If anyone has a lathe with a peculiar thread and struggles to get faceplates to fit, Toolpost have a good selection of ISO type backplates which could be easily built into wooden faceplates (or anything else) - you've got the important bit, the thread. The holes are a bit big but that's not unsurmountable.
https://www.toolpost.co.uk/woodturn...tes-etc/versachuck/versachuck-base-components
https://www.toolpost.co.uk/woodturn...tes-etc/versachuck/versachuck-base-components