I just got a job to do some deep hole drilling in Plexiglas. This needs a bunch of 0.6mm holes 20mm deep! That is 33 X diameter, which sounds difficult. I expect to peck drill it, with flood coolant and brushing the chips away. I've machined a lot of Plexi, but never anything like holes that deep.
Does anybody have any suggestions on how to do it without a catastrophe?