Originally Posted by
wgscott
Sorry about the wound. I hope it heals rapidly and fully.
Wrap the chain around the (big) ring.
The chain was already off the bike. I was doing a complete drivetrain overhaul – repacked the wheel bearings, overhauled the rear derailleur, new cassette, chain, chainwheels. The fixing bolt on the crank arm was a little stubborn, and when I put a little more oomph into the wrench, it let go and my hand went into the chainring. That was incredibly stupid. I knew better than to loosen it the way I did, but I was getting impatient; wanted to finish the job so I could ride the bike.