I am constructing a nitrogen burst development tank for 4x5 negatives. The design I have considered requires drilling tiny holes (#76) in 1/8" or 1/4" acrylic (these are the passage for the flow of nitrogen from the plenum into the bottom of the tank, Gordon Hutchings). I am having difficulty in this department with breaking the drills.
I am looking for a solution to this problem, or possibly an alternate method within the nitrogen burst development realm.
Thanks for any advice. Dave
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