Thursday, December 31, 2009

How to Make a Leyden Jar and Electrostatic Generator


When the cold weather makes the air so dry, it's impossible to touch stuff in the house without getting a little shock. If you want to take that making a spark thing to the next level, then check out the next issue of Make Magazine (Make 21.) I show to how to create some really big-ass sparks by building a friction based static electricity generator and a Leyden jar.

The longer I worked on this project, the more excited I became with it. It took me a while to figure out how to best fabricate the Leyden jar and electrostatic generator and had to go through several iterations before it worked the way I wanted it to. The jar really holds a charge and it's unbelievable how big a spark that thing makes! If you accidentally discharge it with your hand when you're not expecting it, look out! It's quite a shocking experience.

All the directions are in the upcoming Make. I also made a video that's pretty detailed. See it at:
http://www.youtube.com/watch?v=H5wr1Ishmx0  or click on the thumbnail photo below.



PS Thanks to everybody who wrote me with good wishes concerning my health. I'm going to be fine.

Thursday, December 03, 2009

England's Daily Telegraph's take on Absinthe and Flamethrowers

America's DIY ballistics king Bill Gurstelle shoots from the hip about health and safety

Tom Leonard meets the DIY artillery king at his 'barrage garage'.



The above headline is from today's (Dec 3, 2009) Daily Telegraph, England's largest daily newspaper. There's an in-depth article on Absinthe and Flamethrowers and goes into depth about the importance of reasonable risk taking. The reporter, Tom Leonard, is a terrific writer and the photographer took some very interesting pictures.

I'm honored and humbled to be referred to as " America's DIY Ballistics King"

The article on the Daily Telegraph website is here. I've also made it available on my blog, Absinthe and Flamethrowers.

Tuesday, November 24, 2009

How to Build a Potato Cannon Wall Poster



Here's another poster that looks great on the wall of just about any workshop, classroom, or bedroom: How to Build a Flamethrower. I developed this poster with my professional graphic designer colleague, Jon. Huge: 3' X 2', full color. Great to have, great to give.

The poster covers the design and construction of a powerful spud gun, and covers a variety of ignition methods including taser-powered, piezo-electric, and good ole fashioned flint and steel. I've made *lots* of these and my best ideas are all here. Enjoy a 300 foot blast!


Check out the "How to Build a Flamethrower" Poster as well


You can see more and buy it at www.ballisticom.com

Thursday, November 19, 2009

How to Build a Flamethrower Poster

I'm excited to say my new poster: How to Build a Flamethrower is ready to go! I developed this poster with a professional graphic designer. It's full color and measures 36-inches high X 24-inches wide. Everything you need to know (with a bit of web support) to build a kick-butt, working flamethrower! A flame 15 feet high!

It's the perfect holiday gift for the person who loves stuff like this.




It looks cool on the wall of your workshop, bedroom, or classroom.

Find out more at www.ballisticom.com

Wednesday, October 28, 2009

Car Launching


I often head to northwestern Wisconsin because my brother has a lake cabin there. Interesting place, rural Wisconsin. Go into any of the bars or taverns up there (believe me, there are a whole lot) and you immediately get the sense that the level of cultural sophistication is not what it is in say, Manhattan or West Palm Beach. Or Omaha, Peoria or Wilkes Barre either.


But that's not a bad thing. The locals are a quite creative lot. Here's an example. It's a pastime called "car launching."

It is exactly what it sounds like. This year several cars, trucks, and two school buses were launched. I'm absolutely going to be there next year.

See for yourself below: Special extended video of the event from my friends at KARE!11: click here.

Tuesday, October 27, 2009

Marshmallow Shooter Video on Kare -11


Today on KARE-11's Showcase Minnesota show, Rob Hudson and I build a marshmallow shooter, one of the safer projects from the many available in Whoosh Boom Splat, the enthusiasts guide to making projectile shooters.

