Corrugated Cardboard Cutter Dan Chan 7.5", Safety Box Cutter Knife [Non-Stick Coated Blade], Made in JAPAN, Yellow (DC-190F-1)

These work incredibly well! While they are awesome for opening everyday boxes, they are also stellar at tearing down big/heavyweight cardboard boxes, like the huge TV box I just had to dispose of. Easily cuts heavy cardboard up into whatever sized chunks you want. SO much better than a box cutter.

I was using a serrated steak knife to break down boxes because it is safer than a box knife and I think easier to use for that purpose. It worked very well and it was fast. Then I started doing research to find something even better. A lot of people like the Kershaw Leek which lists for over $100 and it is definitely not as safe as a steak knife. The I came across the Canary and I have always been impressed with the Japanese when it comes to knives (and many other products) .For $8 it was worth a shot. It exceeded my expectations and I just ordered another one to keep in my kitchen. It is faster and easier than the steak knife and very safe. It is thin and teflon coated so out slides in underneath a box flap and cuts the tape easily, then I plunge cut the tape the length of the box and make a turn when I get to the end without stopping to cut underneath the flap on one side, and because the knife is double sided I can move it back the other way and cut the tape on the other flap with out turning the knife around. This process is so fast and smooth it blows away the steak knife! If the box is really big then I cut the cardboard up in smaller pieces. I was surprised how well the Canary works for this, way better than expected. You can just pull it through the cardboard and it will cut it but it works better if you saw back and forth. Other reviews say it cuts cardboard like butter and that is a bit of an exaggeration but it does an excellent job.

I really do like this company, Canary, they make great products. The scissors are super sharp and stay that way for a long time. And this new cardboard box cutter is amazing. I have had it and used it for the past 3 months and it is like using a hot knife through butter, or cardboard in this case. The knife has these tiny little serrations which makes all the difference in cutting cardboard so easy. Since the pandemic, my wife and I have been ordering things online more often. So we get packages nearly 4-5 times a week. The amount of cardboard boxes starts to build up, and just breaking them down and folding them was not enough. They needed to be cut into the right size to fit inside the recycling bin. So I tried a regular knife, which worked but eventually the knife got dull and I had to sharpen it. Then I tried those utility knives, which then I started going through those replacement blades a lot. So then I found this, and it’s been perfect so far. No need to sharpen as it stays super sharp, but not dangerous to hands and other fleshy body parts that might get in the way, say my fat arm or foot. The tip is rounded so you can’t really stab yourself too bad and it also has a nice non-stick coating to keep the adhesive tape residue down as well. I also love the bright yellow handle which just brings joy as i cut up cardboard boxes with easy. And now all the boxes fit nicely into the recycling bin.

I bought this a year ago on a whim after hearing somebody mention how much they loved this thing for opening packages. And it is perfect for that, does it well, and takes up little room and is not very expensive. But I now live in a world where cardboard boxes just accumulate, seemingly every day, and I need to get them into the recycling without taking up much room. That's where this gizmo shines! After opening cardboard packages and cutting through all the tape, I just slice up the boxes on their four corner edges and end up with four flat pieces of cardboard. I stack em up flat so they take little room and into the recycling they go! I love it, no crushing or trying to fit the boxes together like a puzzle, just a pile of flat cardboard. Easy! I have only one criticism, and that is that the flimsy sheath has no rigidity and is not good for storing the cutter as is. I taped mine to the thin cardboard product packaging by wrapping it with cello-tape in a few places, and now it sits in my pencil cup on my desk, ready to go when needed, but hiding the edges from fingers and other things. The makers should sell it with a sturdier sheath. And I do regret it a bit that I did not buy two of them, one for the desk and one for the kitchen to store in the knife drawer. No real complaints, I love it when I find a great tool at a good price, and love it even more when I find myself using it all the time to make life easier.

Based on some of the other reviews, I expected this to cut through cardboard boxes as easily as a box cutter. It doesn’t. It seems that many of the other reviewers have not been very good about changing dull, razor blades in their box cutters and utility knives. That said, it does cut through boxes, but it requires a bit of back-and-forth motion as though it is a small saw rather than a sharp blade. This is great for cutting holes in boxes to turn them into temporary cat toys, but it makes breaking down a stack of boxes for recycling more work than a sharp razor blade would be. It is better at cutting open packages, slicing through packing tape with ease. Whatever you use this for, the handle is comfortable and it seems pretty well-made. If you think you need something like this and you are maybe drawn to not having to ever replace a blade or sharpen it or worry about keeping it in a sheath, then give it a shot—it’s affordable and handy.

These are one of the most innovative cardboard cutters I've ever owned. Cuts are accurate and precise and I don't have to worry about slicing off a finger like I would with the typical box cutter. The blade isn't sharp yet can cut through even the most heavy duty cardboard boxes. I used these to make a cat house from some large cardboard boxes. Cuts circles safely and quickly.

Surprisingly effective on cardboard. Cuts through corrugated like butter (almost)! Makes short work of knocking down boxes for recycle. Handle is comfortable, and serrated blade is safer (and quicker) than my knife. Great value.

Great little knife! I keep it by the front door where the empty boxes pile up and it gets used a lot. Excellent at cutting boxes but very unlikely to accidentally cut your hand.