I’ve built a few modern looking mono stringer stairways and here’s a post on how it usually goes. The stairs I’ve done have had different ways of attaching the treads, but they’re all similar.
Building a 7′ Wall Clock
Recently I was tasked with building a 7′ wall clock at a property management company and here’s how I did it. I’ve never built a clock before, so there was a fair amount of research to determine what clock motor to purchase that could run such long hands. Eventually I settled on a C1MI-G1 from Electric Time Company.
Building Curved Railings
I’ve been making straight railings for years now, but I’ve finally been commissioned to make a curved set. The main challenge to overcome is accurately measuring where they should go, and then building them to close enough tolerances that they’ll fit. There’s also a curved stairway which presents its own problems. As the rail curves the horizontal bars also need to twist, otherwise they will be at a weird angle by the time you get to the bottom of the stairs. In boat building it would be like cutting a rolling bevel.
Building a Cantilevered Stairway
The first complicated job I did after setting out on my own was a set of cantilevered stairs.
Here’s a CAD model of what needs to happen. A C channel gets attached to the wall, tread supports get bolted to the channel, and railing gets fastened to the tread supports. There’s also a separate landing assembly that bridges over the stairwell to the basement.