Mistake: Skipping the Sanding & Dry Fit.
Correction: Out of the box, wooden pieces may have tiny burrs. Rushing causes friction and forced fits. Always lightly sand connection points with the included sandpaper. Then, perform a 'dry fit'—assemble sections without glue to ensure everything aligns. This five-minute step prevents 90% of frustration. For metal puzzles, gently run your finger along edges to check for roughness.
