The Slinghammer - a 3d printed repeating crossbow for different sizes of steelballs. We like shooting with bow and arrow in our backyard (which is really huge and surrounded by fields). I also want to buy a repeating crossbow, so I was watching several review videos. I landed on a video of Jörg Sprave's Slingshot Channel https://www.youtube.com/channel/UCVZlxkKqlvVqzRJXhAGq42Q where he is showing a 3d printed crossbow. (And which has enjoyable content at least for me - großes Lob und Danke Jörg, solltest Du das jemals lesen, Grüße aus Österreich) I looked it up un Cults3d and was totally hooked. A few clicks and Euros later the files were mine. Huge shoutout to Dondipper on Cults3d, great work. I built it in the 10mm steelball version (materials below) and tested it with 9,5mm steelballs and it totally blew my mind. Great quality and great power. General advice: - use something to make the string glide like string wax or silicon spray - wear safety glasses. If that steelballs hit anything hard, they will bounce back - be aware that there is no locking mechanism, so only cock it, when you are going to shoot Files on Cult3d (files for printing, instructions, variants): https://cults3d.com/en/3d-model/various/slinghammer-repeating-slingshot-slingbow-crossbow-pistol-gun-for-8mm-steel-balls-dondipper original Video of Jörg Sprave: https://www.youtube.com/watch?v=xtF17KhF0D4 Things I used (Some of the following links are affiliate links marked with * in the description, which give me a little commission without changing the price for you.) PLA I used in this video for printing the parts according to instructions*: Snapmaker black: https://amzn.to/3u7alBW set of springs* (every type that needed is included) https://amzn.to/3QGCeJN set of different steel ball sizes*: https://amzn.to/3UwBWHz 10mm steel balls*: https://amzn.to/3w6WpcG EKArchery Cobra 80 lbs limbs: https://www.ebay.at/itm/134298864168 I ordered the scews here but they are available in any hardware store https://www.schraubenking.at/ General Setup: I use a Raspberry Pi for Octoprint (Model 3B or higher, I use 3B)* https://amzn.to/3O7qv4B Take a look at Octoprint here: https://octoprint.org/ find Snapmaker products on Amazon*: https://amzn.to/3AOYjNN Stand for filming with mobile phone* (which is really great): https://amzn.to/3G0jO0O Cameras I use for filming inside enclosure and as webcam*: Logitech C920 Full HD*: https://amzn.to/3JJNnpX Logitech Brio 4k*: https://amzn.to/3YUmYKe I use a Raspberry Pi for Octoprint (Model 3B or higher, I use 3B)* https://amzn.to/3O7qv4B Take a look at Octoprint here: https://octoprint.org/ things I use for measuring*: sliding caliper*: https://amzn.to/3NesULp goniometer for angles*: https://amzn.to/3Rdj8do try-square*: https://amzn.to/3NgP9QC My desktop setup: LG C2 42" OLED*: https://amzn.to/469fNBz ElGato Stream Deck*: https://amzn.to/47rkHM1 similar straight version*: https://amzn.to/3ucXe2n Mic*: https://amzn.to/49Vxlmy Audio Interface*: https://amzn.to/3Ui0Qt0 00:00 Start 01:09 printing the parts 01:25 finished crossbow 03:16 shooting increasin layers of cardboards 05:56 shooting cardboards, birch wood and mdf 08:30 closeup