Presented worm gear reducer with module 1.5 and 60x10 (6:1) teeth on driven gear and minimalistic frame that hold all details together. Also included motor adapter that I used to connect motor to worm part. All details connected using M4 bolts and nuts.

Print "M1,5 - Worm 20x28 mm - With Hole.STL" as worm with high quality (I printed 0.1 mm per layer) and "Worm Gear - M1.5 with 60 teeth x 20mm with M2 10 teeth gear (Flat Spokes).STL" or "Worm Gear - M1.5 with 60 teeth x 20mm with M2 10 teeth gear (Round Spokes).STL" as driven gear (I printed in standard quality 0.2 mm per layer). Case consists from two details: "Case (Left Side).STL" and "Case (Right Side).STL" and fit just fine motor with outer diameter of 28 mm that I have. Optionally you can also print and use motor connector that I used. It consists from two parts "Motor Gear Connector (Sliced) - 2.STL" connected with M3x16 bolts with M4 nut inside.

Assemble all details together using M4 bolts and nuts. Have fun!