ThinOptics Safety for Keychain Case

thingiverse

I was really impressed by the compact size and portability of the ThinOptics reading glasses. Although the keychain case seemed incredibly convenient for my needs, I was extremely disappointed that the glasses came loose in my front pocket during the first use and were badly scratched. I reached out to the company, explained the situation, and eventually received a replacement pair. However, I feared the same result would occur again with the new glasses since the keychain case had this design flaw. Therefore, I took some quick measurements and designed a small snap-on safety which should help keep the glasses securely in the case when carried in your pocket or elsewhere. It's certainly not flawless and could be improved with rounded edges to prevent snagging. Anyway, I believe it effectively addresses the main problem with the manufacturer's original design.