Stop & Shop Key Fob Frame

thingiverse

I've been noticing that a lot of my key FOB membership cards are getting pretty worn out, similar to the Staples FOB image. To keep mine from taking a beating, I decided to design a small frame to protect my Stop & Shop FOB, which I use most often. My goal was to make it flexible and as compact as possible. Initially, I thought about adding a slit at the end of the frame where the key ring passes through. However, trying to cut away supports proved to be quite challenging. In the end, I decided on a 2-piece design that consists of a body and an insert. To assemble it, you simply need to glue them together. First, insert your FOB into the frame's matching ring holes, then place the insert on top and apply a small amount of Acetone (for ABS) or super glue between the two pieces. UPDATE: Given that I usually carry several keys and other items in my pocket, my original design wasn't standing up very well. To address this issue, I designed an outer body that can snap over the original frame without requiring any glue. This new design still maintains its slim profile while offering added protection for your FOB. I used ABS plastic, a 0.4 nozzle, and a 0.2 layer height when printing my design. To ensure it was strong enough, I opted for 100% infill – although I only needed two layers, so the extra infill may not have made a difference in this case. Since I didn't use any supports during the printing process, my filament was oozing slightly, which caused my layers to be wider than they should have been. If you decide to print your own FOB frame, you might want to scale down the insert by 1-2% to ensure a snug fit. Unfortunately, I didn't have any purple filament available when I printed mine.