Need replacement key for a casio keyboard

I don’t know if this is the place for this but, I recently got a casio vl-tone with the intention of circuit bending it, I took it apart and lost one of the black keys. I was hoping someone could whip me up a quick .stl of one so I could run down to the uni and print it.

Here is a shitty paint drawing of what need.

I spent all night yesterday trying to figure out how to make this in a bunch of different modeling programs and couldn’t for the life of me figure it out.

Followed your paint drawing specifications and modeled what you need. I hope it works fine for you, never used that format (STL) before.

Awesome! Thank you so much, I’ll print it as soon as the lab opens.