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All those toys we love.

 

The Many Patents of Steve Jobs

Thursday, October 6th, 2011

New York Times has a fantastic, interactive tribute to the brilliance of Steve Jobs and the 317 Apple patents he’s listed as one of the inventors of.

As sad as his loss is, we must also rejoice in the great ways he’s improved our lives, and strive for the same level of excellence that he maintained.

Drilling Square Holes with a Reuleaux Triangle

Monday, October 3rd, 2011

Circular motion can be converted into a four-sided square using the Reuleaux triangle. The process relies on the property of Reuleaux triangle’s diameter being consistent across all points, and when rolled and rotated simultaneously, tracing a square area with slightly rounded corners. By slightly altering the shape of the triangle to mimic a drill bit (for cutting and extracting material), a drill with a specialized rotating chuck can create perfect, four-sided holes. These drills were pioneered by Harry Watts, and can still be found today, albeit not at your typical home improvement store.

The following is a bit of literature that helps explain and illustrate the concepts behind the Reuleaux triangle. Please check out more of Prof. Smith’s work here.

Drilling Square Holes
by Scott Smith
published in The Mathematics Teacher, October 1993 (Volume 86 Number 7)
A bit that drills square holes … it defies common sense. How can a revolving edge cut anything but a circular hole? Not only do such bits exist (as well as bits for pentagonal, hexagonal and octagonal holes), but they derive their shape from a simple geometric construction known as a Reuleaux triangle (after Franz Reuleaux, 1829-1905).

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Inch to Decimal to Millimeter Conversion Poster

Tuesday, September 20th, 2011

 

I need one of these posters for my shop. From what I hear you can get yours at McMaster or MSC, although I haven’t found a full size one yet. But I did stumble across this book, and it looks good: Home Machinists Handbook

Here’s an online conversion table that can help in a pinch, too.

Millimeters Fractions Inches
.397 1/64 .015625
.794 1/32 .03125
1.191 3/64 .046875
1.588 1/16 .0625
1.984 5/64 .078125
2.381 3/32 .09375
2.778 7/64 .109375
3.175 1/8 .125
3.572 9/64 .140625
3.969 5/32 .15625
4.366 11/64 .171875
4.762 3/16 .1875
5.159 13/64 .203125
5.556 7/32 .21875
5.953 15/64 .234375
6.350 1/4 .25
6.747 17/64 .265625
7.144 9/32 .28125
7.541 19/64 .296875
7.938 5/16 .3125
8.334 21/64 .328125
8.731 11/32 .34375
9.128 23/64 .359375
9.525 3/8 .375
9.922 25/64 .390625
10.319 13/32 .40625
10.716 27/64 .421875
11.112 7/16 .4375
11.509 29/64 .453125
11.906 15/32 .46875
12.303 31/64 .484375
12.700 1/2 .5
Millimeters Fractions Inches
13.097 33/64 .515625
13.494 17/32 .53125
13.891 35/64 .546875
14.288 9/16 .5625
14.684 37/64 .578125
15.081 19/32 .59375
15.478 39/64 .609375
15.875 5/8 .625
16.272 41/64 .640625
16.669 21/32 .65625
17.066 43/64 .671875
17.462 11/16 .6875
17.859 45/64 .703125
18.256 23/32 .71875
18.653 47/64 .734375
19.050 3/4 .75
19.447 49/64 .765625
19.844 25/32 .78125
20.241 51/64 .796875
20.638 13/16 .8125
21.034 53/64 .828125
21.431 27/32 .84375
21.828 55/64 .859375
22.225 7/8 .875
22.622 57/64 .890625
23.019 29/32 .90625
23.416 59/64 .921875
23.812 15/16 .9375
24.209 61/64 .953125
24.606 31/32 .96875
25.003 63/64 .984375
25.400 1 1.000

Rubberband Trick for Removing Stripped Screws

Friday, September 9th, 2011

This isn’t new, and I didn’t come up with it. And, some people say it doesn’t even work that well. But still, for a not-too-tight screw that you just can’t get some pliers around, give this a shot.

(via apartmenttherapy)

Another iPhone-as-Audio-Recorder Approach: Handheld Mic

Monday, August 1st, 2011

A couple months ago I posted about how to improve your video projects by using an iPhone to record improved audio. I described a system that mimics a lavalier (clip-on) mic, by putting the phone in your shirt pocket, or even on the desk next to you.

