Locking Carcassonne tiles

I loved the tile set but the tiles can easily shift around and change board placement - especially when people add tiles. This adds some locking tabs to the sides to prevent the tiles from moving around.

Thanks to Martin for the original tiles. They really are fantastic.

Notes: The tiles in the picture were cut from 3mm MDF. Budget around 3-4 hours for this to cut. It's not quick.

EDIT: Jordan Wharton pointed out that I still had some overlapping lines that were causing double cuts. I've uploaded a new SVG that should clean all those out.