Vault-like jewelry box

My friend had a key on a necklace. When she told me it didn't open anything, I knew I needed to give that key purpose. So i measured it and designed a jewelry box to fit the key.

The clear front is laser cut 3mm acrylic.

Some bushings were made from 2.5mm*0.225mm thin walled brass tube cut with a Dremel.

Off the shelf parts list:

24x washer M2x4x0.6

03x bearing 10x5x4

18x nylock nut M2

18x socket head screw M2x12

Estimated assembly time is 2h. Estimated print time is >20h. I printed everything in 1.75 PLA on a Prusa i3 MK3 at 20% infill. In some rare cases I had to flip a part upside down to avoid infill. In even less cases I had to turn infill on. I try to avoid it.

This is another great creation from http://MarginallyClever.com! Follow @imakerobots on IG for all the latest robot goodness.

See the bill of materials for the quantities and source of each part.

Support me through Patreon: https://www.patreon.com/imakerobots

Or make a one time donation: https://www.paypal.me/imakerobots

Every like, share, and subscribe helps!

Blog: http://marginallyclever.com/

Instagram: https://www.instagram.com/imakerobots

Facebook: https://www.facebook.com/MarginallyClever

Twitter: https://twitter.com/aggrav8d

Discord: https://discord.gg/Q5TZFmB

Custom Section

ratio calculator: http://www.thecatalystis.com/gears/

sun: 36 teeth

planet: 18 teeth

carrier: 72 teeth

planet to sun center-to-center: 112.5mm

secondary gears:

center-to-center: 105.5

large gear: 40 teeth

small gear: 12 teeth