If the boundarie
s weren't worth pushing then we'd buy all our clocks at WalMart, and they'd keep virtually perfect time and run for years on a cheap battery.
I'll take a look at at the book. While dead tree reprints of the actual book are available they're pretty pricey - doesn't seem to be a mass market paperback
. Since it's out of copyright I found a legal download source (which even has kindle versions), a scanned copy from Boston College Library at:http://www.archive.org/details/modernclockstudy00good
I hadn't realized that epicycycl
oidic teeth would allow a bigger endmill - i'm limited to a 6" diameter with my mini-router. If the display screen is correct I can cut a 25DP 144T gear that's just a hair under 6 inches. I've got some baltic birch plywood already ordered, perhaps the ZB would cut a gear that won't strip the first time it was loaded.
Thanks a lot John! Liked the workshop in the backgroun