Here's a link to a video of the segment - It's pretty good; we had fun nailing the camera man! Easy and fun to make, and costs about $3 to make.

http://www.showcaseminnesota.com/show/client_article.aspx?storyid=827311

Monday, October 26, 2009

Kurt, Roger, Ryan and David build a trebuchet - and it's a big one!

A few of my friends in St. Paul got together and build a really enormous trebuchet, a type of medieval hurling machine or catapult. I knew that Richard Chin, the great features writer for the St. Paul Pioneer Press would immediately understand the import of such an undertaking. I called him up and told him about it and he got out there. This story appeared in the yesterday's Sunday paper. 

Have trebuchet, will fling
Four friends go medieval and build a 'siege engine' (basically a catapult) because they can
By Richard Chin

"This is kind of chancy. We've never done anything this wide and big," warned Roger Bacon. "OK. Let's do it."
There was a countdown, a whoosh, and suddenly a wheelchair was soaring hundreds of feet in the air, hurtling through the skies above Hugo at an alarming rate of speed.
That's what happens when four 30-something guys decide to build a trebuchet, a siege engine resembling a catapult originally designed in the Middle Ages to pummel castle walls with projectiles.

There are no castles in Hugo, so the builders of this trebuchet are content with seeing how far they can fling a bowling ball. They're at about 700 feet so far. They're hoping to reach 1,000.

They're also testing the flight and crash-landing characteristics of obsolete consumer electronics by launching old television sets, a VCR and a computer. Thanks to the Hugo trebuchet, mankind now knows that a flying microwave oven will bounce about five feet into the air after hitting the ground.

Eventually, the trebuchet team hopes to send a clothes dryer into flight.

Built by Bacon, of White Bear Lake; Kurt Modert, of Hugo; Ryan Krueger, of Maple Grove; and David Proehl, of New Hope; the machine is just the latest and biggest, but not necessarily the craziest, project taken on by the four friends.

"We like destroying stuff," Bacon said.

They used to combine snowmobiles with upholstered furniture, resulting in a La-Z-Boy mounted on an Arctic Cat and a couch that was towed on skis.

They've shot each other with potato cannons loaded with hot dog buns and marshmallows and went golfing with a motorized golf caddy made from an old snowblower.

Then they went through a phase in which they took plastic bags filled with a mixture of creamed corn, elbow macaroni and oatmeal and concealed them under their coats.

They would go to bus stops or the entrances of movie theaters and pretend to feel queasy. While a friend would make helpful comments like, "I told you that shrimp wasn't cooked," they would bend over and spew a stream of pseudo-puke on the sidewalk to the horror and disgust of bystanders.

 
So when Modert decided in 2008 that his New Year's resolution would be to build a trebuchet, maybe the only thing that surprised his friends was how big it would be.

"I thought it would be a desktop model, you know, something to launch paper balls at the office," said Modert's girlfriend, Sue Ruby, of Minneapolis, who wants the record to show that she met Modert after he was done with street-theater vomiting.

Modert actually planned to build something that would go in the back yard of his mother's 12-acre property in Hugo.

Construction began in the spring of 2008 with the erection of a massive wooden frame capable of supporting an 18-foot throwing arm.

It was built with construction lumber, landscape timbers, recycled aluminum plates and salvaged panels from a garage door.

"It's stuff you can get at any Menards," Bacon said. "Kurt doesn't have much of a life, so he was working on the trebuchet all the time."

The swinging counterweight used to propel the arm was fashioned from an old 265-gallon fuel oil tank they got for free off Craigslist.

They spent a lot of time with calculators trying to figure out what to put into the tank to get the best performance. Water leaked. Navy beans weren't very heavy. Mercury would give more than enough heft, but "it turns out it would be difficult to get a large amount of mercury," Krueger said.

They ended up putting sand in the tank, about 1,300 pounds so far. For more power, they can get it up to 3,750 pounds.

