lens cover customizable

This is a fully customizable lens cap.

I designed this object for my projector few days ago. When I saw this https://www.thingiverse.com/thing:3899398 , I have decided to send my cap too

The special design is: if you forget to uncover the len, when you turn on the projector, you see on the wall a text to remember lens cap :-)

You can easily modify diameter changing only the variable dL, if you want to change the text you need to change it into the middle of code