Mini clapperboard with hinges printed in place. One-handed operation and compatible with A1 mini. To get the two-color effect without AMS, you need to pause at layer 61 to change to white filament.

If you write directly on a filament-printed board, there is no way to remove it even with a whiteboard pen. You can place a piece of clear plastic or stick a 5x3 inch post-it note and write on it.

If you just need to sync sound, you don't even need a print the board. The sound of the clapper is really nice. Trust me, you'll love it even if you're not a director.