A few weeks ago,  an Adelaide Community Bicycle Workshop volunteer, ran a session on chains and gears. Participants  learned to use chain breaker tools. The workshop has 2 or 3 ; they were all in use; Don lent his personal multi-tool - to one of the visitors. After the workshop, Don realised, the person he’d lent it to, had not returned it. Don waited for a call or email  - nothing Don mentioned …