I am trying to find a cheap way to make some through holes in glass or
fused silica. This is for a prototype device. The holes are 135um +/-
10um and can have loose tolerance. The glass substrate thickness should
be at least 100um. The hole profile is not very important. We want to
make a small number of holes (say 4x4) with a pitch of 500um. We have
looked into laser drilling but the price is too high for us ($3000). It
seems that very small diameter diamond drills of this diameter exist but
I don't know who can provide this service, because air bearing drilling
machines are required. Does anyone have a low cost solution? Thank you.
Ben
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