I like the vintage design of the Casio B640so I wanted the same thing on F91Wyou may wonder why on earth would anyone use put the old module 593 to replace a more advanced model like module 3294well, because i can ;)

and is fun to build

.STEP files are also included!3D printing settings

no support0.15mm or lower layer height (smaller the better)A 0.2mm nozzle recommend (or use resin printer )