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A closeup of the packaging:
They're rated to 2.6mm of aluminium wire, 1.2mm of copper wire, 2.0mm² of stranded copper wire and 3.0mm of plastic. I got them to cut plastic mostly of 1.75mm in diameter with an expected max of 3.0mm diameter, so the FC-120 fits my needs nicely. Country of origin down the bottom:
The low weight of 45gm is welcome, particulary when using it for extended periods - I had the unusual (for me) task of cutting scores of plastic parts out of sprues recently and using both this flush cutter and the KBN-150 back to back left me strongly preferring the smaller, lighter tool for that particular task. The lightweight spring in the FC-120 was just the right weight for the task at hand, springing the jaws open easily but not providing much resistance when a cut is made.
The pliers out of the box:
Tsunoda state that they're made out of alloy steel and that it has had an oxide-free heat treatment process applied. The edge is hardened via high-frequency induction.
Speaking of the edge, Tsunoda claim a hardness of 46-54HRC. To put that into perspective, the aforementioned KBN-150 is rated to 56-62HRC.
The grips are molded elastomer and are quite comfortable in use! Slightly soft and quite grippy.
In the above pic you can also make out the spring coming out from under the grip. I'll get a better pic showing how that works.
I have used these cutters daily for about three months and have found them to be very good. I'm currently printing about 300 hours a month with a 3D printer with frequent filament colour changes (and cuts) during each print, and it's cutting just as cleanly now as when I started. The jaws don't align absolutely perfectly - you can see light through the lower half if you close them in front of a light source - but that doesn't appear to affect them in practice. The cuts are nice and sharp and it's easy to get either a straight flush cut or a pointed tip on the filament end, whichever you prefer.
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