There are two drilling spindles.  When glass is put onto the table, it is fixed pneumatically and the lower spindle will rise up automatically to drill. The upper spindle will drill the top side of the glass and thus, the hole is drilled.  The cooling water runs inside the core drill so that the cooling effect is directly acted onto the glass without any loss. Tapping or chamfering can be made on the hole for your particular purpose.

 

The spindle design is sophisticated such that it is strong for 24 hours running a day.  The rigid and anti-corrosive spindle enables maintenance-free.