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Step 1: Making Components of Card Holder
Image 2: Make 2.
Step 2: Making the Card Holder
Image 1: Add yellow rods.
Image 2: Add the other parts and 9 gray connectors.
Image 3: Cover with the last part.
Step 3: Card Pusher
Image 1: Make 5 of these.
Image 2: Attach 6 gray connectors to a yellow rod.
Images 3-4: Attach the parts from the first image to the rod as shown.