Hidden Drive. Joining stair handrail sections requires painstaking fitting and fastening, but the EasAlign system by Crown Heritage can make the job easier. Using jigs that fit several different railing profiles, you drill holes for a dowel and a special hidden fastener; a rotating magnetic device powered by a cordless drill snugs up the joint. The invisible fastener can be loosened for future disassembly. The kit costs $699 and includes enough fasteners for 30 joints. Refill fasteners cost $11 to $13 each. Crown Heritage, 800/745-5931. www.crownheritage.com