you don’t have CAD

I do, but I’m an design engineer not a designer so my CAD skills are just basic. And I have better things to do with my time than learn CAD beyond the things I do now just to do what this tool does. My firm has designers that are better equipped for that kind of work, so there isn’t really a need.

pretty trivial function

How so?

you should know the procedure

And you should know how to suck me from behind.