Will wrote:
For a related question, why should the puzzle be put int the fringe? I have seen mentions of that everywhere in the forum, and still did not understand why.
Will, sometimes mazes get a little tight when using them. This may be because the warmth from your hands and also because you are moving metal parts against eachother.
The pin, spring or other maze parts expand and so this makes the puzzle tight and sometimes has been known to seize.
Putting the Revo in the fridge or freezer let's the metal contract back to its designed use and therefore it becomes free to work.