A line of skateboarders from their pre-teens to their 30s queued up this past Saturday, waiting up to an hour for “Professor” Paul Schmitt to saw their 9-ply rectangles of wood into custom skateboards. Hosted by Converse Cons at Chemistry Creative in Bushwick, Schmitt was part of a team that included Brooklyn-based designer Grotesk, and local pro skater Aaron Herrington, conducting a workshop titled, “Making & Designing Skate Decks,” as part of the Cons Project’s free community program.