Jeremiah Warren (the guy who strapped a camera to some fireworks) took the same concept and expanded it a step further — using the iPhone as a handheld microphone in his latest video (about cooking food on the hot dashboard of your car). The interesting thing about this approach is that it creates the concept of a handheld microphone with a built-in-audio recorder, rather than the system where the mic wirelessly connects to a separate recorder. This creates the option of having as many channels of audio as you have microphones (I’m envisioning a full concert with all the instruments and individual drums recorded on a multitude of iPhones). Of course, the iPhone doesn’t have the ergonomics a handheld mic does, nor does it have the same microphone patterns that the variety of mics used for various instruments, sound levels, and recording environments require, but still something I might have to play with…

And get a kick out of the windscreen!

How Wavegarden Works – My article in Wired Magazine

Friday, July 29th, 2011

In February 2011, a group of Spanish engineers debuted a project they had been working on for over six years called Wavegarden — a wave pool concept that uses an active system for creating waves that have the shape and power that surfers normally travel thousands of miles to ride. The initial prototype showed videos of guys ripping on knee-to-waist-high, barreling waves and caused quite a murmur in the surf community: “How does it work? Where is it located? When will one be built near me?” Those questions unanswered, the Wavegarden team shortly afterward announced that they were busy at work on an oversized new prototype that would deliver shoulder-high waves–the height where surfing gets truly competitive.

I reached out to the Wavegarden folks that put this system together, and wrote a piece for Wired magazine about what it is and how it works. Check it out in the August 2011 issue (on newsstands right now), or read the online version (complete with video). And keep your eyes open for their new pool, which is forecasted to be finished around September.

 

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You need to be between 5’2″ and 6’3″ to get a job as an astronaut, and other interesting NASA hiring requirements and notes

Tuesday, July 26th, 2011

The 2004 NASA astronaut selection. Seated, from left: Bobby Satcher, Chris Cassidy, Ricky Arnold and Shane Kimbrough. Standing, from left: Jose Hernandez, Tom Marshburn, Joe Acaba, Dottie Metcalf-Lindenburger, Jim Dutton and Shannon Walker. Not shown: Randy Bresnik.

I was just checking out the NASA brochure for astronaut jobs and hiring information (last updated March 2008). Although the information has to be made available, I didn’t realize they marketed it so publicly — I like to imagine most astronauts as Steve Rogers-style, genetically modified super-scientist outer space aviators. The type that are made, not born, with the sole intention of implementing extra-terrestrial projects of the highest level of classification.

All joking aside, there are some very interesting points in the job post.

  • Prospective astronauts must be between 62″ and 75″ which is the height requirement of the Soyuz spacecraft that will be ferrying astronauts to and from the ISS for the foreseeable future
  • “The National Aeronautics and Space Administration accepts applications for the position of Astronaut Candidate on an as needed basis” (added emphasis is mine). I love this line — “Hey Tommy, we need more astronauts, dammit!”
  • Posts to the ISS can last from 3 to 6 months long. Like a semester at sea, or the ultimate study abroad experience.
  • A science degree in specific areas (engineering, biological science, physical science, or mathematics) and just three years of relevant experience are needed to qualify. And a Ph.D counts as three years.
  • Teaching experience is favorable!
  • A number of technical degrees do NOT qualify – including archaeology (although I can immediately think of a movie plot where NASA has to retract this requirement upon discovery of alien artifacts that appear …familiar).
  • Salary: for civilian astronauts, the pay follows the General Scale, grades 11-14, which based on the 2010 chart, means they are generally paid somewhere between $50,287 and $110,104 per year.
  • “When completed, the ISS will be 356 feet across and 290 feet long, and it will weigh about 940,000 pounds” — for comparison’s sake, a Nimitz class aircraft carrier is 1092 feet long by 252 feet wide, and weighs 97,000 TONS. That’s less than a half of one percent of the weight. Which is smart, since it’s expensive to carry heavy cargo into orbit.

And some detailed bios and interviews with the eleven astronauts from the 2004 selection (pictured above).

