Mechanical flip sign FREE / STOP

The Idea:

• Animation
• main intention for a Bathroom with the STOP / FREE plates, but there is also a blank one for custom writing 
• mounted with some double-sided tape on the door / wall

overall Dimensions:

Print recommendations:

• no supports needed
• 100% infill on everything except the frame
• I used painters tape for the small parts to adhere well on the built plate

Orientations:

• frame, rack and sidepanel should be obvious
• the gears have a chamfer on one side, print these facing up
• the flaps are cut deeper for the hate letters to compensate overhang, so print these facing down

Post Processing:

• only clean up the edges to allow a good fit

Additional Parts:

• 2 x M2x4 mm (or up to 8 mm) but should also work with some glue instead of the screws 

Assembly:

• these should be all your parts
• first you put the gears on the flip signs
• there is a little chamfer on the inside of the gear cutout that should help you sliding them in
• it's a tight fit, so no glue should be needed
• the teeth should be facing to the letters
• now you can insert the signs with the attached gears into the frame
• align the letter all showing love
• put the rack onto the two pins of the side panel, moved all the way to the left
• now comes the fiddly part, you have to align the teeth of the rack with all the spur gears while also feeding the pins of the flaps into the side panel
• it's not as hard as it looks since the teeth are already aligned when the rack is on the outer position of the pins
• at last drive in the screws while holding everything together
• the little edges on the side panel should help you align it all properly