Mophorn Paper Cutter 12Inch A4 Commercial Heavy Duty Paper Cutter 300 Sheets 45HRC Hardness Stack Cutter Metal Base Desktop Stack Cutter for Home Office (A4)

Arrived today, and worked great almost immediately out of the box. I cut the binding off of a 150 page book first, and then cut the binding off of a 600 page text book in one shot, smooth, no problems (!). I then scanned both of these books using a Fujitsu ScanSnap iX500 scanner, both scanned perfectly in a single pass.PROS:- Built very solid (40 lb shipping weight!)- Does a beautiful job cutting thick books- Minimal assembly needed, except the gate crank (see below). works almost straight out of the boxCONS:- Comes with no instructionsCAVEATS / NOTES:- The gate crank comes pre-installed deliberately backwards for shipping purposes. Using the supplied hex key, you must removed this crank, and re-install it the other way around before the paper cutter can be used. There are no instructions or labels even hinting at this necessary step.- Getting a clean straight cut seems to be dependent on sufficient gate pressure, but you probably should not over-tighten the gate, because anything can break with enough force. So, it seems that the gate should be tightened as much as reasonable one-handed, but do not just wail on the gate crank with both hands at the same time.- After cutting the binding off of a book, it pays to separate the pages one-by-one before scanning, as you will probably find a page here and there still stuck together due to small variations in binding adhesive depth.- Be aware that with the 40lb shipping weight, returning this product might not be cheap. I didn't examine the return policy, but the product was not an Amazon Prime product, so it might not be a free return.Summary: 5 stars, excellent buy, excellent price, would definitely buy again.-pete

Arrived damaged. Tried to reach out for support but can’t find contact info.

I was a little hesitant to order this, since there were some negative comments about it, but it works much more easily than I expected. There's a YouTube video of someone using one of these (it seems to be this brand and model) and the user struggles mightily with it, so we expected to have to apply much more force to cut through a stack of paper, but that didn't turn out to be the case.Ours arrived with a slightly cracked safety shield, but it's only a cosmetic issue. The shield is fully functional.This is a great bargain compared to other paper cutters of this size and capacity.Update: I managed to break one of its bearings by abusing it. Bouncing with my full weight on the handle to cut through an oddly tough stack of paper is just a bit more than it was designed for. (Paper varies a great deal in its resistance to being cut. Only one large stack of over one thousand stacks I've cut gave me this much trouble. I should have divided it into smaller stacks.) Fortunately, Amazon carries the bearing ( Koyo Torrington NK12/12A Needle Roller Bearing, Outer Ring and Roller, Open, Oil Hole, Steel Cage, Metric, 12mm ID, 19mm OD, 12mm Width, 30000rpm Maximum Rotational Speed ) and with basic hand tools it's easy enough to disassemble the paper cutter and replace the bearing.In the question and answer section below I provided an answer that amounts to a set of operating instructions for the paper cutter. Some of you may benefit from those instructions, so I'll repeat them here:We still believe this is a great paper cutter at a great price. We've made more than one thousand cuts with it, of stacks of paper up to 200 sheets thick. We've sharpened the blade once.Operating the paper cutter:* Rotate the paper clamp crank counter-clockwise several turns to raise the paper clamp. (The paper clamp crank is the crank near the end of the paper cutter blade opposite the long lever arm.)* Raise the long lever arm until it's vertical. It may be stiff if your paper cutter is new. You'll hear the safety release click when the lever reaches the fully vertical position.* Insert a stack of paper and position it approximately.* Rotate the clamp crank clockwise until the clamp touches the top of the paper. Make final adjustments to the position of the paper, then rotate the crank until the paper is firmly clamped.* Hold the small safety release lever down as you begin to move the long lever arm. After the end of the arm has moved a few inches you may release the safety lever.* Place both hands on the handgrip at the end of the long lever arm and fully lower the arm. (You may need both hands to comfortably apply sufficient force to cut a large stack of paper. This is also a good safety habit.)* Raise the arm to the fully upright position. (For safety, it's best to raise the arm fully, so that the safety latch engages.)* Rotate the clamp crank counter-clockwise to release the paper. Koyo Torrington NK12/12A Needle Roller Bearing, Outer Ring and Roller, Open, Oil Hole, Steel Cage, Metric, 12mm ID, 19mm OD, 12mm Width, 30000rpm Maximum Rotational Speed

