Transforming sphere robot

Even with 3D printing in mind while designing, this print still tests your bed adhesion, overhangs, over/underextrusion, printing curved surfaces, debossed printing on curved surfaces, printing tall thin objects, printing small embossed features and more. Because its sphere design allows only a small portion of the parts to be in contact with the bed, weighs only a few grams, this makes a great printer tester. Everything is oriented correctly, supports are only needed under those big blasters of his and brim is advised but not necessary if you have your printer dialed in. You can print it in any layer height you want but it has some fine details which are better shown in lower layer height. For the inner core I would suggest to use PETG, ABS, ASA - something more flexible because of the snap joints. The outer shell can be printed out of any material but the PLA is the easiest to print. Number of parts is in the picture below and I prepared two beds so you can print everything at once.