Great knife, worked great on all types of fabrics I have used in my sewing projects. I often use heavier fabrics for kitchen sewing projects and am good at cutting them too. Haven't tried cutting backing but have used it on some lighter upholstery fabrics and it worked flawlessly. I haven't changed the blade yet but I have used other cutters from this brand and they were easy to change. Very satisfied, the rotary cutter is easy to use.
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