Category Archives: CNC - Page 16

Ultimate LED Nerd Glasses: Part 3 – Mechanical and PCB Construction

Wnerd glasses with LEDs on it with no tapehen building something like this, the first question I ask myself is “how can I avoid making the wires into a rat’s nest?”  OK, maybe that’s not true if you look back at such projects as the Pegleg Hexapod or Boxie the Creepster.  However, this was a wearable hack and has a very limited space to work with, so wires going everywhere on one’s forehead wasn’t really what I had in mind.

Instead of wires running everywhere, I decided to make my own CNC-routed PCB.  What it amounts to is three separate lines of copper cut to approximately fit the bridge section of the glases in question.  I measured everything and used Draftsight (see my Windows DS review) to draw the approximate shape with lines separating it into three isolated sections.  The middle will act as ground and the top and bottom section act as the positive for each set of LEDs.  It turned out better than I expected, and is mostly covered by the glasses.

From Amazon: Nerd Glasses Buddy Wayfarer Black Frame Clear Lens

I have no idea what brand or make the glasses that I used were, but I’ve listed a link above to some that are similarly styled from Amazon.  I’ve also listed Read more »

CNC Router Cut CD Ninja Stars (Including GCode and CAD files)!

cd ninja star and "shuriken"Behold, the CNC cut CD ninja star!  At one point I believed I had invented the CD ninja star, but a quick search of Google proved me very wrong.  As far as I can tell though, this is the first one that is cut with a CNC router, so maybe that’s something.

The picture to the right is, unfortunately, a result of placement, not the actual star sticking in the dartboard after a throw.  Not that this wasn’t attempted.  The shuriken in the upper left was a result of one of the points breaking off.

Not the sturdiest weapon in the world.  After cutting off another point to make it symmetric, it’s flight is still impressive if incredibly random.  I tested it out in the house (not recommended) where it arced around a wall nearly poking my wife in the eye.

Cutting was done with an engraving bit from ZTW at a depth of cut of .010″ per pass.  I didn’t offset anything, but just drew it and cut as an engraving.  The CD was fixtured the same way as the last HDD clock that I did, but one difference was that the zero of the X and Y axes were on the edges (shown by the green and red lines in the CAMBam picture after the break), not the center.  This allowed me to line everything up based on an edge instead of estimating the center of it.

It seems that things cut much better if Read more »

Making an AT-ST Stencil with a CNC machine

First of all I have no association with Lucasfilm or Star Wars.  This painting would, I believe, constitute fair use since it is somewhat of a parody and shouldn’t affect the market for the copyrighted work.  The video below shows the machining of an AT-ST acrylic stencil and the resulting spray painted canvas.

The path for this AT-ST walker stencil was generated using Inkscape using a process (explained here) similar to how I have generated logos for several hard drive platter clocks.  While for the logos outlines were engraved, for the AT-ST outlines were treated as the point where black ended and white began.  In other words, the outlines would still be “engraved”, but this was done deep enough to cut out the stencil.

Somewhat as a side effect Read more »