What's the working principle of Fabric GSM Cutter?

The working principle of Fabric GSM Cutter is cutted by pressure. There is a long handle for operator to cut the fabric easily. 

Regarding the cutting blade, there is no need to replace the balde, generally speaking, one cutting blade could be used 4-5 years. What's more, the blade installation is very complicated.If the blade is not installed  very well,it will influence the accurate size of fabric sample,finally it will influence the GSM.

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