Today was going to be an easy day: two bikes were nearly finished and needed a quick test ride before being put on display, and in one case calling a customer who had been interested a ladies trekking bike.
On arrival I found a bike returned by a customer. The note attached said because "The tyre is flat and the chain is broken, Is it the correct chain? Please repair URGENTLY." Apparently they expect it for free: they're going to be disappointed.
The first test ride went fine until the chain went over the low gear and dropped between cogs and chain, broke several spokes and damaged several more so the wheel was pretzeled. Dragged bike back into workshop and tried to save the wheel but it wasn't playing.
I'm known in the workshop for my dislike of "pie plates" and for removing them under any excuse. I may have to rethink that one.
I find another wheel, but the freehub was damaged. Lightbulb moment, swap freehubs. Remove freehub 1, and throw it away.
Client needs help with the bike he's working on as a 'first project'; the chain won't fit on the chainwheel. Turns out that when he dismantled and rebuilt the cianwheel he put two components in reverse order so there are no spacers between the gears. Easily done and easily solved.
Remove axle from damaged wheel and stick Really Big Key into hole. Hurrah, it was the same fitting.
Client needs more help; actually, no he doesn't; a couple of questions and he works out how to refit the chainwheel without me.
Swap hubs.
Phone rings; I need to go to the till.
By the time I get back it's too late to finish the wheel so that will have to wait until tomorrow...
I just hope I remember which wheel/hub is which...