"Michael Black" wrote in message
news:alpine.LNX.2.02.1503121632160.11574@darkstar. example.org...
Make sure to properly file the details of the gears.
3D printing can be useful for "keeping parts in stock", but if you lose
the information about what you did the first time, it won't be so easy
to resurrect it down the road.

Likewise all homebrew projects, put the fag-packet design details
in the back of the aluminium case!