Circular Puzzle

This puzzle has a frame glued to the base, within which the puzzle pieces fit. The frame can be excluded as the puzzle works without it. However, I have found the frame to be useful as it helps to confuse the person trying to complete it! (Spoiler alert: the puzzle is easier to solve working from the centre outwards, whereas having the frame tends to lead a person to want to solve it from the outside inwards!)

Puzzle was laser cut from 3mm MDF, but any material and thickness can be used.