I have to offer borosilicate blanks with a diameter of 20-50cm.
Each blank is machined using diamond tools and then annealing.
I can make the blank with an unusual shape, for example hexagonal.
I'm happy to do something very custom.
It is possible to perform FEM analysis.
Production time (depending on order) is about 2 months.
An advance payment of approximately 30% is required.
Price of 40cm diameter blank is about 400euro + shipping cost (shipping from Poland).