I happened to find itThis awesome original mini crossbow design

However, I encountered several key problems when trying to use it:

- Crossbow arrows and launching:It's very difficult to load the crossbow arrows. When trying to pull the string, there's almost nothing that can help you position the crossbow arrows properly. More importantly, I can't make the crossbow arrows "hook" onto the central parts of the body. I can only use the crossbow by manually pulling and releasing the bowstring, and this is true for a variety of materials and printing configurations.

-Contact with the print bed:The support of the bow arm
 

I set out to make some improvements to implement the concept of casually loading crossbow arrows, pulling the string, and pulling the trigger. A few small changes made it more reliable and more fun!

The crossbow arrows have been adjusted to have a more obvious and tangible tail hook and a more effective string groove, so that the force of the bowstring can properly fix the crossbow arrows in place. The string groove is located slightly above the centerline of the crossbow arrows, allowing the tension to be forward and

The tip supporting the bow arm has added some material, so it won't print in mid-air. The toy is now more durable because that part is shaped correctly. Finally, the trigger has been reshaped according to the new shape of the crossbow arrow, and it functions better

I modified the cards to help distinguish them from the original version, and there is an extra crossbow arrow card in the second deck. A card-free configuration is also provided.
 

It's the same as the original version.https://www.printables.com/model/525870-crossbow-kit-card-fully-printed)。PLA can be used, but it's very hard and won't last long. ABS is great, and PETG is also good. It actually shoots out arrows with a lot of force, so be careful around crowds and pets! Have fun!