This replaces the item that was flagged up, and then deleted, last week. My apologies for wasting everyone's time, if they opened the link and found a skeleton instead. It took me the whole week to figure out where I'd gone wrong: but at least, I got there in the end.
http://coldhamcuddliescalling.blogspot.co.uk/2015/05/trade-secrets-of-puppeteer-as-revealed.html