Clapper
thingiverse
A Tiny Slate Board Slaps Silently. The all_dont_print_this_one.stl file exists solely as a reference point, do not attempt to bring this digital template to life in physical form.
Download Model from thingiverse
With this file you will be able to print Clapper with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Clapper.