HammerBot
thingiverse
I finally figured out why the HammerBot was hampered - its hammer had mysteriously vanished, but I've since resolved the issue.
Download Model from thingiverse
With this file you will be able to print HammerBot 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 HammerBot.