I built a natural draft furnace to test ideas about how hot a furnace could get without the use of bellows. Natural draft is the flow of air through a furnace due to rising hot air. The hot gasses in the... continue reading

posted by Mordhaus 7 years 4 months 2 weeks ago • 454 views • 5:46

Since it is Labor Day in a good part of the world, here is a video about the incidents at Haymarket Square following the call for workers to strike on May 1st. It picks up on May 3rd. The events would... continue reading

posted by RFlagg 1 decade 3 years 10 months 2 weeks ago • 1,238 views • 5:15