The Heavy Duty Circle Hole Punch from EK Success will punch through tougher mediums including cardstock, chipboard, light weight metal,... Full Description & Details.
I saw some good reviews of this item and thought it might be a nice alternative to a larger punching system for heavy duty purposes. Space, for me, is at a premium. However, no sooner did I get it out of the packaging than I noticed a huge weakness that actually makes me regret getting it. It punches less than 1/2 inch away from the edge. Plus, one of the first times I used it on something more challenging than mere paper, I managed to whack my pinky finger with the handle when I released it from the lock. (No doubt my extreme clutziness was more to blame for that than the product itself.) On the positive side, it is compact, solidly constructed and does punch smoothly through chipboard at least.