Servo Safety Lock

There must be over a dozen of these devices on Thingiverse. I downloaded 6 of them and could not get any of them to work. So I jumped in Fusion 360 and made my own. This one works on my servo cables and my friend's cables. I printed them with Overture PLA+ and had no problems. I had to print these with the opening facing up and print with supports on. It creates a support inside for the top tab that you will need to remove after printing. Without that support, that tab is weakened. The secret to making that support easy to remove in Cura is to set this parameter to this value:

Support Z Distance .25

That made the support easier to remove using a small flat bladed screwdriver and small needle nose pliers.