The Craftsmanship Museum in Carlsbad occupies a 16,000-square-foot facility on Lionshead Avenue near Palomar Airport Road, operated as a 501(c)(3) by the Joe Martin Foundation since 1997. The collection houses more than 250 working miniature internal combustion engines and over 150 steam and Stirling engines, a depth of precision craftsmanship paralleled in North County only by the instrument collection at the Museum of Making Music on Armada Drive. Individual artisans rather than factories produce every displayed model, from quarter-scale Wright Flyer replicas to functioning locomotive engines machined to thousandths-of-an-inch tolerances. The building opened at its current site in 2011 after outgrowing the original Vista location, and the on-site machine shop draws hobbyist machinists from the same Bressi Ranch corridor anchored by Campfire on Armada Drive. Live demonstrations feature Sherline bench-top mills and lathes cutting miniature components to tolerances below 0.001 inches on substrates ranging from brass rod stock to hardened tool steel.