My Grandfather liked to tinker around with projects, and his shop was a marvel to a young mind. He was always tinkering with something and while he didn't always figure it out, he was successful more often than not. (The engine that ran on tap water gave him fits, and while he got it to run, it had no power, it wouldn't pull itself.) But that's another story.
So, I love to watch guys who tinker in their shops, and while surfing around, I found this guy, Gerry, who YouTubes his projects, love2diy.com. He's been working on heaters that run on waste motor oil, and it's fun watching his projects come together.
Here's the finished project.
I especially like the Pyrex bowl he uses for a viewing window.
I was showing this series of videos to my son last night, during a lull in the Christmas festivities, and he asked me to capture it, because he's just finished his shop and is looking at heating options.
Stuff like this fascinates me.