All invited to try computer-aided design (CAD) on the platform used by engineers and product designers, followed by a chance to 3D print a design. No experience needed. Geared toward middle school students, but all welcome. 10 a.m.–noon, WCC, Technical & Industrial bldg., rm. 241, 4800 E. Huron River Dr. Free, but preregistration required at bit.ly/wccsteam.