing of just about every First through Fifth order-of-interest […]
Even though credit cards now feature an EMV chip for securing transactions, they still have to include the magnetic strip for compatibility with older point of sale systems. Because of this, there’s no way for the chip’s new security capabilities to protect against card skimmers in the wild.How do you protect yourself from legacy-technology-induced fraud? […]
As the old saying goes, “You should sit in meditation for 30 minutes every day. Unless you are too busy, in which case you should meditate for an hour.” Since most of us have an endless list of things to do and people to see, carving out quiet time can feel impossible, especially when most […]
The Bragi Dash Truly Wireless Smart Earphones are far more than your run of the mill Bluetooth earbuds. While the earpiece design makes these earbuds ideal for exercise and activity, and passive noise cancelling is conducive to a more serene listening experience, these buds go well beyond just playing music.First of all, they can actually […]