I'm waiting for aluminium enclosures -they will take a long time to ship from aliexpress.
So I made this to print in PLA - and possibly spray paint with some nickel shielding (https://uk.rs-online.com/web/p/shielding-aerosols/7259987)
https://www.printables.com/model/1176253-funbox-125b-enclosure
Maybe it can be of use to someone.