Ya, I know it is a HUGE stretch but thought I'd explore it if just for a minute. There is a 2 foot square corner of my future 3 shelf layout that is begging for a helix between the bottom and middle shelf. Parameters: 15" Rise - Approximate distance from shelf to shelf with some wiggle room 6% Grade - ya, I know it is steep but I've done it before - and it worked. 11" Radius - It is s 2'x2' space with no wiggle room Am I crazy? Probably. Alternates: None - The most practical sollution Ramp / 'Nolex' - can't be done because it would block the living room window and by extension violate the land grant from the "Ministry of Acceptable Living Room Usage". I truly don't believe this is a viable option but I'm open to suggestion or gales of hysterical laughter.