Trebuchet Week: Make 'em Think - The kids design, build and test a trebuchet. The goal? Hit their Physics Teacher in the face with a water balloon at 35 meters. We are joined by that teacher, Mr. Pat Kaplow of Windham High School.

A Surface Grinder Finish Puzzle - I worked with John Saunders @nyccnc to noodle out a weird surface finish puzzle. I consulted with @ROBRENZ , and we had the epiphany.

Another 3D Printed Grinding Jig - holding gage pins for end grinding... to use as a cutting tool?!??! We are joined by Ike IG: @unixcarbide, and @unixcarbide6724 .

Links for products/designs mentioned are at pfg.gg/links

Follow me on Instagram at "spencer_webb_nh".

("PFG Stones®" is a registered trademark of Kinetic Precision)