The first thing you'll need to do is design the rule. There are places on the internet that have templates for circular rules, but I wanted to design my own. It turned out that in the process, I learned a lot about how slide rules worked. Anyways, I wrote a C code to produce a .svg file of the front and back faces, along with the interior pieces that hold the rule together while letting it slide around. The code is below, and the result is in "slide_stator.svg". The cursor is in "cursor.svg". I designed these files so that the rule could be cut out of acrylic with a laser cutter. I don't have my own laser cutter, so I had the guys over at ponoko.com
do the cutting for me.
Anyways, some notes on the design:
On one side (let's call this "side 1"):
* A log scale (inner)
* A C/D scale (sliding)
* A sine scale, in radians (outer)
On the other side (side 2):
* A K scale (inner)
* An A/B scale (sliding)
* A cosine scale, in radians (outer)
UPDATE: At someone else's suggestion, I'm also attaching .pdf versions of the templates, so people can just use card stock. Note that when you look at the files, the lines are very very thin. This is because the Ponoko folks need to have the templates in a certain format.