you should call some local glass shops and get some qoutes! machine edge is the way to go...is this going to be braceless? the glass cages glass will be seamed by hand ,and still have a wavy look to the edges.
this is a bad pic, but gives you an idea what to expect from hand seamed edges. good luck and check into ge sc series silicone or rtv108. look for an adhesive rather than a sealant if that make sense.

this is a bad pic, but gives you an idea what to expect from hand seamed edges. good luck and check into ge sc series silicone or rtv108. look for an adhesive rather than a sealant if that make sense.