Adam Savage's Favorite Tools: Glass-Cutting Rotary Bit
HTML-код
- Опубликовано: 25 май 2020
- Double helix steel grinding rotary bit amzn.to/3emhelP
Glass Cutting bits: amzn.to/3c3EMdq
Fluke Multimeter: amzn.to/3d3G49T
Proxxon Rotary Tool with US plug: amzn.to/3bpDGtl
Proxxon Rotary Tool with AC Adapter: amzn.to/2z9SIF5
This tool tip was learned the hard way by Adam on a job he did (with Jamie!) many years ago that required precision carving around a glass bottle. Back then, the job took hours and hours with careful and stressful application of a circle cutter. And it was only afterward that Adam learned about the efficiency and precision of a hardened steel glass cutting bit for his Dremel rotary tool. Let's watch a demonstration of this tool that shows why Adam always has a few on hand in his shop!
Shot by Adam Savage
Disclaimer: Tested may earn an affiliate commission when you buy through the links here.
Subscribe for more videos (and click the bell for notifications): ruclips.net/user/subscription_c...
Tested shirts and more: teespring.com/stores/adam-sav...
Twitter: / testedcom
Facebook: / testedcom
Instagram: / testedcom
Discord: / discord
Tested is:
Adam Savage / donttrythis
Norman Chan / nchan
Joey Fameli www.joeyfameli.com
Gunther Kirsch guntherkirsch.com
Ryan Kiser / ryan.kiser
Jen Schachter www.jenschachter.com
Kishore Hari / sciencequiche
Sean Charlesworth / cworthdynamics
Jeremy Williams / jerware
Kayte Sabicer / kaytesabicer
Bill Doran / chinbeard
Ariel Waldman / arielwaldman
Kristen Lomasney / krystynlo
Intro bumper by Abe Dieckman
Set design by Danica Johnson / saysdanica
Set build by Asa Hillis www.asahillis.com
Thanks for watching!
#AdamSavage #FavoriteTools #ShopOrganization 
Наука
![TRASH or PASS! Eminem ( Houdini ) [REACTION!!!]](http://i.ytimg.com/vi/cB1WrZcMwMc/mqdefault.jpg)
![How to Cut Bottles in 3 steps [best bottle cutter]](/img/1.gif)
I’ve made lots of cuts and holes in glass and I’d like to suggest something: get an extension cable to the rotary tool where any electrical components are further from the cutting head. Then get a tray or any kind of plastic container that will fit your glass object and your hands comfortably. Fill the tray with water and work with the object as submerged in water as possible. If you can’t keep it submerged, keep most of it and dunk it as you work. The water will lubricate the glass and the bit, yes, but it will also keep both cool, which means you can use more pressure on the glass and cut faster. Besides, the water will hold all the glass dust, which will sink to the bottom, keeping your air free of glass dust and making it much easier to clean up afterwards.
Even Though adam and jamie are not friends, you can see the repect they have for each other, Adam calling Jamie a genius in this vid...
Yeah, that's called professional respect. It's something I wish people today would understand. You can work and respect the abilities of a pro you are working with, but at the same time don't like them personally for any number of reasons. I find too many people are in this all or nothing mode. I think it comes from the office hiring world where they hired for "fit", meaning everyone should work together but also be friends. Old school was , do you job, and if you are friends after, good. If not, don't let it mess with the job.
This is part of why both of these men are role models for me. ❤️
@@SSingh-nr8qz I work in the health industry. And while I've met plenty of great nurses, I wouldn't be friends with quite a few, but still acknowledge that they're great nurses.
👍
Absolutely true. Adam talks about the influence Jamie had on him in his book, too.
There in the acting biz, off screen, they need restraining orders amd personal protection. :-D
Fifty years ago I watched my father drill holes in a glass mirror so he could mount it on the wall. He used a drill press with a large table extension on it. He put the mirror on the table protected on the bottom by a towel. He chucked up a piece of copper pipe with a diameter he wanted the hole to be. He put water on the mirror with some fine grinding compound in it right where he wanted the hole with the drill/pipe right above it and began to grind a hole through the mirror. It took a long time with a light pressure but it worked every time. That's how they did that back then. Maybe there are better ways now. Adam's method looks pretty good too.
