Split-Flap Counter

CHANGELOG:

• 2024-01-05: Added an optional stop bar that should improve reliability by a lot.  Use the “with stop bar” variants of the “Support - Separator” and “Support- End” parts to use it.

This is a *really* basic split-flap counter that can be extended to an arbitrary amount of digits.
It can be a bit capricious so there is definitely a lot of room for improvement, feel free to remix it using the provided step files :)

You can refer to the pictures to understand where each part goes but to sum it up you'll need to print:

• 1x Support - Base (+1 per extra digit)
• 2x Support - End (one of them should be the “with stop bar” variant if you want to use the stop bar)
• 1x Wheel
• 10x Card (+10 per extra digit)
• 1x Secondary gear - Full (+1 per extra digit)
• 2x Main gear - Gear (+2 per extra digit)
• 2x Main gear - Spacer (+2 per extra digit)
• 1x Main gear - Shaft (+1 per extra digit)
• 2x Main gear - End pin
• 1x Ratchet - Left (+1 per extra digit)
• 1x Ratchet - Right (+1 per extra digit)
• 1x Digits (+1 per extra digit)

And only if you have more that 1 digit:

• 1x Secondary gear - Single for each one of them
• 1x Support - Separator for each one of them (use the “with stop bar” variant if you want to use the stop bar)
• 2x Main gear - Separator Pin for each one of them

I also added two variants for the support walls if you want to use a bit less filament.

Some extra notes:

• No support should be required except for the “Support - Base.stl” file
• The amount of glue needed may vary depending on the tolerancies of your printer. If things are tight enough I wouldn't bother gluing them together
• Make sure that everything is squared and flushed correctly, if you don't some things might get stuck or end-up being a bit too loose
• The wheel handle should print in place and spin freely afterwards
• Add the cards as the last step by slightly bending them. Start by the most leftward digit since, for that one, it doesn't matter which card goes where. Be careful not to damage the pins during that process.