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Comment: Re:Incredibally useful (Score 2) 32

by WillAdams (#47575413) Attached to: NASA's JPL Develops Multi-Metal 3D Printing Process

Classic old saw is that the only tool in a workshop which can duplicate itself is a lathe --- hence the Gingery books starting w/ making a lathe using investment castings:

http://gingerybookstore.com/Me...

(Book 1 is how to set up a charcoal foundry)

Had a copy of Book 2 a long while ago and gave it away --- always rather regretted that.

Comment: Re:Only a part of production (Score 1) 43

by WillAdams (#47568595) Attached to: A Look At the Firepick Delta Circuit Board Assembler (Video)

The Shapeoko 2 works well for milling circuit boards (esp. if one upgrades the spindle): http://www.shapeoko.com/wiki/i...

Precisely adding solder paste should just be a variation on an extruder: http://www.shapeoko.com/wiki/i...

and here's one example of using the machine for pick and place: http://www.shapeoko.com/forum/... (using an aquarium pump for vacuum).

Comment: Re:Mostly contribute on the Shapeoko site (Score 1) 39

by WillAdams (#47550559) Attached to: Build Your Own Gatling Rubber Band Machine Gun

The clear one was just scraps and poplar craft boards --- I'd love to do it again w/ a nice piece of maple and wrap the grain all the way around, but the red oak was much cheaper, but I found the grain boring enough that I went for the dark, dark finish (which is more delicate than I was anticipating...).

Here's the project page on Lumberjocks: http://lumberjocks.com/project...

Comment: Mostly contribute on the Shapeoko site (Score 2) 39

by WillAdams (#47549677) Attached to: Build Your Own Gatling Rubber Band Machine Gun

So the wiki and pages such as: http://www.shapeoko.com/wiki/i...

Have made a few things:

  - Wooden Box with hinged lid --- http://www.shapeoko.com/projec... --- cut w/ a CNC machine
  - wooden case for my Bear Custom Kodiak T/D --- http://www.pinterest.com/pin/3... --- done entirely by hand tools, including the dovetails save for drilling the holes for the arrow holder (used a jig and an electric hand drill for that) --- this build was documented on ArcheryTalk though: http://www.archerytalk.com/vb/...

Comment: Re:What's the point? (Score 1) 129

However, one doesn't read highway signs at arm's distance.

Also, lower resolution reduces the amount of information which one can fit on a given highway sign and diminishes legibility by obscuring finer details.

The human can distinguish the difference in character shapes at resolutions up to ~2,000 dpi --- see Smeijer's book _Counterpunch_ for an examination of this.

Current smart phones aren't quite able to adequately represent typeface designs w/ subtle curves such as Optima at text sizes, and engravings become a pixellated blurry mess compared to the sharp originals, some of which require extraordinary printing techniques such as two black plates to capture.

Comment: A.I. is still hard, Self-Awareness not on map (Score 2) 564

Given that China's recent supercomputer can't find enough work at the rates they have to charge to cover their electric bill, it seems to me that any such problem would be as simple as pulling the plug and waiting for the batteries to die down.

I'm also mystified as to how one gets a deterministic device to have volition and self-awareness --- Heinlein could handwave this by declaring that after a certain number of transistors a device ``woke up'' and became aware (The Moon is a Harsh Mistress), Marvin Minsky sidestepped it neatly (The Turing Option), and Victor Milán had to posit algorithms which produced random results and bolt on a radioactive cannister whose decay was used as a source of random input (The Cybernetic Samurai).

The best laid plans of mice and men are held up in the legal department.

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