There was a serious lack of Leopard 1s here on Thingiverse for Team Yankee so I put one together using multiple sources, did some resizing for 1:100, and came up with this. I'm sure there will be some tank experts out there who will note some flaws but this was the best I could do and it works for a game. See "Print Settings" for best infill. Please upload any pictures if you make it and be sure to keep uploading free stuff to Thingiverse!
5/19 Update: Added skirts for those that asked.
Tracks - 100% infill
Turret - 50% infill
Hull - 20% infill
Skirts - 100% infill