The perforelieuse is solid, and allows to perforate 6-7 pages effortlessly and plastic cover and support. The sheets together, no worries, all the rings are well taken the first blow when spreading. The only complaint, if it is necessary to make one, is that the user guide is in English. But the system is simple and common to perforelieuse: We put the sheets in the slot is pressed, the sheets are perforated, the sheets are pre-assembled by the rods. Then placed the comb which is removed by pushing the joystick, and there is more than to assemble perforated sheets in the comb. I assembled in packs of 10-15 on the problem without comb, and the largest assemblage made is 297 sheets and carefree.
I use it for various purposes, including to assemble the device manuals. Indeed, manufacturers tend to put excerpts instruction with purchased equipment, and complete download on the internet (I had the case for the hot water tank, helmet, tv ...) Small detail, this perforelieuse is also planned to drill 4 holes if we want to put the sheets in a workbook (put the leaves in the back for this purpose).
Anyway, 5 stars for a device I finally used more often than I imagined.
