Heavy-duty Circular Glass Cutter with Suction Cup 40#

Follow the directions or watch a few Youtubes. There might be some more expensive ones our there that help with cutting fusible circles for glass crafters---this is excellent. It has suction which is helpful. I was able to cut a circle and then a circle within the circle. I'm very unskilled but be patient and you will love this. If there are edges you just grind them. Shipped quickly. Works well. Highly suggest.

The operation of this product is easy to figure out, and it cuts glass in a perfect circle. Caveat: the printed instructions are worse than useless. To use it: (1) clean the center of the glass with windex; (2) place the rubber suction pad on the glass; (3) flip the top lever down to engage suction; (4) move the cutter head along the arm to the desired radius, and tighten; (5) use a magic marker to indicate the start/stop point on the glass; (6) using firm hand pressure, begin the cut at your mark and steadily move the cutter head around the 360-degree circular arc, stopping at the start mark; (7) disengage the suction, remove the device, flip the glass over and tap along the flip side of the cut with the ball end of a glass cutter to complete the cut.

very good product

This is a poor quality item (I won’t even call it a tool). Garbage, non-replaceable cutting wheel. Welds that are even finished in the oil tank. Glad I looked it over before giving it as a tool gift. Very disappointed. Don’t waste your time or money on this item.

used this to cut a hole in the window - had to watch a video online as to how to do it (the instructions were in another language) but worked great!

I bought this circle cutter to make a replacement glass face for an antique automobile clock. I am a retired glazier and have years of experience working with all types and thicknesses of glass. It works just fine even though it has too many moving parts. It doesn’t need to have the “hinge” that allows the “bar” to move up and down and the cutter head has no need to swivel.Now for my review of the reviews!As I read the negative reviews it became clear that the vast majority don’t have much, if any, experience cutting glass. One reviewer complained that the tool was bad because it could not cut a round hole in a piece of glass. That is impossible to do as a novice and very close to impossible for highly experienced glazier.A glass cutter is NOT like a saw which removes a small amount of material when it cuts. A glass cutter merely weakens the glass for a short period of time so the glass is NEVER freely separated at the cut line. If you need a hole in a piece of glass, like for an umbrella in an outdoor table, you need to drill it with a special drill, abrasive material like carborundum, and a lubricant to cool the glass and the drill...Here are some basic tips on cutting glass:1. Use oil and just enough pressure on the cutting wheel to hear a continuous scratching sound. This takes experience!! There is no magic shortcut, it takes time to get the “feel” of different types and thicknesses of glass. Even after years of experience there are times when things don’t go as planned and you are left shaking your head, but most of the time it is almost magical!2. Make the break as quickly as possible after making the cut! The longer you wait the less likely you will get a good clean break… The glass is weakened slightly by the cut and the glass is heated at the cut line due to the pressure used when making the cut and if you wait the glass cools. If you try to make the breakan hour later it may seem like you never cut it in the first place!3. Use a new sharp cutter for thin window glass (single and double strength) and an old well worn cutter for thicker (3/16 and over) glass.4. NEVER go over the cut a second time. You can’t “patch in” a skip in the original cut, it very rarely works and you will always try…. It’s human nature, good luck!

I had never cut circles before and this tool makes it SO easy. I highly recommend it.

This isn't the easiest glass cutter to use. However, I struggle to make any successful circles without cracking the glass around it. Even if you get to where you can keep the head from swiveling during the score, it still manages to go around the circle one and a third times before it matches up. (See photo) You should hear and feel a distinct "click" when it arrives at the beginning of your score and you should never overscore your glass.I don't know if the suction cup or the head is to blame for this.It's fine if your goal is a (mostly) circular pc of glass. If you're after the hole and not the circle, this is not the tool for you. I think I'm fairly competent at cutting glass, I've been doing it off & on for over 20 years. I can't seem to figure out the secret to this. There are setting screws on the suction cup and the cutting head but I can't figure out their purpose.Also, I've only used this a handful of times and already I'm seeing chips out of the glass after a score so it's not as sharp as it should be.