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Sam Jacoby
Sam Jacoby committed Dec 8, 2012
1 parent 186eff4 commit 5b07160844a8ef00822de931cbf51b0fa8840158
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@@ -2,6 +2,7 @@
title: Gerber File Extensions
summary: Making sense--mostly--of the alphabet soup of circuit board layout files.
date: 2012-08-24 22:42:58
+keywords: gerber, eagle, file formats
---
Lest anyone be misled, **this is a post about making circuit boards.** Thrilling stuff.
@@ -3,23 +3,25 @@
summary: High-Low Tech goes on a field trip. Hi-jinks ensue.
date: 2012-12-04 17:05:59
keywords: high-low tech, mit, glass lab, cane, virtual glass
+thumbnail: glass-1.jpg
---
A venture-some crew headed off the [MIT Glass Lab](http://web.mit.edu/glasslab/) last week. In the basement, off've of the Infinite--or more accurately, directly below the Infinite, the Glass Lab is an odd corner of things. I'd assumed that it was a hold-over from the days when chemistry departments blew their own glass and the like, but it's apparently not. I forget the details, but it's folded into the materials science department, I believe. There is a much coveted lottery every semester, where a lucky dozen or-so get a chance to learn the craft. I've missed every opportunity, unfortunately.
-{{ macros.render_figure('<a href="http://www.flickr.com/photos/samjacoby/8252050895/" title="High-Low Tech visits the MIT Glass Lab by s_jacoby, on Flickr"><img src="http://farm9.staticflickr.com/8488/8252050895_964870d1d5.jpg" width="375" height="500" alt="High-Low Tech visits the MIT Glass Lab"></a>', "Fearsome flame fires.") }}
{{ macros.render_figure('<a href="http://www.flickr.com/photos/samjacoby/8252047247/" title="High-Low Tech visits the MIT Glass Lab by s_jacoby, on Flickr"><img src="http://farm9.staticflickr.com/8063/8252047247_dbf63a22e6.jpg" width="500" height="375" alt="High-Low Tech visits the MIT Glass Lab"></a>', "The gang, skeptical.") }}
Anyhow, [Peter Houk](http://web.mit.edu/glasslab/peeps_pbhouk.html) presented some of his work to [High-Low Tech](http://hlt.media.mit.edu) a couple of months ago--and then invited us back over to his place to experiment with some new software that [Erik Demaine](http://virtualglass.org/team.html), among others, have been working on. It's called [Virtual Glass](http://virtualglass.org), essentially a CAD tool that lets you experiment with different configurations of _cane_ (colored glass rods) and see how the cane will appear once pulled. I don't know if "pulled" is the technical term, but that's what it seemed like to me. Making glass has a lot in common with pulling taffy and baking--at least in these early stages.
-{{ macros.render_figure('<a href="http://www.flickr.com/photos/samjacoby/8252050527/" title="High-Low Tech visits the MIT Glass Lab by s_jacoby, on Flickr"><img src="http://farm9.staticflickr.com/8067/8252050527_b8093028b8.jpg" width="500" height="375" alt="High-Low Tech visits the MIT Glass Lab"></a>', "White and red cane, being pre-heated on a blow torch") }}
+{{ macros.render_figure('<a href="http://www.flickr.com/photos/samjacoby/8252050527/" title="High-Low Tech visits the MIT Glass Lab by s_jacoby, on Flickr"><img src="http://farm9.staticflickr.com/8067/8252050527_b8093028b8.jpg" width="500" height="375" alt="High-Low Tech visits the MIT Glass Lab"></a>', "White and red cane--probably six-or-eight inches long--awaiting a pick-up on a glass plug.") }}
Erik gave us a quick demo--though the software is fairly self-explanatory, especially after you've seen the cane made--and we came up with a number of designs of varying degrees of practicality. The point, really, was to push the designs as far as we could go--and see what kind of things Peter, Marty, & Erik could put together. This is what I came up with:
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The main tool that you have is the distance of each color from the center. When a piece of hot glass is pulled out and spun--I'm sure this process has a lovely Italian name that I don't know--the colors rotate around the axis in concordance to how far they are from the center. Colors near the center of the cane show hardly any rotation at all--a vague waver, maybe. Those towards the edge wrap around dramatically. In using a spiral design, the distance of the various canes from the center of the larger cane varied in a way that seemed pretty cool.
+{{ macros.render_figure('<a href="http://www.flickr.com/photos/samjacoby/8252050895/" title="High-Low Tech visits the MIT Glass Lab by s_jacoby, on Flickr"><img src="http://farm9.staticflickr.com/8488/8252050895_964870d1d5.jpg" width="375" height="500" alt="High-Low Tech visits the MIT Glass Lab"></a>', "Fearsome flame fires.") }}
+
At any rate, the Team Glass Lab decided to made it happen. There was only about a half-hour, but somehow, they made it happen. It was quite a show. In corner one, we've got dual furnaces, each heating a white-hot pool of glass. In the corner, a glory-hole -- an insanely-hot furnace in which dabs of glass are reheated and heated when on the end of an uh...punty? I may have made that up--a long metal rod, at any rate. A blowtorch is off in the corner, braying its firey mess. (For some additional anthropological thoughts on the subject, please see: _[Conner, Erin, Embodied Knowledge in Glassblowing: the experience of meaning and the struggle towards proficiency](http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CDgQFjAA&url=http%3A%2F%2Fwww.scasss.uu.se%2FIIS2005%2Ftotal_webb%2Ftot_html%2Fpapers%2Fembodied_knowledge.pdf&ei=mR7CUPSeOLGG0QHL0IHICA&usg=AFQjCNEurTuRIijIgxjSkvYBr88V9uoA7g&sig2=OtTGICr3kqIYG77wUhMrdQ)_. I read this paper for a class on qualitative ethnography last year. Smutty stuff.)
{{ macros.render_figure('<a href="http://www.flickr.com/photos/samjacoby/8253115392/" title="High-Low Tech visits the MIT Glass Lab by s_jacoby, on Flickr"><img src="http://farm9.staticflickr.com/8208/8253115392_20b5c1662a.jpg" width="500" height="375" alt="High-Low Tech visits the MIT Glass Lab"></a>', 'Something critical taking place.')}}

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