The arm is moved with an electric hoist, and it's released by a trigger mechanism that was fashioned from a device originally used to hold and release a theater curtain rope. That piece of hardware cost less than $5 at an Ax-Man Surplus store.

At one point, Modert's mother asked where they were going to move the trebuchet when they were done.

But the machine, situated only a few yards from the house, is anchored with lengths of pipe driven several feet into the ground.

"This one is permanent. It's too big to move," Modert said.

The builders are not sure how the $2,500 project will affect the home value.

"The tax assessor did come out earlier this year, and we're waiting to see what he says," Bacon said.

 
Bacon said when asked if any changes had been made to the house, Modert's mother told the assessor, "Well, there's less shed and more trebuchet."

"At every step, it was like 'Let's take it one step bigger than we originally planned,' " Proehl said.

"It kind of got a little carried away," Modert said. "Why do it if you're not going to do it big?"

"Most people who build stuff like giant catapults are doing what they're doing because they're seeking a challenge, the challenge of creating something big and wonderful in a physical, tangible way," said William Gurstelle, a Minneapolis author of books such as "Backyard Ballastics" and "Absinthe & Flamethrowers: Projects and Ruminations on the Art of Living Dangerously."

The original ammunition used by Modert and his friends were defective bowling balls, acquired for free at local bowling alley pro shops. They started arcing over the field behind Modert's boyhood home in August.

"They haven't told you about the mistakes they made," Ruby said.

Once, a bowling ball was tossed about 150 feet in the wrong direction.

"Toward where my car was parked," Ruby said.

The team uses a number of safety measures to make sure no one gets hurt. But when asked if it's dangerous, Bacon said, "Yeah. Well, no. Yeah."

"There's the potential for things to break," Modert said.

During a recent hurling session, a bowling ball was launched almost straight up in the air, sending everyone ducking for cover.

"All right. So let's not do that one again," Krueger said.

Friday, October 23, 2009

Tricked Out Motorized Couch

A guy in northern Minnesota built a way cool, tricked out, motorized couch and drove it to the local bar. But he got so drunk that he crashed it into a parked car.




Note the headlights, surround sound system and cup holders. It's powered by a lawn mower engine which makes me think it couldn't attain much speed, given how heavy it is. The police chief "estimates" it could reach 15 to 20 mph. I can't imagine that being true. Anyway, the police confiscated it. Too bad.

Full story from the Star Tribune:

The operator of a La-Z-Boy chair converted into a motorized vehicle -- complete with a stereo and cup holders -- has admitted that he crashed the piece of furniture after leaving a bar in Proctor, Minn., extremely drunk.

Dennis LeRoy Anderson, 61, of Proctor, pleaded guilty Monday to hopping on the chair on the night of Aug. 31, 2008, after visiting the Keyboard Lounge, then crashing into a more traditional vehicle in the parking lot. Anderson's blood-alcohol content was 0.29 percent, more than three times the legal limit for driving in Minnesota.

Deputy Police Chief Troy Foucault said Thursday that the chair is "quite decked out." Along with the stereo and cup holders, it is driven by a converted gasoline-powered lawnmower, and has a steering wheel, headlights and a power antenna.

Foucault estimated that the La-Z-Boy can top out at 15 to 20 miles per hour. A National Hot Rod Association sticker adorns the headrest.

The chair was impounded and will be sold at the next police auction.

"We have quite a few people calling about buying it," said Foucault, who half-seriously acknowledged that he is tempted to bid on it, except that "I have kids who would take it out and drive it on the street."

Anderson admitted to police that he had been drinking at home, was leaving the bar and had drunk eight or nine beers that day before getting on the La-Z-Boy and crashing it into a Dodge Intrepid parked outside, Foucault said. Anderson was treated for minor injuries and given a field sobriety test, even though he pleaded several times with the officer to "give him a break," according to the police report.

