Spiky Stim Keychain

I was asked to make a version of my spiky stim tool (here) that could be attached to a keyring. I bought a pack of Screw Eyes from amazon (here) and used the largest ones from the pack. These were described as 12*5mm. This isn't very clear but seems to be a common way to describe them. It means that they are 12mm long overall and 5mm wide. In my case they were 1.2mm thick wire. I have added a picture to help show what I used. The uploaded profile is 100% scale and is sized for the above eye screws.100% scale means that it is 70mm high, 30mm wide in the middle and narrows to 22mm at the ends. If you want to scale it differently or use different screw eyes then the customise button can be used. This allows changes to the scale%, and the dimensions for the features to allow the eye screws to screw in. Some experimentation will be needed for the eye screw dimensions as small diameter holes always print undersized and the eye screw heads are not perfectly round etc. Some clearance will