presission stone sphere machine

Ball/Spherical Grinding - practicalmachinist.com- presission stone sphere machine , · Does anyone know of a machine for grinding a spherical or half shpere? ... Check the thread on generating a sphere on a mill with a boring head, ...Precision glass moulding - WikipediaPrecision glass moulding is a ... The process is executed on a specialized moulding machine, ... the cavity is only pre-machined to a flat or a best-fit sphere.