I love that the whole setup is pluggable. Works great for me, but I've noticed that even with 5 sides, some of the holes aren't fully punched. I can't imagine the listed 28 blades running smoothly at the same time. My paper is heavier - 60 - so it might be able to do 15 sheets with 20 weights. This is not a problem for me as I am simply reducing the number of sheets I punch at a time and will never make that many sheets. But if you really expect or need to punch 28 sheets at a time, you can buy a higher-end machine.
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