Only when you start to use the cutter properly fall to glaring weaknesses. Indeed, it is almost impossible to cut paper to an exact length. This is because that the centimeter scale is applied only at the very bottom of the device, but there is no more scale or guides, that sometimes applying the sheet down correctly, is still long can not be guaranteed that it further up still exactly lies with the same level. So you cut down perhaps 10 cm wide, but perhaps above 9.95 cm or 10.05 cm wide. The other labels are not really thought through. What is the point, for example, that a mark is applied for 10x15cm only in portrait mode, but not in landscape mode? So I can create a template that I want to cut to 10x15cm, although cut exactly 10cm wide, but when I then turn to cut the 15cm, the mark for me is missing. Strange that this bizarre blemish other reviewers who look forward to the "exact registration marks" is not noticed, because it means that these registration marks - no matter how accurately they may be, are completely useless. This applies to all these marks, also for DIN marks. Here the product designers may have thought barely more than 60 seconds on the label of the tailor.
The contact pressure of the paper itself is very good, but the lack of reasonable marks and the lack of a clean leading edge at the bottom (the edge is made of black plastic, not metal, and I find it very hard to find a piece of paper there absolutely straighten) make it still hard to cut really accurate.
The lever blade cuts relatively well, but where it could be even sharper quite. The cut is a bit "rough". For normal use this should be enough, but one of my most important applications is the cutting of high quality origami paper, where the claims are slightly higher. At least at the beginning, leaving the lever blade dark marks on the cut edge, which means you should use the unit first several times with paper to clean the knife so.
The roller blade works pretty well, although it is still difficult to accurately cut because you have no pressing device for roller blades, ie the paper may slip during cutting. I am thrilled by derm absolutely clean crinkle cut (even if there are for me relatively few applications) and is also very beautiful perforation.
I'll probably use the equipment for tasks where accuracy is not wholly so important. I might even try to apply yourself guides. If I do not succeed, then the device meets my needs for cutting origami paper not because I here the dimensions 100% exactly must comply and also because I'm not sure if I like the not perfectly clean cut edge. But if someone has only opportunity tasks for this device, which does not matter half a millimeter, I would recommend this product definitely.
Addendum: I now noticed that the dimension is apparently shifted the slitter to 1mm. That is, if, for example applying a sheet of paper at 9cm, it is 9,1cm wide cut.