PCB manufacturing the easy way.

Author	Message
Warpspeed Guru Joined: 09/08/2007 Location: Australia Posts: 4406	Posted: 09:34pm 03 Apr 2020       Many years ago I was involved in a laser hole driller project that was intended to dill the very fine cooling holes (of micron size) in the very tough exhaust turbine blades of military jet engines. To get the laser beam down so small only required a lens. That not only reduced the spot size, it dramatically increased the energy density. Something pretty simple might enable you to do much better than forty thou tracks. Cheers,  Tony.