How to Cut Glass or Mirror 

When you actually break the glass, do not press in the middle of the pane. Press on one edge of the score and let the break "run" to the other side. You may get away with pressing in the middle when cutting thin glass, but it surely will fail with ticker than 6 mm.

So helpful! There were so many details that other videos and the instructions don’t mention but make a world of difference!

This should be an instructional video for everyone else who uploads DIY videos ( including cooking ). This guy presents the information in a clear narration with excellent photography and editing. And he DOESN'T WASTE THE VIEWERS TIME by giving extraneous info, or bragging about himself.

All the comments saying "that's wrong" or "don't do it that way!" or "I'm an expert"...both his pieces cut perfectly. Great video, thanks

Definitely the best glass/mirror cutting video on RU-vid hands down. Went through 3 large mirrors before watching this video. The 4th mirror was a charm. Thanks Woodworker Guy !

good video! I am a cabinet installer and many jobs require glass to be cut for upper cabinet doors. I have always ordered from glass company's or a hardware store if its just a few pieces (they freak out of you want more than like 5 pieces cut, as if it is some huge order) the issue with that more than the cost is time, I usually do not know the sizes until I am on the job and have the cabinets in hand, so it means a special trip back to do the glass when the glass co finally has it ready. so TODAY I decided to cut my own...only four small pieces but I had a decent amount of glass to work with. the first few trys at scoring were horrific, could not get the wheel to cut consistently or stay straight , then magically it started working better. so what he says about the cutter needing to break in a bit is true. I bet oil would have helped as well, I will do that next time for sure. biggest thing I figured out today was being "confident" with your scoring and breaking is the key. just roll it along with a good amount of pressure, keep it as straight as you can but just one pass, pay extra attention to the start point and end point, get a good score, then when you break it just do it, do not be shy . a nice swift action is the way to go , only times it broke wrong was when I was being too careful. if i needed to break a narrow section off I used a small metal bullet level and just smacked it. once I got over being afraid of it braking wrong it stopped braking wrong.

As soon as you score it , break it no need to clean it before you break it. The longer you wait the harder it is to break. Tip fro my father-in law who was in the glass industry for 40 plus years

😁 thanks for the mirror tips, you just saved me from having to go get more mirror !

Most informative video of glass cutting I have seen. Thank you.

That is one of the best DIY videos I've ever seen, authoritative in a gentlemanly way, and three top tips I had never heard of! Clean the glass, oil the cutter and cut the mirror film first. Superb job!

I've struggled cutting glass and mirror s for yrs. Doing furniture. Window , artwork etc. I had a diy projects was dreading it. I watched your video. Had and omg moment! This was so much easyier. Thank you!!!

Excellent! So well done and informative. Very much appreciated.

Thank you for this demo. It was nice to learn how to cut glass. I was aware of the tool but your precautions is good to know to. Good informative video.

Thanks for sharing such a helpful tip. Very professionally done too x

I never knew how to do this. Thank you!

Thanks so much for the tutorial! Quick and easy!

This was really helpful and just what I needed. Thank you.

Today I first found glass cutter exists and I couldn`t believe how easy and fascinating is that

Thank you! Best video on glass cutting

Very nice glad you give information on this topic

Wonderful vid, thanks mate!

Incredible video!! You saved us a fortune!

That’s the best video ever done! Thank you so much.

Your videos are so helpful . thank you !

Thanks for your sharing this very useful lesson!

Great demo. Thank you.

Thanks for this, I was really scared to do the glass for my frames myself, but this is giving me the confidence to try!

Great job,thanks.

very well done. this helps out alot. Thanks!

I cut a few mirrors using a tile cutter. Cutting mirror backing and applying oil are great tips. Had to do lot of RU-vid searches to find that out.

You’re the man! Thank you for the video

Thanks for the tip works great .

That was excellent. Thank you.

thank you very much for your clear demonstration .now I have my confidence to cut a mirror too👍👍

Great tip, thanks! I actually have to cut some glass soon!

Thank you Rob nice job ,like the " back of the mirror tip " you re a pro

Awesome thanks for this

Thanks. Very helpful

that was helpful, thank you

Thank You So Much and Good Presentation

It was helpful for me

Perfect. Thanks

Nice and easy tutorial thanks

Thanks for sharing.

Thank you 😊

Awesome thanks for sharing

This was a great video

Helpful Thank you

Nice vid, mate!

Saving this! My sister owns a vintage compact and accidentally broke the mirror while it was in her bag, will send her this since it's a half-circle shape that'll be hard to find a pre-cut replacement for

Great vid thanks

Thank you for this! I'm cutting a very large mirror I got for free and have never done one before. Other tutorials didn't include the scoring on the back and I'd be so upset if I hadn't done such first and tore it. Now I'm comfortable cutting it to make my homemade room mirrors.

