Ah, the ubiquitous D engine. I used to clean out model rocket shops of those. So...

blantonl on Jan 8, 2013 | parent | context | favorite | on: Meet the Man Behind America’s Most Dangerous Mail-...

Ah, the ubiquitous D engine. I used to clean out model rocket shops of those. Some of the things we put together with the powder from those were... er, fun.