They are thicker than normal cards, but it isn't difficult to shuffle them.
Step 1: Materials
-2 playing card packs.
- A paper punch
Step 2: Making the Holes
I made the holes by the sides of the cards: from one to six by the left side (1-6) and, if needed, from one to six by the right one (7-12). For the king I made another hole near the top side, between the two lines of holes I already made.
Don't make any holes through the jokers.
Step 3: Marking the Suit
1 corner pierced: Hearts
2 corners pierced: Diamonds
3 corners pierced: Spades
4 corners pierced: Clubs
Be sure to make the holes clearly by the corners, so no one gets confused between this ones and the ones that show the number of the card.
Step 4: Making the Holes Invisible
I you want to use this card pack to play both blind an non-blind people you need to make the holes invisible to anyone but the holder.
To achieve this, just paste another card (of the same value of the first one) behind each of your pierced cards.
Now you have your blind man's card pack ready!