I love the Leopold FC660 platform (both MX and Topre) and I’m starting a thread here to track upcoming projects related to this board.
Let me know if there is a more appropriate tag or established topic for this, and if I can add more information, tag the creator, etc.
Here are the following potential products I’ve seen for the FC660:
Topre
https://imgur.com/9AKINjA
PNPKey Ingot66: a brass case for the FC660C (GH thread)
SZ660C/ALTCTRL: Alt Controller with companion MXALPS PCB/Plate for Leopold FC660C (IC on r/mm)
MX
@r4bbl3d4bbl3’s 660C-X: MX Compatible PCB for FC660C aftermarket case (IC on Keebtalk)