This is the adapter to mount the Oldham couplers to the Z axis of the Shappire plus or sp-5:
-We will need 2 printed adapters, I did it in ASA at 4/5 perimeters and gyroid 25%
-4 m3 brass inserts from ruttex on Amazon for each piece
-And mellow couplers: https://es.aliexpress.com/item/1005003817519669.html
The author marked this model as their own original creation.