CB Range discussion

I recently acquired a 6K and discovered it’s fairly easy to remove using the smallest spacer along with the third ring size (which is the tightest I can comfortably and safely manage). I’m considering getting a frenum piercing for extra security. My main concern is avoiding any risk of losing my ability to urinate while standing, which is why I’ve decided against the standard PA route. Now I’m pondering how to secure a frenum piercing to the cage; however, most solutions require modifying the cage itself.

Drilling or Dremeling an 8-gauge hole through the polycarbonate without causing cracks—how tricky is that? Additionally, does anyone have experience with adhering items directly to the cage? I’m leaning towards gluing a small plastic piece onto the exterior of the cage to provide attachment points for locks, and I want this bond to be as robust as possible. Different adhesives likely perform differently here. Unfortunately, my options are limited since I only own one cage, leaving little room for trial and error.

Thanks in advance! If this frenum modification succeeds, it should bring the entire chastity experience much closer to what I envisioned.