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My veion of 3D printable Stirling engine. You can see a bit of the process of assembly and operation of the engine here: Check my I3 Mega ULTIMATE upgrade guide! There is a lot of knowledge which may help You get the best 3D printing results. You will find it here: Tips: Make sure that Your printer is calibrated well before printing. Do not fix syringes too tight because glass will bend a little and it will create a lot of friction iide. Pisto must be polished with fine sandpaper to move freely iide cylinde, but without losing too much pressure. Angle between the cranks must be 90 degrees. Part list: 12 x M8 Nut 12 x M3x10 Screw 18 x M3 Nut 2 x M3 self-locking nut 8 x M3x14 Screw 4 x M3 Washer 6 x M4 Washer 4 x M4 Nut 1 x M4 at least 44mm long screw with counteunk head. You need to cut it to right lenght. 2 x 604ZZ bearing: 4 x 683ZZ bearing: 2 x 10 ml glass syringe: Heat resistant tubing to connect the syringes. Heat iulating material. Thin copper wire. (These are affiliate links.) Printing part list: 2 x connecting_rod 2 x flywheel_support 2 x piston_mount_part_1.stl 2 x piston_mount_part_2.stl Every other part needs to be printed once.