"He failed everything," Foucault said, which led to Anderson's arrest and seizure of the chair. The officer on the scene checked Anderson's driver's license and determined that it had been revoked because of a previous drunken-driving conviction, according to police.

Anderson, who does auto body repair work out of his home, was sentenced Monday to 180 days in the St. Louis County jail or at the Northeast Regional Corrections Center and was fined $2,000. The jail time and half of the fine was stayed for two years of supervised probation with conditions that include a chemical dependency assessment, random testing and 30 days of electronic monitoring.

Saturday, October 17, 2009

New How-To Video on Electrostatic Generator and Leyden Jar


I've filmed a new video showing how to build an electrostatic generator and a leyden jar. Watch it at:
http://www.youtube.com/watch?v=H5wr1Ishmx0


If you've never messed around with Leyden Jars, you should; they are immense amount of fun. I accidentally shocked myself yesterday and it nearly knocked me over, so if you make one, don't make it too big. Eventually all Leyden Jars wind up shocking their owners.

Tuesday, September 22, 2009

12 Shocking Ideas That Could Change the World


This month's Wired Magazine cover article is entitled  "The
Smart List: 12 Shocking Ideas That Could Change the World."

My essay, entitled "Take Smart Risks," is number 11, (between
Gregg Easterbrooks "Embrace Human Cloning" and Robert Gates
"Overhaul the Pentagon.")

You can read the entire article in the new October issue of
Wired, or online (for free!) at
http://www.wired.com/techbiz/people/magazine/17-10/ff_smartlist#create bookmark

Friday, August 21, 2009

How to Choose a Throwing Knife

In my other blog Absinthe and Flamethrowers, I answer a question a reader posed about how to buy throwing knives.
I was just wondering which company sells the best throwing knives, or which one you trust.
also how much does a good set of 3 usually go for?
First, what exactly is a throwing knife? Wikipedia sez:
Throwing knives are knives that are specially designed and weighted so that they can be thrown effectively. They are a distinct category from ordinary knives.

Throwing knives are commonly made of a single piece of steel or other material, without handles, unlike other types of knives. The knife has two sections, the 'blade' which is the sharpened half of the knife and the 'grip' which is not sharpened. The purpose of the grip is to allow the knife to be safely handled by the user and also to balance the weight of the blade.

When I first started throwing I bought three fairly smallish knives and they were pretty hard to throw consistently. so, I upgraded to larger, heavier model and things were much easier.

From www.absintheandflamethrowers.com:

So, you want to learn how to throw knives? It pays to start with good equipment. The most important thing is to use knives made for the purpose. They should be neither too heavy or too light.


Choosing a knife. The type of knife you choose will have an incredible impact on how much you’re able to enjoy knife throwing. Keep in mind that quality throwing knives do not have a handle. The blade is the throwing knife.
▪ Size: Knives that are between 12”-16” are a good size. They aren’t too big and not so small that you’d have to throw harder and strain to watch them in flight.
▪ Weight: Knives of the above size will fly fairly undisturbed from wind and make a satisfying sound when they hit the target.


more at http://www.articlesbase.com/extreme-sports-articles/knife-throwing-so-you-want-to-be-a-knife-thrower-470112.html

Thursday, August 06, 2009

Speed Week at Bonneville Salt Flats


The Bonneville Salt Flats - A whole lot of flatness!

I'm guest blogging on Makezine.com this month. I'm excited for the opportunity because it gives me a chance to provide some additional information about some of the stories I've done for Make Magazine previously.

In this month's Make Magazine (Issue 19) I've got a piece on Speed Week, the gathering of speed enthusiasts that meets in Bonneville Salt Flats near Wendover Utah to celebrate all things that go fast on the ground.

The Make Magazine piece focuses on Belly Tank Racers, which are fast cars made from the aluminum fuel tanks of military airplanes (they are highly aerodynamic so they are perfect for car bodies.) The men who make them, make them from scratch, and take them to speeds exceeding 200 mph. Now that's some fine work.

