This crossbow is intended to be a fun, fast-printed toy with reasonable durability and power. I test-shot the crossbow 436 times before the 3D-printed string broke. The crossbow shoots around twenty-five feet or so depending on the angle of the projectile when launched. It is not as durable as I had hoped, so I will possibly attempt to fix this in the future.

Print Details: 

1. No supports are needed. 
2. Use three perimeters.
3. No assembly is required. Just unattached the model from the print bed and fire away.

Note: I printed the crossbow on an MK3S+ Prusa printer using Hatchbox PLA black, a nozzle diameter of 0.4mm, and a layer height of 0.2mm. 

I speculate that PETG would work better, but I don't have any so I have not tested to see if it works.

Don't do's if you want your crossbow to last.

1. Do not dry-fire the crossbow.
2. Please do not leave the crossbow in the sun or a hot environment, especially when it is made out of PLA.
3. Do not leave the crossbow drawn back for extended periods.

If you have any issues, let me know.

Happy Printing!