I think that it is easy to use in the circle cutter. Although it is optional here, I think that it is a bargain even if I buy it together with the main body. Since the main body is round type, it is a little problem that the axis is difficult to match.
I had the NT cutter 16 cm or less from the past and used it very conveniently, because the specification that the hole does not empty in the middle was this alone! Also, if you remove the metal fittings of the center you can cut out even round the center line by drilling holes like a compass, of course! But if you are looking for something over 16 cm you can not do things! What! The NT cutter attachment (from 16 cm to 40 cm) was less than 1000 yen, so I bought it immediately. As soon as you come, the set is easy! There is no problem in cutting comfort! Although it is not a product problem, if you cut while pushing paper objects such as glossy inkjet printing, the surface will be scratched. Of course it can be done neatly depending on how you do it, otherwise it is perfect.
Products that can easily cut 40 cm with a circle cutter are only items here in tools, stationery,. If it is thin, you can cut it. Also, it is a convenient thing that you can also make thick scribbles. I can not rely on the cutting edge by any means.