Precision Machining & Tool Technology
Click HERE to LINK to the BFHS Precision Machining Presentation (PDF)
Instructor: Mr. Ronald Sizer
Email Address: RSizer@PhilaSD.org
Mr. Sizer was raised in a family of Machinists. Mr. Sizer was grinding metal before attending seventh (7th) grade. Mr. Sizer attended Abington High School where he graduated 1994. Mr. Sizer worked in Metal and Wood shops as a Machine Operator for six (6) years (1995-2002). In 2002, he began training at the National Center for Defense Manufacturing and Machining. There, Mr. Sizer was certified in Computerized Numerical Control (CNC) Mill Programming, CNC Lathe Programming and Geometrical Dimensions and Tolerancing (GD&T). Mr. Sizer furthered his training at the HAAS Machining Factory, where he completed Advanced Lathe & Mill Programming & Machine Set-Up Courses. Mr. Sizer worked on National Defense contracts, which consisted of making parts for the military’s submarines and aircraft carriers. Additionally, Mr. Sizer was also responsible for making Aerospace parts for American Airlines.
In 2011, Mr. Sizer switched markets and began making parts for the Medical Industry. He machined important parts & components such as bone files, bone replacements, small devices for heart issues and operating equipment for medical professionals.
In 2017, the School District of Philadelphia (SDP) reached out with an offer to teach CNC skills to Philadelphia’s youth. Mr. Sizer was one of the only African-American Machinists in the Greater Philadelphia region, so it was important for Mr. Sizer to take the chance and teach the skills to inner-city children to give them an opportunity to grow in life, and prosper as he did. For Mr. Sizer, watching the students grow, learn, graduate and gain employment or enter trade school is the most satisfying feeling and confirmation that I made the right decision in joining the School District of Philadelphia.