First let me say this cutter is the 858 "Perfect/Stack Brand" S12 paper cutter that is sold else where. For some reason the branding that indicates the name isn't present but clearly the cutter is the same and even the flyer/instructions sheet that comes with it states the name as "Perfect A4 Stack Cutter" (A4 being letter sized). At first I thought it would be cheaper knock-off. But after handling it for a while I'm more certain that this was a unbranded over-produced run or possibly a quality control reject that kept it from being sold as a Perfect/Stack Brand, though it's possible that this is a return/remanufactured unit.First my biggest concern and the biggest bug bear. Alignment of the back guide fence. And just as I had suspected my unit was misaligned. I had accounted for this and knew I was probably going to have to do some minor modifications to realign it. Turns out all it takes is a 10mm wrench and some patience. If you turn the unit over on its side you can see the bolts that hold the guide fence. By loosening them and adjusting the fence ever so slightly you should be able to realign it. Note that its never going to be completely straight because the act of it being a manual loading cutter, but you can with time and patience you can get it to near perfect alignment that can satisfy your needs.Just as other people had stated there is a crap ton of grease EVERYWHERE. One of the first things you should do is bust out the paper towels and start cleaning it up. It's in every nook and cranny. I realize that the purpose of the grease is so that when in storage it doesn't rust, but the amount I removed was a bit in excess.I also found the draw of cutter handle seemed a bit stiff than was necessary. I'm a big guy but I can see if a smaller person could possibly having problems pulling down the handle. But for those that like a lighter draw you can open the side panel after removing the black thumb screws(2 on top, 2 on bottom) I was able to find the over tightened bolts. You don't want to over tightened and you don't want to under tighten the bolt because it could lead to sloppy cutting. Also the handle wasn't assembled when I got it out of the box. It just slides on with no fasteners and if needed It is possible to find a longer pipe to use as a handle to give the user move leverage allowing a easier draw. Though make certain that the table and cutter unit doesn't tip and fall overNext gripe Is the blade itself. As I was examining the blade and noticed that it wasn't super sharp like I was expecting. It was fairly dull, I'm not sure if this was a wore blade or it wasn't finely sharpened. To be honest I was expecting it slice my finger off since I use a cutter at work and the blade on that one was razor sharp. But not to worry as even with the state of the blade "as is" it was enough to cut a phone book in half with a clean and smooth cut. If you wanted a razor sharp edge you could take it off and have it sharpened either yourself or take it to a local shop.Below that blade is the red cutting pad. To remove it you need to loosen the thumb screws on the bottom of the unit and left it out. Only problem is this pad is hard to pull out without a screw driver to pry it out. Please watch your fingers when removing the pad. Small modifications would make it easier to pull out and turn the pad. Also after cutting a bit (~250 cuts) the cutting pad finally needed to be rolled over. Though I probably did put too much strength in my cuts, which resorted in wearing the pad more than necessary. But since the pad can be rolled over a total of 8 times (~1000-3000 cuts maybe more) I don't find it to be a negative thing.The overall appearance is rather nice. It definitely looks like a expensive piece of industrial equipment. In the picture you see nickle plated parts, on the one I received it was painted gray. The surface was painted with a high gloss, now what means is it's going to be a finger smudge magnet. This was done so the paper your working on slides easily across the surface, but for some this could be an annoyance that I feel should be mentioned. The surface itself isn't perfectly smooth. It does have a few imperfections but none that clearly stands out and can only be seen if your get right down and examine it with a magnifying glass. Finally this dang thing is heavy. At 40 pounds this thing isn't something you can move around much, so make some room for it. It is fairly large and for some with limited work space it's going to be a pain to pull out and put away again.Below I have found some videos to help with maintenance and setup of your unit. Again the one shown is in fact the same thing. Look on youtube since amazon doesnt allow outside links.9NHRwyzaByYGv4hWjnMOH46Sf0CYtFsDIIf your looking for parts it actually should be fairly easy since majority of the time your going to be looking for "Perfect/Stack Brand" S12 model. If it can work for S12 model it should be compatible with this unit.

UPDATE: Do yourself a favor and add toothed washers to the nuts holding the vertical guide. Without them, it has a tendency to slip backwards, throwing off the accuracy of the cut.This cutter is very sturdy, it is at the limit of what I can lift. The instruction manual appears to be the product of multiple generations of photocopying, so poor quality at times you can't make out what you're supposed to see. They also list parts that don't appear on the actual unit, such as "6. Paper back support lock knob."The 'magnetic blade cather (sic)' came without any magnets. Upon assembly, the knife blade on mine was not properly vertical, I am looking for a way to adjust it - there are no instructions included for that.That said, for a cheaper product it cuts easily through large text blocks, which Is what I bought it for. It's so heavy that sending it back would be a chore, so I am keeping it in the hope that I can adjust the blade so it cuts properly.Warning: Some of the descriptions in the Questions section on this page seem to be for a completely different unit. Read carefully.UPDATE: Months later I still can’t get an accurate square cut out of this thing. Can’t recommend it.