I decided against due to the reports and just got replacement blades instead. I think I blunted my blade on mirri card as I was using it to etch the mirri. I haven't actually done the replacing yet. I have other cutting machines for the heavier card and tons of dies so accept that I keep my robo for 160 gsm and below. If I want thicker then I just cut more than one and glue/decoupage together. I wasn't prepared to risk damaging it. xx Flora