Before the year 2000 began, the folks at Counterbalance Bicycles were waiting to open their doors to the public, and Mr. Adam Smith painstakingly traced his well-worn 52-tooth front ring to circumscribe his shop's logo. Xerox-enlarged typewriter letters were carefully placed and glued around the edge, and a pan-balance and calipers were added.

ABCdzyne began work on the website's logo in quite the same order, first with measuring and "machining" shiny chrome pixels, then finding an old typewriter font, and finally choosing a nice brass for the instruments.

Enter Constructive Solid Geometry, better known as CSG. A bunch of boxes and cylinders, differences, unions, and intersections are all you'll need.

one big disk, a
very thin cylinder

fifty-two tooth holes,
and the center

most of a chainring

two sexy ovals
(scaled cylinders)

a tab (box) for the spider (above),
and some sexy curvy tabs (boxes
minus an oval to join to the ring)

to create most
of a hanger

now, take our hanger

and perfom an
intersection
(the areas
common to both
the shapes)

with a simple box

we're getting
somewhere!

and now take
our keyhole...

and poke some
appropriate holes

and there you
have it!

remember our chainring?

reproduce our hanger
fivefold...

Tada!

This is, however, kind of punishing to the renderer, taking a lot longer to draw. Oooh, that's shiny chrome.