Hi Fizzy ,
(1) Make wheels as welded assemblies .
Big lump for the middle , tube for the rim and flat bar or round bar spokes .
(2) CNC from solid .
(3) Flame cut basic spider and trim by milling or windy grinder .
(4) Use non-standard wheels .
Early engines had a whole range of different wheel designs before the later simple spoked type was arrived at as normal .
Some types :
Plate wheels – literal – made of boiler plate with separate tyres . Could be simple but quite often in several layers of plate with divers holes and cutouts .
Cart wheel – wooden centres . Solid or spoked . Tufnol and glew ?
Channel , T , H and round spokes forge welded to tyre and centre piece .
Many more !
Regards ,
MikeW