"A, B ou C Level" - What is the diference? What is the most appropriate basis for cutting cards 230 g, 3 or 5 layers? A, B or C layer? I don't get it, they all seem to have the same specification. How long, on average, should I change this base cut, if I use only for cutting 230 cards? Blades wear out can be re-sharpened or are disposable? Quaiis are most suitable for cutting paper and cards with very detailed paper cuts of 180 to 230 g? Thank you Nilton

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