Eccentric Lapping-Polishing of Glass Components up to 900mm Diameter Lapmaster is offering this state-of-the-art dual-faced oscillation system to process glass discs, panels or plates as large as 900mm diameter (or 900mm ......Eccentric Lapping-Polishing of Glass Components up to 900mm Diameter Lapmaster is offering this state-of-the-art dual-faced oscillation system to process glass discs, panels or plates as large as 900mm diameter (or 900mm diagonal). Essentially, this machine enables the user to obtain several benefits of double-sided machining, without the cost (or footprint) that a double-sided machine would mandate to process such large parts. The component is place in a carrier template which rotates on its own axis, sandwiched between two (2) independently driven platens. The system does feature variable speed drive upper and lower plates, as well as a variable speed carrier plate servo drive. More information...