Pretty simple project but it had to me made. The tommy bar on my chuck key never seems to be in the right position, or hitting on something especially on the RT setup. So milled a square on 1/2" ex stock & use my socket wrench. It works as planned but my only observation is the socket is a bit loose for my liking. Maybe I could buy an el-cheapo & bond it on or something so its wrench ready. All I had was 12L14 which probably isn't the most robust alloy. Surprisingly I have very little hex stock for some reason, I should use it more.