KOZYLAND Glass Bottle Cutter, Bottle Cutter & Glass Cutter Kit, Glass Cutting Tool DIY Kit for Cutting Wine, Beer Bottle or Jars to Craft Glasses for Round Bottle with Safety Gloves & All Accessories

I make a LOT of things, but I have never cut glass nor used any type of cutting apparatus. I must admit I was a little intimidated. I tried a couple of times using some old mason jars, but had no success. Then...I got on YouTube. First of all, I realized a heat gun might be a handy tool to have; I got back on good old Amazon and found a Wagner heat gun for under $20. Next, I realized that although the limited directions which came with the cutter indicate "cold" water, what is really needed is ICE water; cold is not going to get it. In the demonstration I watched, the guy used a plastic water pitcher filled with ice water instead of the shallow tray pictured in the cutter instructions. More than anything else, the video stressed the importance of a clean score on the bottles, ending right where the first cut began. So today, it was do or die for me; either get this right or give it away. I must say as I was more than a little discouraged after my previous attempts. I practiced on another mason jar before I began cutting on bottled; it went so easily and so perfectly with the proper scoring, heat gun and pitcher of ice water. I didn't even have to use the O-rings. Then I went on to the "real deal", the bottles. Could not believe how easily they went. One of the great features about this bottle cutter is that is has strong rubber grips on the bottom, so the unit stays put as you do your cutting/scoring. I am attaching a picture of what I did in less than 15 minutes. Big difference from my first several attempts! Bottom line is this is a nifty craft item and it will be fun to come up with stuff to make. Right now I am concentrating on using bottles as bases for wind-chimes. Yes, it takes a bit of practice to get those cuts/scores just right, but it works MUCH more easily with a heat gun and ICE cold water in a tall pitcher to make the bottles separate cleanly and quickly. UPDATE FOR NEWBIES: Rely less on the heat gun and more on the ice water. I have found that a few swipes around the score on the bottle, followed by more time in the ice water. You might have to repeat a few times, but slow and steady (with more time in ice water) does the job - without cracking.

Follow the directions. Now, for what the directions don't tell you: the O-rings are there to keep the boiling water and cold water focused on the score line. If your bottle has a raised pattern that allows water under the O-rings or if you spill the water outside of the O-rings the bottles will not fracture along the score line, leaving you with very jagged edges. If you keep the water within the O-rings, the bottles will fracture easily and cleanly. Beyond that, the product is well built and functions as advertized.

So I was initially cursing this tool, and was about to write a review that it didn’t work, pack it up, and return... But I gave it another try, and I’m very glad I did. The key for me was that I wasn’t using hot enough water, so make sure you’re not just using hot sink water- it needs to be truly boiling from the stove. I didn’t have a helper, so I just held the bottles barely above the water in the pot, and used a measuring cup to spoon the water onto the line. I usually only had to go hot-cold-hot before the pieces just popped apart on their own. Second, I started out scoring the crap out of the bottles, and going around and around. You truly only need to go around the bottle one single time. As long as there isn’t a break in the line, less is more. I was getting so mad and frustrated trying to figure this out, so if you’re having issues, keep the faith! Once you have it down, it’s dumb easy Did give this 4 stars instead of 5 because the included instructions are a bit brief & unhelpful, and there are a fair amount of extra pieces/ features that aren’t explained at all.

I returned this since it didn't work on the cheap wine bottles I was trying to cut no matter what I did. I still give it 3 stars since it might easily work on other glass types. Unsure. I did try all the tricks I googled, and still could not cut ONE bottle.

I was disappointed all around with this product. For one, the glass cutting knife that arrived with it was defective. The head has tons of play--maybe 10 or 15 degrees and the screw came stripped. I still got it undone and can see they cut the metal really uneven to hold down the head. The bottle stand was just as frustrating. The design does not allow for a quick adjustment because none of the nuts are self-securing. Even time you need to make a tiny adjustment, you must pick up the whole stand and get tools on the top and bottom. I also have really sloppy hardware on my kit, I actually have a phillips screw that only has 3 of the 4 edges cut out so I can't even adjust that one. The axels holding on to the wheels are far smaller than the diameter of the weels and each have about a 1mm gap so you cant rely on them to keep a straight edge. There's also no way to change these out. I had no confidence in the product so I took a few less important bottles and spent a lot of time getting the adjustments so the blade would meet the bottle and it would be touching all 5 guides. Still, the bad design resulted in scoring that didn't meet line to line. I ruined bottles to confirm what I could tell just from looking at this. It's unusable if you want to produce the kind of glass cuts they show in their product photography.

This was really easy to use. My first round bottle was close to perfect and got better after each use.

La calidad no es tan buena como la ponen en la fotos. Los guantes dejan mucho que desear. No es fácil cortar botellas de vino

The product does not cut evenly and is jagged. I would not recommend the product.

Works, but the built is a bit flimsy. In order to get a clean fracture line, you need to score the groove deep which requires you to score the bottle twice while applying pressure (scoring once usually can't get a clean cut). However because the thin metal stand flexes, the score lines isn't always straight and end up producing a rough edge. It's not too bad but would take some practice.

A bit on the flimsy side as the thin bracket bends, therefore a straight cut is near impossible.