That was a good one Theo.
I was curious how he determined the radius using a divider so I asked my son. Here's his response.Man, that guy made it look so easy! I was also interested in how the compass helped him get the inside radius set right. It looked super simple but yet, most confusing. And thanks to this video, I ended up using time to watch a guy make a homemade piece for his car out of an aluminum casting and then boring, milling and such. Was interesting but I can't do it...and now I can't turn back the clock...hmmm....lol