Tried to drill holes on the PCB using my Draper Multitool. With a little practice I managed to drill holes for a 12 leg IC. Even if it proved to be succesful, it’s hard to drill precisely with the Draper. Since the heaviest bit, the battery is in the end of the tool, it’s like drawing with a pencil with a brick attached to the end.

Therefor I purchased the cheapest drill stand possible. As far as the multiplexers concerned, ordered 10 of them with SMD packaging. That will save me exactly 48 holes to drill.

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