Jeffers' Block

The first time I saw this spacer block, Dave Jeffers had just finished making it - it took him only about 15 minutes on a Bridgeport. Good luck printing it faster than a master machinist can cut it! My guess is you won't even come close.

EDIT: I was smart enough to take pictures of this, and I found them, dated May 23rd 2007. I'll update the model to more accurately resemble the block pictured when I get a chance.