FLIP IT OVER before printing (was my CAD artefact, sorry)
Printed in basic PLA and stored in one of my tool drawers. Very convenient.
I've included the FreeCad file if you'd like to make modifications.
The FreeCad file is “Spreadsheet Driven” so you can tweak the stone width, length, and even number of stones to BYO
The author marked this model as their own original creation.