It really does take a full day to strip, clean & reassemble a three train clock.
It took 1 hour to strip into component parts. It then took a couple of hours soaking in horolene. It then took 4 hours! to wash, rinse, dry, peg holes, reassemble, lubricate, check it all, plant the escapement and have it ticking.
Then there is an hour or two of keeping a beady eye on it, making sure it behaves properley.