Throw your soft darts like a ninja! 

Just insert 8 soft darts points with a common 2BA thread.

To be honest: It's just for fun! In my tests only about 50% of the throws stuck in the board. You need to throw with less rotation than with a normal throwing star.

I printed both PLA and ABS with 0.10mm layer height (!), 4 walls, 25% infill and without support. Printing with a .2 nozzle produces cleaner and more stable threads,  so I recommend it, but .4 nozzle also works.

I widened the walls of the 2BA threads only by 0.05mm, that's not very much for 3d-printing but brought the best results on a modern printer. Depending on your printer you may need a tool to screw the points in. 

Please don't over-tighten, the threads are very fine!

You may also print the test piece first. It needs less than 1g of filament.