8 key logic puzzle

*EDIT I modified design so it works better, i added washers to go between wheel things and changed design of pin to be same as axis. So images are little not up to date but i think it still okayhere are pictures of how it is assembled: You have 8 keys, each with a unique shape. You need to insert them into the correct position out of 16 possible options. Then, you can use a pin to test if you have solved the puzzle. If the pin goes through the hole, you have unlocked the puzzle!Thanks for downlo