The last attempt at making an effective hot knife still didn’t work, so I slummed it back to exact-o knife and a lighter. Turned out great! haha The end design was refined (red was the tester, white is the final) to make it smaller, but also stronger around the strap. Feels pretty good now. Just need to sew both ends and thread it up, but ran out of time tonight. I’m a little worried that the webbing I have is too slippery, but will see how it feels once it’s hanging with the weight of a guitar on it. Fingers crossed for nice stitches and stable positioning.