New Sunstar Kadomaru Pro, Corner Cutter (S4765036) (Kadomaru Pro) with Authentic Hologram US, UK, EU Only

I recently purchased the Paper Corner Cutter, and I must say, I’m quite pleased with the results. This handy tool provides a simple yet effective way to give papers and cards a perfect finish, adding a professional touch to my projects.Using the corner rounder cutter is a breeze. I just insert the corner of my desired material into the back of the body and press the handle down to cut the corner. The process is smooth and effortless, and the end result is consistently neat and tidy corners.What I appreciate most about this cutter is its efficiency and ease of use. It works like a punch, delivering clean cuts with minimal effort. The compact design also makes it easy to store and transport, making it a convenient addition to my crafting supplies.Additionally, knowing that this corner cutter comes from a reputable Japanese goods and stationary brand gives me confidence in its quality and reliability. It’s evident that attention to detail has been paid to its design and functionality.Overall, I’m very satisfied with the Paper Corner Cutter. It’s a simple yet effective tool that has helped me achieve professional-looking results in my projects. If you’re in need of a corner rounding solution for your papers and cards, I highly recommend giving this cutter a try.

(I mean, unless you’re trying to round off a steel latch plate or something. Get an angle grinder.)Things to know:-There are multiple moving parts-These parts are probably not in perfect adjustment right out of the box.-You can make the adjustments necessary to do your project, using a Phillips screwdriver.I sympathize with those who had frustrations right out of the box with this item. For me, the blade assembly got stuck in the down position while chomping index cards (one at a time). But I fixed it, and the following description may help somebody out there.First, it’s worth bearing in mind that this product is made in Japan (not elsewhere in Asia), so you should expect the design and manufacturing to be very good. And it’s not a solid-state electronic device so you should expect to be able to disassemble and service it to some degree.Aside: If you just want nice-looking stationery without having to adjust, maintain, or even understand your tool, then give your project to the kid at the copy center. But if you are like me and enjoy that kind of thing, or if you just really want to cut corners, then it’s best not to, um…cut corners.Moving Parts: This product cuts a radiused corner in sheet material (usually paper or card stock) as the lever pushes the curved blade down across the edge of a metal plate, rounded with a matching curve, that support the material horizontally.The user operates the cutter via a lever that pivots on one side and presses down on the blade housing in the center (For you kids at home, that’s called a Class 2 lever, like a wheelbarrow). Maybe there is a video out there with a hand model who makes it look easy to use one finger on the tip of the lever, or squeeze it between your thumb and finger, but don’t bother. Use a solid work surface (wooden table, tile floor, concrete driveway, deck of a ship, whatever is convenient) and push straight down on the center, using your palm. This should give you the best chance of a clean cut the first time. The thicker the material, the more you must put your weight into it.Another Aside: The horizontal metal thing that opposes the vertical blade during the cut, is what I’m calling the “shearing plate”, because that is what we’re adjusting. The real technical term is probably in Japanese, so you’re welcome. I like to be accurate enough so you know what I’m talking about, but I promise not to get ridiculous about it and string a bunch of terms together for the sake of precision like they would do in German (“Ent now, ze tenshun iss adjustet bei tyrning ze Shearingplateassemblybasehousingsecurefasteningscrew…”)The shearing plate, fastened to a small movable plastic block, is meant to slide outward a bit with each cut. When the lever resets, the shearing plate assembly returns toward the center via a spring. You can’t see these springs without disassembling the product, but you can adjust the resistance to the spring tension via one of three screws underneath (one for each radius size).If the screw is totally snug and the shearing plate assembly does not move at all, the blade housing is likely to get stuck in the down position. If the screw is too loose, there will be enough play that the shearing plate assembly to move too soon or cant too much, resulting in either a ragged cut or no cut at all. A loose shearing plate will also fail to reset flush with the base, which narrows the cutting slot enough that it may not accept another sheet after the first cut.The correct adjustment will vary according to the material. For light thin cutting, like one sheet of printer paper, the screws should be “almost” snug. Wear eye protection at all times. To avoid stripping the threads in the plastic base, turn the screw by holding the screwdriver by the SHANK (not the handle) between your thumb and fingers, and turn clockwise until your finger grip fails and you would have to change to gripping the handle to turn any further. That is snug (or “finger tight”). Then back off by about ¼ to ½ turn. For thicker cuts, back the screw off a little more. Test and see. Again, if it’s too loose, the cut will fail in thick material, and a second sheet may bind on the way in. I got this to work for several sheets of paper, up to six stacked index cards, and two layers of a plastic drawer liner. Do some tests first to get the adjustment right, then push as hard as necessary. If your full body weight pressed over a stiff arm is not sufficient to round the corner off your material, then either it is too thick for this product to cut effectively, or you are severely malnourished. Break for a sandwich and try again later, or try the angle grinder.

Long lasting sharp blades and easy to use. Bought almost a year ago, and it's still going strong. I've rounded the corner on over 500 business cards and 100's of item mounting cards made from plain card stock. Only downside is that I have to do one at a time; it can't handle two cards at once and make a clean cut. But for the savings over paying for pre-rounded business cards, this punch is perfect and well worth the money.

the best corner cutter! I usually don’t leave reviews but this is the best corner cutter. I’ve packed mine away during move & was lost putting picture albums together. Had to reorder one. It works so good on like sticker paper etc. Blades are amazing. (no association with product).

this is the only corner rounder i’ve found that actually works well!! i use these to punch laminated products! idk if it was just mine but only my large size works. however, it’s definitely something i recommend and will repurchase. it’s easy to use and has lasted several hundred orders with my etsy shop! it’s nice and compact so it doesn’t take up much room!

I make lots of greeting cards and dabble in some book binding, I have lots of corner cutters from other brands and they simply can not compare. If you only buy one Corner Cutter, this is a sound investment.This is also lovely if you have business cards you would like to round the corners on ~ nice for modifying existing stationary or creating your own.Pros:Very sharp (but safe!) cutting implement makes for very clean cutsSatisfying CROUNCH :)Easy to use and aligns neatly for a very professional look, no fussExcellent Price!Arrived Promptly and in Good ConditionCons:Only thing I can say that is negative is this is not for any paper thicker than cardstock, and only one layer at a time. The quality is excellent, just know that it will not be good for multiple layers of thickpaper.

I am a teacher and I purchased this so that I could round the corners of all of my laminated items. It works like a dream. Easy to use and a quick way to get the same result over and over. I've used it on construction paper, copy paper, laminated items and photos so far and it cuts the same for all of them. I would recommend this item.

I love this thing. I have spent years rounding corners of laminated stuff with scissors, until I got this. Three corner sizes and the cutters are on springs so if you put something in that is too thick, it will not cut. You cannot force it and damage it. It cuts 5ml laminations with ease.