Nice Halloween stunt from maker Matt Coates, aka mattjackets. Illuminated from within by the classic traveling arc, Matt’s Jack-o’-lantern this year is carved with a high-voltage hazard symbol instead of a face. [via Hack a Day]
Mercury arc valve rectifiers are beautiful
Inspired to make something for Halloween? Be sure to enter it in our MAKE Halloween contest to win cool prizes. Costumes, decor, food, whatever you create for Halloween, is welcome in the contest.
Read our full contest page for all the details.