This mechanical toy is just like a snow globe except the snowflakes are on the outside, you turn a crank instead of shaking it, and there is no water involved. But there is a globe and snow.
You will need to print eight “Square Bevel Gears,” seven each of the “Snowflake” and “Snowflake Adapter” and one of each of the other files.
Follow the directions here to seat seven of the square bevel gears within the “Sphere Bottom”: https://www.thingiverse.com/thing:4673064
To assemble the handle and crank assembly, start by putting the “Crank Collar” down over the “Handle Extension”, ensuring that it rotates cleanly around the ridge at the bottom. With the “Crank Collar” in place, glue the “Handle Extension” in to the “Sphere Top with Handle Attachment.”
Next you will be gluing the “Crank and Handle” on to the “Crank Collar”. It is essential that the connection is strong, but also that the grip rotates around and is held in place by the ridge on the “Handle Extension.” I recommend first putting a thin layer of Vaseline on the surfaces that will need to move against one another. This will lubricate movement and prevent any glue seepage from binding the rotation of the grip.
Do a dry fit of the key stock mechanism by inserting the remaining “Square Bevel Gear” on one end of the “Keystock” and inserting the other end through the handle extension into the square hole on the crank. You do not need to insert the keystock all the way into either hole, just enough so it is held securely. Remove the key stock and bevel gear. Apply some Vaseline to the inside surface of the sphere that will be in contact with the bevel gear. Apply glue to the ends of the key stock if needed and finish the assembly.
Do a dry fit of the sphere top with the handle and grip assemble on to the sphere bottom assembly ensuring that the gears do not bind. When you are happy that everything is properly aligned and ready to go, glue the hemispheres together.
Attach one “Snowflake Adapter” on to each “Snowflake,” use a dab of CA glue if necessary. Insert each “Snowflake Adapter” into each square hole on the globe and you’re ready to make it snow!
See here for video of snow globe in action: https://youtu.be/2SvkA6A10DY
See the "Ultimate Screwdriver" for a similar design: https://www.thingiverse.com/thing:4677188
Snowflakes are a remix of “Shadowflake/Snowflakeby” by roman_hegglin: https://www.thingiverse.com/thing:34850
