this long but worthwhile video documents ford hallam's meticulous reconstruction of the lost half of a pair of tsuba by hagiya katsuhira. nearly every stage is embedded in the workmanship of risk: the further along, the more stands to be lost by the commission of even a small error in work.
slow is always better ... you have to feel what's going on. this is why i reject power tools. they're simply far too fast. you can't feel the irregularities. the tool simply takes over.
[found thanks to joakim]