In honor of both DIY Movie Making Month and our ongoing love affair with simple machines that hurl stuff, Jeff DelPapa, founder of NERDS (The New England Rubbish Deconstruction Society), sent us a link to this time-lapse video of a group of teens building a trebuchet. Jeff describes the video as “stone-simple…120x real-time, using a webcam, 8 hours in 4 minutes.” He’s planning on doing another trebuchet build with teams of adults, in late April, early May, as a fundraiser for the Charles River Museum of Industry.

CRMI Spring Fundraiser: Be a Siege Engineer