Here are some additional pictures of those way cool belly tankers.

This is Gary Calvert's belly tank racer.


Belly Racer's Engine



Here's the interior


Here's me inside it.


Belly Tankers are "open wheel" machines meaning there is no fairing or cowling covering the tires.


Working on Steve DiMartino's Jesse's Girl just before racing


Ready to race. The belly tanker gets a push start and then streaks across the desert.

Thursday, July 30, 2009

How to Make a Sazerac Cocktail


In 2008 the Louisiana House of Represenatives voted to make the Sazerac the official cocktail of New Orleans. It’s a great mix of flavors and packs a kick. A favorite with those who understand the art of living dangerously.

• 1/2 cup ice cubes
• 1 sugar cube
• 3 dashes Bitters
• 2 ounces rye Jim Beam or Old Overholt RYE (not bourbon) whiskey
• 1/2 teaspoon of absinthe
• lemon twist

Chill an old-fashioned glass by filling it with ice and water. In second old-fashioned glass, mix together sugar, bitters, and just enough water to dissolve the sugar. Stir. Add cognac or whiskey and remaining ½ cup ice, and stir well, at least 15 seconds. Take the chilled glass, discard ice and water and pour in absinthe. Swirl it around so the absinthe coats the interior of the glass. Add rye whiskey mixture into the chilled, absinthe-coated glass. Add lemon peel and enjoy.

Wednesday, July 22, 2009

How to Make an Arc Light

Most people think Thomas Edison invented the electric light. Nah. Edison invented the incandescent light bulb, but electric lights were invented about 70 years earlier by Sir Humphrey Davy. His device was (and is) called an Arc Light.

Arc lights are extremely bright. Not particularly efficient mind you, but they are certainly bright. When I was going to high school in the 70s, there were arc light movie projectors in the school auditorium.

WWII style searchlights were arc lights as well. Each search light piercing the night sky over London searching for Stukas and Junker bombers were the equivalent of a 13,000 watt incandescent bulb and were able to throw a beam on something five miles away.

Click above on the picture above or browse to http://www.youtube.com/watch?v=wY06G2iSR8M for a video of an arc light I made that uses carbon rods from a non alkaline battery and a 12 volt transformer. The video shows how it's made and more info is available in an upcoming issue of Make Magazine.

Note: If you make one, don't look directly at the arc without eye protection -- avoid the UV rays

Tuesday, July 14, 2009

A new television gig

I've been itching to get back on the small screen now that I've had a taste of it when I was doing Make TV. I'm getting that scratched, at least a little bit as I've become a semi-regular on the KARE-11's morning television show Showcase Minnesota. Each month or so I go on the air with Rob Hudson, one of the show's two hosts, and show the viewing audience one of the projects from my books. KARE-11 is the local NBC affiliate.

Today (July 14) I dug out my taser powered potato cannon and demonstrated that. It worked quite well considering we were operating it outside in a driving rain. But that's show biz. The people at KARE 11 are consummate professionals and working with Rob is a treat.

The episode can be downloaded here. Next month I demonstrate the water rocket from Backyard Ballistics.

Thursday, July 09, 2009

Interview Today on WHYY Philadelphia

Today, I'm being interviewed on WHYY- Philadelphia's NPR Affiliate:

Radio Times with Marty Moss-Coane is an intelligent talk show dealing with issues of the Delaware Valley, as well as issues of national and global concern. Radio Times is produced by WHYY in Philadelphia.

Hour 2 (11 AM Eastern Daylight Time)
This hour, learn how to make a flamethrower in your own garage with engineer and author WILLIAM GURSTELLE. Gurstelle gives instructions on this and other explosive projects for the do-it-yourselfer in his new book Absinthe & Flamethrowers: Projects and Ruminations on the Art of Living Dangerously.
Listen on line at:http://www.whyy.org/91FM/live.html

I was on NPR's Science Friday


The 4th of July is the time when people really start thinking about the things that go whoosh boom and splat, so Absinthe and Flamethrowers is getting a lot of media attention.