Joe Acaba, MS-E Science/math teacher Bio Interview
Ricky Arnold, MS-E Science/math teacher Bio Interview
Randy Bresnik, pilot Marine Corps major Bio Interview not available
Chris Cassidy, MS Navy lieutenant commander Bio Interview
Jim Dutton, pilot Air Force major Bio Interview
Jose Hernandez, MS NASA/Johnson Space Center engineer Bio Interview
Shane Kimbrough, MS Army major Bio Interview
Tom Marshburn, MS NASA/Johnson Space Center flight surgeon Bio Interview
Dottie Metcalf-Lindenburger, MS-E Science teacher Bio Interview
Bobby Satcher, MS Orthopedic surgeon Bio Interview
Shannon Walker, MS NASA/Johnson Space Center engineer Bio Interview

Cut-and-Fold Paper VW Touareg and Other Papercraft Rally Cars

Monday, July 25th, 2011

Rally racing, awesome as it is, tends to be a European phenomenon. Hilly, public tracks, often off-road. Rallies have been around since the advent of the automobile (mimicking horse-and-buggy races), and nowadays are high-speed, handbrake-turning, hump-jumping affairs. Outside of the European races, a few prominent rallies exist, with the Baja 1000 and the Paris-Dakar being two of the largest.

With that history behind us, here’s a fun way to show of how cultured and European you are: papercraft rally cars you can print and make to adorn your work desk. I’m fond of Volkswagen Touaregs, but the Mitsubishi Lacer with those all-terrain tires looks pretty aggressive too.

I found these and many more on the Czech site car-models.webnode.cz, via one of my fave sites, Paperkraft.net. You’ll need .rar software to unzip the files. If you make any of them, send me pics and I’ll post with your info for all the world to see.

VW RACE TOUAREG 2

VW Race Touareg 2
VW Race Touareg 2 Central Europe Rally 2008 Driver : Sousa Co-driver : Schulz VW_Touareg_08_PDF.rar (1,3 MB) vw lagos08_LOCK.rar (2,1 MB)

ŠKODA FABIA S2000

Škoda Fabia S2000
Škoda Fabia S2000 Rally Monte Carlo 2009 Driver: J. Kopecký Codriver: P. Starý fabiaS2000_09.pdo (5,3 MB) Fabia S2000.pdf (1,4 MB)

VW RACE TOUAREG 2

VW Race Touareg 2
VW Race Touareg 2 Rally Lisboa Dakar 2006 Driver : Kleinschmidt Co-driver : Pons VW Touareg 06_PDF.rar (1,4 MB) VWTouareg06_LOCK.rar (1,6 MB)

MITSUBISHI PAJERO MPR12

Mitsubishi Pajero MPR12
Mitsubishi Pajero MPR12  Rally Lisboa – Dakar 2006  Driver : Peterhansel  Co-driver : Cottret MITSUBISHI MPR12_PDF.rar (1,4 MB) PajeroMPR12_LOCK.rar (1,3 MB)

MITSUBISHI RACING LANCER MRX09

Mitsubishi Racing Lancer MRX09
Mitsubishi Racing Lancer MRX09 Rally Argentina – Chile Dakar 2009 Driver : Roma Co-driver : Cruz Mitsu_Lancer_lock.rar (1,8 MB) Mitsu_Lancer_MRX09.rar (1,6 MB)

How to Make a Balsa Wood Canon DSLR Mockup

Saturday, July 16th, 2011

 

(Note–if you like this post and other cool DIY projects, make sure to add me on twitter and grab the DOIT feed)

In 2003, Canon posted a how-to on their website about making a Canon 1D mockup in balsa wood. The post sat on their site without much attention for five years, until October 2008, when it got “viral” and spread around the web on all the major sites.

About nine months later, for as-of-now unknown reasons, Canon’s writeup was removed from their site, including most of the associated image files. But thanks to the Wayback Machine, much of that original post is still salvageable. I’ve transposed as much of the information here to help keep it available.

You’ll have to fill in the blanks on the missing images for each of the steps (there were a lot of pics) but you can get a good idea from the ones that are still around.

 

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Weekend Garage Sale Purchase: Bolts, Nuts, and Hydraulic Pipe Fittings

Monday, July 11th, 2011

A bounty of metal fasteners.

Saturday mornings, I love to peek at the local garage sale listings on Craigslist, usually to see what people are unloading in the way of tools. This weekend, I saw a “handyman special” nearby, and strolled over to it with an early morning coffee. As usual, the bigger goodies were all sold immediately, but I spotted a few bags of fasteners that seemed to have potential for yet-to-be-determined project work. Bolts, nuts, washers, a couple tie-rod ends, and a box of hydraulic pipe fittings. Not bad for a couple bucks — probably could find it cheaper (like, free), but if I’m going to make an impulse purchase, it’s nice to keep it in the five dollars or less category.

Anyone else find any treasures this weekend?