I am a paper artist and require thousands of strips of paper for my art, so my opinion may differ from most using this as my end application is different. I have 5 different paper cutters all guillotine style and this is my first stack cutter. Can i say love????Generally i cut paper sheets one at a time, and in general i will spend a full day cutting to get 400 strips. So from my perspective, being able to accurately cut 50 strips at one time is a dream come true. I have had the thing for about 3 hours now and have cut over 7,000 strips of paper. That alone has saved me 137 hours of work! (Meaning the thing has already paid for itself.)Now for some tips, as i have read so many mixed reviews, and because of that it took me 6 months to decide to purchase this because of what I read in other reviews.ACCURACY:Your results are only going to be as good as your time put in. This is true with any tool or any piece of equipment. Take your time. If you are cutting multiple things in succession, pay VERY CLOSE ATTENTION to where you line your paper up on the board, and line it up exactly the same each time. The width of measurement line on any paper cutter are quite wide and if you line up to the outer edge of the line for one cut, the center of the line for the next cut and the inner edge of the line for the third cut, every single one is going to be sized differently. OCD comes in very handy here. Line it up on the exact same edge every time and you will have accurate results.PRESSUREOn the paper clamp pressure is so very important, when you think you have it tight enough, tighten it a little more. If you are concerned about the clamp leaving marks, add a cushion between the clamp and your paper. This could be as simple as a extra sheet or two of scrap paper or you could get some thin 2mm EVA foam and affix a strip of it to the metal clamp to act as a soft buffer between the metal and your paper. Think of it this way, its super hard to use a pair of scussors to cut 2 sheets of paper at once, because much paper has a slick texture that has a tendancy to want to slide. So getting plenty of pressure on a stack of multiple sheets of paper is absolutely necessary to keep everything in place while you cut.Use your left hand to hold the stack in position with adequate pressure then begin tightening the clamp to bring it to the surface, then use both hands to apply the final pressure.Dont be scared of it:It requires a strong swift single movement to bring the blade down completely. If you are gingerly about it, you risk causing errors, or having the lower edge not cut well (or possibly not cut at all). Use firm force to bring it down. Unlike a traditional guillotine cutter, this doesnt cut from top to bottom edge, the blade moves straight down from top to bottom of stack. The pressure dynamic is completely different.Things i suggest to modify the equipment itself:Remove the paper guide from the body of the machine, i attempted using it, and like every other paper