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UPDATE:
I've doubled the diameter of the Archimedes screw shaft to make it more durable. I've also added a hex boss for the spur gear to attach.
The updated files are: marble-coaster-lift-v2 marble-coaster-screw-v2 marble-coaster-lift-top-v2 marble-coaster-spur-gear-v2
Lego compatible marble roller coaster with Archimedes screw lift.
Should work with 14.5 to 16.5mm diameter marbles or bearings.
These have a very tight fit with real lego pieces with my printer (your mileage may very).
Uses this Lego TT motor.
Parts required for lift (see post printing notes): marble-coaster-lift-v2 - 1 marble-coaster-screw-v2 - 1 marble-coaster-lift-top-v2 - 1 marble-coaster-pinion-gear - 1 marble-coaster-spur-gear-v2 - 1 marble-coaster-lift-ramp - 1
Parts required for short track: assembled lift - 1 marble-coaster-straight - 7 marble-coaster-short-straight - 1 marble-coaster-ramp - 6 marble-coaster-180 - 3 marble-coaster-180-banked - 1 marble-coaster-90 - 3 marble-coaster-90-banked - 1
Parts required for long track with switch: All parts from short track minus two 180s marble-coaster-switch - 1 marble-coaster-switch-blade - 1 marble-coaster-180-short - 2 (these are used right after switch) marble-coaster-short-straight - 1 marble-coaster-ramp - 3 marble-coaster-90 - 2 marble-coaster-90-banked - 1 marble-coaster-short-straight - 1 marble-coaster-90-drop - 1
