I was very proud of my endeavor here. I wasn't sure if I was gonna be able to figure out how to weld this stuff together. As its proprietary, I wont give the trade secret on it. I will however say it has everything to do with controlling heat. Dont bother trying to weld it in mid air. The lowest setting on my 250 just kept melting the wire before I even came close to it with the tungsten. It is only .02" diamter. So I learned how to manage the heat a little bit. I'm sure most of you experienced welders could easily figure it out. Being I am still at my stage in the game I was surprised I got it to weld. Just needs a little grinding on the miniwheel. Its very strong. Ive put it under a lot of stress and havnt broken it. HeAttachment 1469Attachment 1470re is a pic of my nitinol wire loop.