I just cut a piece of glass!!!! yay... I needed to put my weight into it over a dowel like yours along the cut line

You are cutting edge awesome!! Thank you for showing me how this is done. Pardon my terrible pun!!

Thank You🙏

Thank you

thanks to teaching ....

Great Sir

Thank you sir

Thank u so much

That's a "BIG EASY" button push. I like the dowel as an anvil to help keep the pressure even along the break line!

❤️👍 VERY NICE VIDEO

thank you. big help, so now i know i can cut my broke mirror into new size by myself alone.

Thanks

It's a use fully

Thanks now I know how to do this.

Thanks for the tip of cutting the coating!

nice

Josh brolin back in the workshop

Can you do it the same way if it has curves?

I have always been afraid to cut glass......NOT ANY MORE>...! Thanks for the Video...! Al Sautner

Great video with clear instructions.. BUT!.. they could of at least had this man give a shout out for the sites/brand names of the tools hes using, or at least attached a link.. 🤷‍♀️🤔

Strange song choice for this tutorial...but the video is very much appreciated!

This was a great video plus you did the Wu-Tang thing at the end so I'm in

Now I can try this that way I can cut my glass to size. What grit sandpaper to sand it with?

Your explanation was easy to understand and excellant, I want to make the grooved board on your back to hold things, please make an article on that

This is the hardest thing that I have ever tried to do and the frustration is about to send me to tears. 😡😩 my glass is breaking uneven.

Is there other oil can be use to lubricant your glass cutter? If i dont have a glass cutter oil

Can you ue any oil to dip your cutter into?

Glass cutting oil - you gotta be kidding me... Thanks for the video!

LOL.....the tiny glass shards are the result of not lubricating the cut prior to the cut....the cut "freezes" if the cut is "hot" (no coolant)...I know, a contradiction in terms. Never push away while cutting. No need cut the mirror backing before you cut it on its face, and finally, you are holding the cutter upside down......

What's the glass oil for? And do I need to use it?

Question. I work at a big box store and cut glass quite often, mirrors not as much. You are probably aware of the device we use to measure, hold & cut. We never use cutting oil and never back cut mirror. We just score & break. Why would we not need to cut the backing on a mirror or use cutting oil?

Been cutting glass for 45 years. Don't cut the back of the mirror, just wasting time. Apply the same amount of pressure to thin or thick glass.

Is that actually glass cutting oil or can you specify what kind of oils to use?

hi, can you please show us how to cut a round hole in glass, to fit an extractor fan.

I think it's a carbide cutting wheel. If you have a diamond cutting wheel please give the details of your cutter.

Thank you for wearing gloves, looked at others video were they didn't; tragic

noticed you sanded the glass after cutting but not mirror can mirror be sanded on edges to smooth

I cut a glass door a table but need to smooth the edge. How do I do that???

Pure alcohol and heat...helps alot too

Will this work on all glass? I got a coffee table top that is the strongest glass I have ever seen, it literally supports my entire body weight . I've scored it good and deep but it just won't break? I am now thinking it's some special type that won't snap? Is there any such?

Nice! You should cover the snap point with a rag or such as masking tape just tagged on to be even safer from things flying up. What the hell is glass cutting oil? lol! 3 in 1? Olive oil?

why do you push in the middle instead of starting the break from one end of the cut line?

What is glass cutting oil? Mineral oil? 3in1?

That is not a diamond wheel.. "A glass cutter may use a diamond to create the split, but more commonly a small cutting wheel made of hardened steel or tungsten carbide 4-6 mm in diameter with a V-shaped profile called a "hone angle" is used. "

That is not a diamond wheel !... it is either a steel or tungsten steel wheel...they do not make 'diamond glass cutting wheels' ....but they do make 'diamond glass cutters' . Which as the name implies is a diamond that will cut glass ! Cutting mirror is exactly the same as cutting glass.....but you should only cut mirror on the reflective surface ! You do not need to scratch through the protective backing paint. When cutting glass you would cut along a straight edge, pulling the glass cutter from the top down towards yourself, you can apply an even pressure this way. pushing a cutter will make things harder to do. I am very surprised to see WWJ giving out vague info.

What size sandpaper do you need? (I cant remember the proper term of measurement for various Sandpapers😂😂)

100th comment 🇮🇳

If I need a standard size glass like 8x10, or 5x7. Etc. I go too local dollar store. Buy a $1 frame and use the glass out of that. Its sized no cutting!!!and a dollar cannt beat it.