Building the Lancelot Chastity Device

I’m just starting out in the world of chastity. Up to now, I’ve experimented with the BON4 and locked myself inside a Holy Trainer 2, which has been quite exciting! Since this hobby is getting expensive, I’ve decided to start crafting my own devices. By trade, I am a blacksmith, welder, and mechanical engineer. I’m nearly done constructing something akin to a Jailbird device; it was enjoyable tackling the technical challenges along the way. My next objective is to forge myself a chainmail contraption (having made historical chainmail replicas previously), drawing inspiration from the Lancelot model. That one looks fantastic but sits beyond my budget.

Does anyone have insights into how the Lancelot is constructed? I’ve got several ideas for attaching the chainmail to the ring, but what about the original design? Would someone mind sharing a photo?

I’m not running a business and don’t plan to start one later on. Apologies if my English isn’t perfect; it’s not my native tongue, as I am Dutch.