Polishing does more damage to metal puzzles than solving ever will. Here is what conservation guidance says about tarnish, plating, humidity control, handling, and the storage materials to keep away.
A puzzle that slid apart easily in August can lock solid in January. The cause is equilibrium moisture content, and understanding it tells you what to do and what never to do about a seized puzzle.
Cut style is the single most important thing about a puzzle that never appears on the box. Ribbon and random cuts change how much information each piece carries and how many false fits you will hit.
