15 + 4 puzzle
The 15 + 4 puzzle is a hinged version of the classic 15 Puzzle, with an extra 4 tiles. If you want to buy one of these, you will need the following two prints from Shapeways: Frame: http://shpws.me/SzQG Tiles: http://shpws.me/SzQH You will also need ten 8mm long M2 bolts and nuts to form the hinges of the puzzle. I used this set: https://www.amazon.com/DYWISHKEY-Pieces-Socket-Screws-Wrench/dp/B07W5J19Y5
The 15 + 4 puzzle is a hinged version of the classic 15 Puzzle, with an extra 4 tiles. If you want to buy one of these, you will need the following two prints from Shapeways: Frame: http://shpws.me/SzQG Tiles: http://shpws.me/SzQH You will also need ten 8mm long M2 bolts and nuts to form the hinges of the puzzle. I used this set: https://www.amazon.com/DYWISHKEY-Pieces-Socket-Screws-Wrench/dp/B07W5J19Y5