background preloader

Bill Hammack's Video & Audio on Engineering

Bill Hammack's Video & Audio on Engineering
Related:  Wood Working

Table Saw Fence Buying Guide: Biesemeyer vs. Unifence vs. Vega vs. Incra | A good fence can turn a poor-performing bench top table saw into a champ. It can’t increase power of course, but it can put more square into your work and improve your cut repeatability. A good fence on a good table saw is an absolute necessity. There’s not much out there I could find on how to select a table saw fence… and for some reason I couldn’t find many fence comparisons in online woodworking magazines. I turned, as always, to woodworking forums. You can’t really get more subjective or opinionated information than woodworkers in forums, but then again, how objective are woodworking magazine comparisons? In this post I first identify what to look for in a table saw fence. To share your opinions or other resources please leave comments below or write GFrench@ToolCrib.com. “I put a Vega on my old Craftsman; turned a P.O.S. into a pretty decent saw.” A great fence can’t add horsepower to a saw, but it can make your cuts straighter, more accurate and more repeatable. 6) Does it flex?

Note About This Icon Bioluminescent art: Beautiful bacteria glow in the dark What do you get when you add a chemical engineer, a graphic designer and a research scientist? Beautiful art. In a wondrous combination of nature and design, bioluminescent art involves using naturally glowing bacteria to create intricate and deliberate formations only visible when the lights are out. These three came together to create "BIOGLYPHS," a collaborative gallery at Montana State University-Bozeman. Photo: Rob Wilke/2002, MSU-Bozeman Bioglyphs Project Betsey Pitts, a director of the project and research scientist at the Center for Biofilm Engineering, said the BIOGLYPHS project involved "some microbiology training, imagination, and a lot of petri dishes." This kind of art doesn't use paint or paper. "This was all done in an afternoon, and the organisms were grown up and glowing in the dark by the next morning, when the show opened," said Pitts. Video: "Her Own DNA: Living Drawings Created with Bioluminescent Bacteria with Protein Music," Hunter Cole. Related posts on MNN:

Accidental Emacs Nice to see Emacs getting a bit of press recently. I’ve used it for almost 20 years now and it dominates my time at the keyboard. It isn’t perfect and I’m reluctant to recommend it but I wouldn’t want to be without it. Let me explain. The best thing about Emacs is that it can do everything (including the things it can’t do yet). The rest of this article describes a few of these happy accidents: modes I never knew about and tricks I wish I’d learned earlier. Emacs the Operating System Whenever I see the Emacs splash screen (click on the graphic for a close-up) I’m amazed anyone ever gets past it. You can do basic editing with the menu bar and scroll bar using the mouse. Unhappily the rest of the screen discredits this friendly proposition. Best of all, though, is the opening proposition: GNU Emacs is one component of the GNU operating system which I read as a straight-faced rebuttal of the old gag: OS integration examples META-! Window Management Well, I reckon Emacs has this problem cracked.

Cut List Problem Description A "Cut List" shows woodworkers how to cut a set of parts from a set of available stock. This program creates a diagram showing the stock pieces and how the required parts may be cut from them. Data may created, deleted, modified and saved to a file for later use. Users can specify the width of material lost during cutting (saw blade kerf width), and the minimum dimension of waste material to report. Solution searches give priority to crosscuts (vertical on the screen) or rip-cuts (horizontal) first or will try a Combination approach using all possible mixes of both types of cuts. Background & Techniques This program was originally written 10 years ago, in 1993, to solve a particular woodworking problem. I decided to update and publish the program for others to play with. "Width" of boards is represented vertically on the screen. Non-programmers are welcome to read on, but may want to jump to bottom of this page to download the executable program now. Programmer's Notes:

Science Toys | Scitoys Copernicus -vs- The Science Of THOR! I never would have guessed there would be so much science (and astronomy in particular) in THOR. And I was further astonished to find out that I know two of the science advisers on the film. Not only, that, but they had a great experience and were actually listened to and helped improve the film. As a comic book, Thor exists in the realm of imagination and legend. But a direct translation of the full operatic, color-saturated glory of the comic page to film often goes off the rails, because while in comics the reader is helping with his or her imagination, movies are a medium much closer to the real world. Realizing this, Marvel and president of film production Kevin Feige, have eased audiences into their universe one “buy-in” at a time. In preparation for this article, I talked to the two of them I already knew: Sean Carroll and Jim Hartle. One of the decisions I like best in THOR was to set the nine realms in something approximating the real world. But are all the realms planets?

IVI Blue Collar Woodworking with Stumpy Nubs: Who's Stumpy Nubs? Who's Stumpy Nubs? Stumpy is a semi-professional woodworker and workshop aficionado. The only thing he enjoys more than creating things out of wood is making improvements to the shop. Stumpy started out with a hand saw and a few drywall screws. What's the show all about? Blue Collar Woodworking with Stumpy Nubs is not about making projects as much as it is about making a workshop. It's also about entertainment.Woodworking is supposed to be fun. Apocalyptic Math, Engineering and Ethics – SMARTspace@NIU Apocalyptic Math, Engineering and Ethics Home Grade Level High School Apocalyptic Math, Engineering and Ethics Apocalyptic Math, Engineering and Ethics | Posted by Caitlin Roufa | High School, Math, Middle School | 0 comments | Come on an apocalyptic journey as we explore engineering, ethics, and math. Educators Shelter Engineering Challenge Grade Levels: 3-8 In this lesson students will use the Engineering Design Process to construct a model shelter that could be used for protection from the falling ash that results after a volcanic eruption. Download Lesson PDF Ethics Challenge: Friend, Foe, or Feast Grade Levels: 6-12 In this lesson, students will participate in a writing activity and in-depth discussion about whether it is possible to hold on to one’s humanity during a catastrophic disaster. Download Lesson PDF Student Challenge We would love to see your work! Surviving Ashfall with Math Geologist Jim Walker Spouts Off About Volcanoes: Part 1 Mike Mullin at NIU: Volcanoes! 0 Comments Share Meta

Backyard Brains Book Reviews Story | The Trousers of Reality Rather than expound upon the virtues of Yet Another Methodology or a Prescribed Practice, the author sets out to show that the wisdom and experiences of the last few millennia have lead to principles and practices that transcend particular methodologies or approaches and form the basis of success; that introspection and empathy will serve better than adherence to position and retreat behind logical argument; and that, ultimately, we all want similar outcomes — even if it's not obvious on the face of it. If you have ever been torn between deadlines and burnout, stretched between politics and technology, or simply wondered "How am I going to get through this?" I think that this book definitely has something to offer you. Firstly: a disclaimer. I worked with Barry Evans for approximately nine months about fifteen years ago in London. When he announced that he was taking time out to commit his experiences to paper, I admit I was keen read his book.

Related: