[KMachell]

Hi Folks,
I am planning on building a 150mm F/7 apochromat.
Does anybody know a reliable supplier of optical glass blanks in Melbourne, or anywhere in Oz for that matter?
I have only found suppliers in USA and China who seem reluctant or too busy to reply to us down under.
Mirror blanks seem to be readily available, but BAK and Flint not so.

Thanks.

Ken