Yesterday, I appeared on National Public Radio's Science Friday show. The subject of the show was how to make those oh-so-interesting projects such as spud guns and smoke bombs.

Science Friday is a live show, but I was on a cruise ship in the middle of the Atlantic Ocean. Luckily there was a good satellite connection, so the call and the interview could happen.

You can here the interview at the NPR Science Friday website or by clicking here.

Wednesday, June 17, 2009

Jatropha Seeds - a promising biofuel?

I'm asking my brother Steve, the expert gardener to experiment with some jatropha seeds that I found on Amazon. They're pretty cheap - $4, which is a buck less than the seeds for the incredibly hot pepper called naga jolokia seeds I asked him grow. Amazon refers to jatropha as "diesel fuel plants." That's probably hyperbolic. But the stuff does have potential I think.

I became interested in jatropha because the Houston newspapers reported today that a Continental Airlines test flight earlier this year using biofuel intended to reduce greenhouse gas emissions achieved fuel efficiency slightly higher than traditional jet fuel. That's huge.

During the 90-minute flight Jan. 7, test pilots put a Boeing 737-800 through various maneuvers, powered by one CFM International CFM56TB engine using 100 percent traditional fuel and one using a 50-50 mix of traditional and biofuel. The flight did not carry passengers and the airline did not set a timetable for using the fuel on regular flights.

Fuel efficiency from the 50-50 mix was about 1.1 percent higher, the airline said.

The biofuel blend included components derived from algae and jatropha rather than food crops. Greenhouse gas emissions for production and consumption of the biofuel tested are estimated at 60 percent to 80 percent less than for traditional jet fuel

This is at least the second report of an airline using biofuels based from Jatropha, Air New Zealand just reported similar results with similar biofuels.

"A second generation biofuel, jatropha is grown on land that doesn't compete with food. It requires almost no care and very little water. Another major benefit of jatropha is that, due to its ability to take hold in harsh wastelands, it can be used to help stop erosion in these areas and reclaim them for agricultural production." -- Gas 2.0

So, this jatropha plant makes a lot of fuel, grows in wastelands, and needs no care or water. Hmm, is it time to buy stock in jatropha companies?

Saturday, June 13, 2009

New Absinthe and Flamethrower Website


Sales of Absinthe and Flamethrowers remain brisk. As of this writing, it's one of the 300 most popular books sold on Amazon. I'm humbled and grateful. Thanks to those who have read the book and shared their opinions.

I've redone the official A and F website. For updates, corrections, and general news regarding Absinthe and Flamethrowers: Projects and Ruminations on the Art of Living Dangerously, visit:
www.AbsintheAndFlamethrowers.com

To purchase a copy of your own, click here.

Friday, June 12, 2009

Here's Why Engineers Aren't Famous

Back in the 1970’s, there were not many famous scientists or engineers, and now, there are almost none. If you disagree, try and name one, right now. Go ahead, try it. Who did you come up with? Carl Sagan? No he’s dead. Try again. Stehpen Jay Gould, the Harvard guy who talks about dinosaurs? No, he’s dead too. Hawking? Sure, Stephen Hawking is alive, but he’s far more well known for overcoming his disabilities to do great scientific stuff, than for his scientific stuff itself (Can anybody really understand “A Brief History of Time?). Perhaps, on odd occasion a autograph seeker stalks MIT’s Old Main in hopes of obtaining Marvin Minsky’s or Noam Chomsky’s signature, but really, very few scientists need bodyguards to keep away the star struck rabble.

On the “Q-Scale” of modern fame where Albert Einstein stars with a 54 and George Takai rates a 1, no living scientist or engineer even shows makes a blip on the Sulu’s radar screen. It’s pitiful, but the truth is that no technology related individual, with the exception of Bill Gates, pulls a higher Q score higher than Count Chocula.

