Review on Overlock Necchi 4455D by Gabriela Nowacka ᠌

This is my first overlock, although I had experience. Everything suits me! But they stopped cutting knives on the first product. I turned to the master, he said everything was fine, only the knives were dull. Very strange) he sharpened the knives, at first everything worked, but then again the fabric began to chew, and not cut off. What to do? Buy new knives? That's not the point! After all, I did not work for them at all.