I am having a heck of a time twisting three strands of 20 AWG by hand.

From the source spools I pull about a foot each and twist that portion, wind it onto another smaller spool, then repeat the process. It is going so slow and my hands and fingertips are hurting already, not to mention strain on the wrists put by constantly performing a corkscrew motion.

Is there an easier way to get this done? I do not have a backyard - I live on the top floor of the apartment building. Stretching the wire outside between two trees (if there were any in this concrete jungle) and use a cordless drill isn't really an option. Did I mention that space is pretty tight outside, in 2-300ft I'd probably bump into another building.

Thanks.