The point is there are many, many excellent engineers although the majority of whom are not well known outside of their own companies. In fact, the term "famous engineer" is an oxymoron on par with "nondairy creamer", "dry martini", or "jumbo shrimp". Unlike like say, journalists or lawyers, few people can name more than one or two famous engineers, real or fictional. A recent poll, (I asked my friends one night, while drinking) determined the most famous engineers in history were Thomas Edison (a good choice) followed by Scotty on Star Trek, and then a big gap to Q, the gadget guy in James Bond movies. Beyond that, it’s a lost cause.

Although many of the things that engineers, tinkerers, and radical, technological self expressives make are quite well known, the people behind the things rarely capture the limelight. Why are tinkerers, engineers and technological self expressives so hidden from fame?

Perhaps it is due to their slightly offbeat sensibilities compared to the population as a whole. Although it is not politically correct to assign traits to groups of people as a whole, I have found that more or less, engineering/tinkering life is based on a few basic principles, none of which are designed to attract attention, or at least favorable attention. Here they are:

1. Engineers as a group dig the original Star Trek (note the George Takai/ Mr. Sulu reference in a preceding paragraph.) It's a small wonder, since the only place on television with heroic engineers is the starship Enterprise. And even better, they occasionally get to have sex with aliens. This is much more glamorous than the real life of an engineer, which consists of living like salaried prairie dogs, in fabric covered cubicles, deep in suburban office plantations, dreaming of alien sex.

2. As noted above, GQ and Details Magazine spend little time courting the engineer reader. Trendy clothing is not a priority for an engineer. In fact, if the bridges of their eyeglasses stay taped together okay, and nothing embarrassing such as private parts or nipples are unwittingly exposed, then their sartorial objectives have been satisfied. Anything else is overkill.

3. When something funny happens, instead of manly, hearty laughs, people who tinker with machines tend to smirk. Actually, it’s worse than that, far worse - they giggle. This is very unfortunate for the whole group’s public relations effort and the less said about this, the better.

4. Extreme tinkerers, to a person, share a love for special purpose buildings and vehicles. Ask one what they’d like more than anything else in the world and nine out of ten will say “a 20’ x 30’ heated workshop out in the back with oversized doors and 200 amp, 480 volt electrical service.” Besides the workshop, all extreme tinkers covet a trailer large enough to transport their hobby all over the country. The trailer must come with a professional paint job on the side that reads “TEAM EXTREME” or something similar in red and black script.

5. Tech-geeks are a pretty frugal group. Now, do not misunderstand, no one is saying that radical technical self expressives are cheapskates. They're behavior is not attributable to a miserly disposition or to simple penny pinching avarice. It is really much more about looking at every spending situation as opportunity to substitute knowledge for cash, a tradeoff that most engineers would make in a heartbeat. Moreover, when the conditions are right (like when building something really, really cool), all thoughts of economy are vacated. A different engineering trait kicks in and the sky’s the limit. Which brings us to the last trait.

6. In their own weird way, they have very large egos. Two things are important to the people who tinker on large, involved projects: The first is how smart they feel they are, especially when comparing themselves to other people. The second thing is how many cool things they can make. Your pocket protected, handbook carrying, soldering-gun-at-the ready tinkerer cannot walk away from the challenge of making something really new and unique until it is met head on and conquered. If it's a really, really tough problem, it’s like watching the police dogs on "Cops" go after a shirtless car thief - they are just relentless. They clamp on to tough problems like grim death -- to them, it’s a titanic struggle between their will and the laws of physics. It's been said that radical tinkerers will go without food and hygiene for days when they’re working on a project. (At least that’s the excuse they use.)

And when they succeed in building something really, really cool, they will experience an ego rush that is better than sex - well, alien sex in a weightless environment notwithstanding.