| If you're planning on working the cut it into a shuffle you should use a stack size of 8,12,16,20,etc. so you can easily cut off even stacks. Use a stack size that you're comforable shuffling... I like to shuffle stacks of 6, even though I can shuffle larger stacks... it's just more comfortable. ANYWAY........
Here's how I do it:
Start w/ a stack of 12 chips. Reach down from the top of the stack and pick off 3 chips using your fingers and thumb. (I actually just use my ring finger and thumb, but you may be more comfortable using other fingers as well. Just try to keep your pinky free.) Once they have cleared the stack, use your thumb to push the chips into your pinky and adjust your grip. The goal is to hold the chips w/ your pinky, ring and/or middle finger -- with your index finger and thumb freed. Then, quickly pick off 3 more chips using your index finger and thumb and place (or toss) those on top of the first 3 chips.
You can then set the new stack anywhere... drop it next to the original and work it into a shuffle, or set it back on top and cut it again. It's fun for the whole family.  | 
