I scanned and remodelled the HuCard cover for the Duo-R (also fits the Duo-RX),
The model contains no flat surfaces to FDM print on properly, so this is best suited for Resin printing instead. Or you would need lots of weird custom support (maybe organic/tree supports are best suited, I didn't try myself though).
I'd love to see any print done of these, so please share your makes!
The author marked this model as their own original creation.