On: Beginning Woodworking

[k_sze]

He's also the author of the gear template generator program, which is, in itself, quite cool: http://woodgears.ca/gear/index.html

I discovered it when I watched the video about the making of the Wintergatan marble machine.

[zokier → k_sze]

In addition to being cool tool in itself, the evaluation copy wobbly mode made a fun little reverse engineering challenge :)

Of course I advise you to buy it if you use it for more than RE exercise.