Students can choose to make a clock with just the clock face (the clockwork has a hang up slot built in) or add a back plate or add the back plate and a front plexi glass. The shop budget supplies the clock work and the clock face material. I bought material for the back plate (thank you Metal Source of Woburn MA for you support) and the plexi. The kids who want to these pieces buy them from me for what I paid for the material.
