This is a combination of the Assemble after Print - Cascade Card Wallet Remix by @815design, and the Cascade card wallet - 6 Card Remix by @NilsKal, both of which are remixes of the Cascade card wallet by @hugo
See original projects for printing tips (print the shell vertically in PETG, print lever horizontally on edge with supports), assemble by press fit.
The author remixed this model.
No changes were made to the retention button