Just wanted to say hi. Been watching Joerg on YouTube for about a year, finally got inspired to register here for the M10 Hex Nut Pump Gun plans. (Good idea there Joerg.) I've made a W slingshot based on the video tutorial, it came out pretty good, I used doubled surgical tubing and it's strong enough I can't pull it butterfly. Shoots great. Now I'm making a target slingshot from laminated layers of cherry, oak, and aluminum. Of course, the eventual goal is to make a slingshot Xbow! I'm a mechanical engineer, so hopefully someday I'll have something to contribute to the community in return for the great stuff already here. Thanks for making great vids and awesome slingshots Joerg, you're an inspiration.