Got this puzzle at a craft fair one time and the guy had it arbitrarily labeled as "Medium"; no idea what the actual name is other than that. Recently rediscovered it on here, but the model was a bit small; so I made it larger (75mm instead of 50mm) and added some chamfers to the corners to make it better for printing (parts take up 115mm x 155mm altogether).

Printed with PLA at 0.2 layer height and Cubic infill set to 10% (after splitting all the parts into separate objects for better infill calculation).

As always, any input or suggestions are welcome.