By this seminar we have mentioned that by CO2 Laser it is possible to drill φ 30-50 μ m as minimum hole size although hole shape is still under study. This will give new consideration for using UV laser for very small hole drilling. Also problem of using CO2 to make hole on Copper is now under reconsideration as new technology of Copper direct by CO2 is possible by roughening of copper surface. On the other hand by introducing 200kmin-l spindle with φ 2mm shank size, drill bit life can be increased 2-3times.And it is possible to have higher productivity by mechanical drilling similar to Laser drilling since numbers of stack can be increased for mechanical drilling. By this seminar we have mentioned that mechanical drilling is better for φ 0.15mm drilling while Laser drilling is better for φ 0.1mm drilling. What will happen when φ 0.12mm drill is used which is in between φ 0.lmm0.15mm size? Since continuous new development is made on laser and mechanical drilling technology, innovation will be announced in every several months. It will be very necessary to have cooperative development between equipment manufacturers and users.
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