Category Archives: CNC - Page 16

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 »

Some other Computer Parts I tried to Engrave

cd tiger paw engravingAfter engraving several hard drive platters, it seemed like I needed a new challenge.  This, or possibly I saw someone engrave a CD on the Zen Toolworks Forum and thought that I should do this too.  All I really was copy the Gcode from the “Tiger Paw” engraving and ran it with a CD instead.  This worked fine, but I should have really stretched the numbers/paw out if I was going to actually make a clock out of it.

I think the HDD clock is a little better looking, but considering the effort to “harvest” then engrave them, a “CD clock” might be a good alternative.  CDs might also make a cost-effective material for little cutout figures if no acrylic or other material is around.  I have an idea for one item that I’ll publish later this week…

The second thing that I thought would be fun to engrave was a stick of DDR RAM.  After taking apart my former HTPC computer Read more »