The aluminum 3 mm thick board was cut roundly. It was easier to trace a circle than a normal thread saw, and it was able to cut beautifully. Sharpness is slightly inferior to ordinary thread saw, but it is satisfactory.
This product is considered equivalent to freeway coping saw of discontinued item. I do not know whether the blade standards are the same, but I will recommend it if I buy a new one. As a good point, you can cut it freely as described. There is more durability of Noko than imagined, so it can be quite impossible. As a bad point, it will take experience until you can cut straight, say 10 cm if you cut it down, then you better buy a replacement blade if you cut the metal plate. It became difficult to use after cutting 30 cm. If you cut wood, replacement blades are not necessary. As a precaution, it seems that the blade is oriented. Please check and install it.