HEiL Handswich Clamp

I like the models I&#39;ve seen of clamps to hold headsets. I have two problems with this in my situation. First my desk has a 31mm lip where the entire depth bends down at about a 30 degree angle. Second I need a holder for my HEiL handswitch. This is a device I use to key up my radio so I can speak into the microphone and transmit the signal. I&#39;ve been placing it on the desk, but the weight of the cable makes it slide down. My favorite headset clamp is <https://makerworld.com/en/models/27711#profileId-38764>. I used that as inspiration but I made mine from scratch. For those interested, I am a novice at CAD and head to figure out on my own how to make threads for the bolt and the bolt hole. I found a reference to McMaster-Carr in a forum that mentioned you can download a STEP file from their website. So I downloaded a ¾&#34; 10 threaded rod file for a 3&#34; rod. I imported that into Shapr3D. I made two copies. One was used to make the bolt, the second was scaled up to make the t