Batarang
thingiverse
In my initial posting, I shared a straightforward Batarang design; however, adjustments may be necessary for optimal scaling.
Download Model from thingiverse
With this file you will be able to print Batarang 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 Batarang.