This 3D printed puzzle was designed by the prolific burr puzzle creator Christoph Lohe. It is being sold with his permission and he will receive a percentage of the sales. This puzzle is a good sized 3D print.
Burr Lock E is a burr puzzle with the appearance of a padlock. The main challenge is having the key installed vertically, and to disassemble as well as re-assemble the puzzle. Burrtools level 26.
If the key is installed horizontally then Burrtools finds the same level, however, this side challenge shows a rotational shortcut after the 11th move. For the main challenge no rotational shortcut was yet found.