Patrick, the RT indeed came from David Charlesworth. He developed this idea for plane blades. However, Chris Schwarz first applied this technique to...
You can put a rough but effective burr quickly on a card scraper with a file and sand out the resulting surface on cherry or maple with 150#. Stoning...
Lighter fluid kills insects, including ticks, instantly, as they breath thru their skin. Put a drop on one, wait a couple seconds, and then remove. ...