My copper arrived by mail today and I solved it while eating dinner, at least I think I did. The dots are lined up but the pin won't drop. I've been tapping and shaking for a while now. The other puzzles I own opened fairly easily, but this one is being a pain.
Does the smaller pin make it harder to get it to drop out of the sleeve?
I got the pin out. I left the puzzle in a stand over night and when I checked it today, the pin had fallen. It looks like there was too much grease in this one. There's a thick coating over the whole second half of the maze.
I have got to the end of copper and am having trouble to get the pin to drop as well. Its been put in the stand to see whether it frees itself overnight.
Likewise, all the others I have done the pin dropped at the end fairly quickly, with at most a little tapping required. At this point I cannot say how much grease is on the pin and maze, but may be there is something about the different sized pin as well.
Well even after overnight in the stand the pin refused to drop. I went with applying some heat rather than cooling it down, my thought being that this may help if the problem is too much grease. A few bumps after this and its finally open.
Mazes like this (green also falls in the same category), I don't know what to make of them. If you track/map where things are, you don't get stuck on where to go, but actually doing what is required can take some work and can feel frustrating when you keep falling into a trap. However when finished, it really does feel like an achievement. The big question now is, do I put it back together knowing that opening it again will take some work despite having done it before, or do I leave it open, only closing it if I decide I want to do it again.
I always close my maze, but leave the holes lined up in case I want to re-open or reset to solve again. My logic for closing the maze back in there is to stop hair and stuff from being stuck in the maze paths.