Needledart for airguns 4.5mm (.177)

Inspired of the famous Jörg Sprave and his “sixneedler”, i created a simple version of the darts for 4,5mm (.177) airguns. I printed it from TPU one at a time with random seam. Looks ok to me :-)

The maximum powerlimit here in germany is 7,5 joules. My airpistol only have around 6,7 Joules. The projectile with the needle (simple cheap blowgun dart) weights 0,53g. So its nearly the same as a standard diabolo. It penetrates a 19mm thick piece of wood and the pointy tip looks out on the other side. You have to test print until you have the perfect fit in your barrel. Have fun and be carefull