I recommend 'How It's Made'

cbc_s03_knowing_your_topic_and_specification

#1

I was having trouble picturing how wood was glued together for bowling pins and found myself thinking ‘I wonder if How It’s Made did an episode on this?’ one quick youtube search later and it turns out the answer is ‘yes they did.’ I found it interesting and it’s only five minutes long so even if it it isn’t strictly necessary to know this stuff it’s not a lot of time wasted. There’s one on bowling balls as well.


#2

Fascinating! Thanks so much for finding and then providing the links for us to see.