Occasionally package leadframe loses integrity. Normal options are to rebond or microprobe. But I don't have a bonding machine and there are too many pins to microprobe. Exploring building a probe card
TODO:
Include:
Examples:
My milling machine will do maybe up to 2 mil ⇒ 50 um
Hmm this sounds too imprecise
Laser drill kapton, mylar? Should be very precise and strong enough
http://www.tek.com/dl/Probe_Card_Tutorial_WP.pdf