This DIY Spiral Staircase was made with just over sixteen 12-layer plywood steps that are each rotated 30 degrees around a central steel pole.Designer and YouTuber Ben Uyeda of HomeMade Modern designed the layers to be cut with a X-Carve CNC machine and assembled in his Boston loft.
source/image: HomeMadeModern
To build the staircase, Uyeda uses the CNC to cut out 12 shapes of incremental size from a plywood sheet, which he then stacks and fits around the post to secure into place.
source/image: HomeMadeModern
Each step in the staircase took about two hours to put together during the initial build before the entire staircase was carefully sanded and finished.
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The HomeMade Modern blog, which was founded by the architect, will soon make available free CAD files for the 12 shapes that were CNC-cut into ¾-inch plywood sheets along with the full photo-and-text tutorial and list of tools and supplies.
Though time-and-labor intensive, the project was significantly cheaper than most prefabricated metal spiral staircases, he estimates.
