Step 1: Step 1 - Materials
1 - Pen/marker
1 - Pair of Scissors
1 - Ruler or straightedge
1 - Bottle of krazy/nail glue (You could use tape or regular glue as well)
Approx 20 - Playing cards
(Not In The First Picture) I found later in the process of making the case that a razor blade or exacto knife can be very helpful.
Step 2: Step 2 - Thickness and Card Quatity
The stack i used was 24 cards thick. i started with a large stack of cards and pushed my flash drive through to get the thickness of it in card lengths. Mine was 14 cards thick. I then added 5 additional cards on either side for structural support that WON"T be cut for a usb opening.
Step 3: Step 3 - Setting up the Front and Back
Repeat that process for the back 5 cards.
Step 4: Step 4 - Cutting the Cards
After cutting the middle cards (No more than 2 cards at a time) You must get out your adhesive and fasten them together, a drop in each corner should do nicely.