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This drill press should also be functional with a nice table. It would be easy to take a production drill press and swap a 12VDC motor in it with a battery. The cheapest new press I found was $70 but you could probably get one off ebay for cheaper.
I'm not sure what the top of a drill press spindle looks like but the top of a mill spindle is a hex shaft that you could spin with a cordless drill and a socket. That's another possibility.
If you wanted to go all custom you could just mount a 12VDC corless drill to some sort of frame with a spring loaded rack and pinion mechanism to raise and lower the chuck. I found a new 12VDC cordless drill w/ keyless chuck for $15.
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Teacher/Engineer/Machinist - Team 696 Circuit Breakers, 2011 - Present
Mentor/Engineer/Machinist, Team 968 RAWC, 2007-2010
Technical Mentor, Team 696 Circuit Breakers, 2005-2007
Student Mechanical Leader and Driver, Team 696 Circuit Breakers, 2002-2004
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