Mesmerizing Concentric Square Fidget Toy

The Mesmerizing Concentric Square Fidget Toy is a compact desk accessory that provides tactile stimulation for stress relief and concentration during work or study. Its design consists of a series of nested squares that rotate freely, making it well‑suited for FDM printers that can resolve fine horizontal details without requiring support structures. For reliable prints, orient the model flat on the build plate and use a medium layer height (around 0.2 mm) with an infill of 20‑30 % to balance strength and flexibility. Adding a thin brim helps prevent edge lifting of the outermost square during the first layers.