Security is always an issue but occasionally you want to have your place of business more inviting. A simple clamp pinches the crash bar closed thereby temporarily unlocking the door. Having done this numerous times the trick to having it work the first time is to make sure the unit is not too thick and the fingers will fit between the backside of the crash bar and the window of the door. The nice bright yellow alerts someone that the clamp is on. In this case we personalized it for the venue so it doesn’t walk off.

The part was developed in SolidWorks and printed in ABS on the Makerbot in 3 hours, 5 minutes.