Exactly what I was going to comment, got that from a hundred year old handyman book that was my father's. It said to make a well with putty and fill it with light oil and carborundum, stick a washer on the putty that would locate the pipe and chuck it in a hand brace.
@@glanzaguy9187 Thanks for the comment. You have better details than I remembered.
Valve grinding compound
cool nice story thanks for sharing.
man wish i knew about this when i was trying to make my own bongs in high school!
When Adam starts his own tool line for Makers, the internet may break.
The internet will definitely break
Cant wait for that day
But we will all have the tools to fix it. Because they are quality tools
Adam should find a place to make the little twacker and sell it.
@@shadow7037932 With a slightly thicker handle.
I'm new to Dremels, but this thing has been great. ruclips.net/user/postUgkxfPgcZ5_Cl0HDUKkMJAKde11YKQZVgMoR The variable speed is awesome and the cordless aspect makes it so easy to work with. I am constantly finding uses for it that make tasks easier. Recently I put in a new deadbolt on one of our doors. I knew I had to enlarge the hold where the deadbolt goes into the door frame. At first I thought I would have to get a big router and figure out how to use it for that, but then I rermembered we have the dremel. I was able to enlarge the hole almost as easy as if I was drawing with a pen. It's also great for grinding our dog's nails done and so many other household tasks.
THIS IS EXACTLY WHAT I NEED!!! I have spent the last two weeks trying to figure out how to LEDs into old vacuum tubes, everything from trying to tap out the bottom to learning a bit of glass blowing and nothing was working
Drilling glass is also pretty easy with carbide dental drill bits, the ones actually used for cavities and such. Good for very small holes and detail work.
I use a super cheap diamond dremel rasp set I got for like 10 bucks on amazon
Interesting
Yes. Dental drill bits along with airotor cut glass like butter without cracks
Hey r u actual Nate from TKOR?
@@HelloHiHelloHiHello Yes
I love Adam’s story time, because it’s never just one story. You get at least three for the price of one.
Adam, you need a closed plexiglass box in which you insert your hands from outside (like the microbiology labs) to do these glass dust jobs (which are a serious hazard even when you are done. Its better to keep glass dust contained and much easier to collect and dispose. You can use that plexiglass box for a ton of other projects.
In case anyone is wondering, these are called glove boxes or still-air boxes in microbiology. The easiest variant would entail something like a cardboard box with the top open and two holes for the arms on one side, then lay something transparent on top to look through
@@MarcRitzMD make a hole on the side, add shop vac, no need for additional cleanup.
@@shabath what is a shop vac?
@@clarisacalderon9555 its just the name for a vacuum that you use in a workshop.
Hi Adam I just want to say that you have been a huge influence on me since I was a kid thank you for what you do I wouldn't be who I am without you
I would love you to hear my view I have been trying to contact you since I was little please hear me
R u Elon Musk or what?
This is the kind of content I love the most, where you learn about a tool or technique that takes an insanely difficult or time consuming thing and turns it into no big deal. Thanks for sharing this!
I love the way you narrate life events and concepts. You're very intelligent and descriptive with the way you describe events. Then to top it off you add some common sense moral virtue gained from your journey. Great video.
One of my favourite memories of the Foothill - De Anza ham radio flea markets was having a hot dog for breakfast at around 6:30 in the morning...
I started going to the Foothill ham radio swap meet when I was like 15 and working on my ham license. Never did get that license, but spent a LOT of early mornings getting up and going to the swap. This is one of the places that sparked a very imagination about the possibility of makers. Thanks for the memory.
Yes, thank you so much, Adam. My mental toolkit is growing by leaps and bounds! Keep these tidbits coming!
I love that you can hear his Mother in the back still sorting through Legos!
Only thing missing is the "More Lego Noises" captions.
Really hope they start putting captions in future vids.
I saw a reflection of her chained to a radiator..lol.
I remember a sound engineer saying he preferred old vinyl records "because the sound quality was so pristine you could hear the guy at the back of the studio eating crisps". Maybe "mother sorting Legos in the background" could be the new euphemism for "noise".
I was so nervous during the (w)hole cutting process!
I'm nervous whenever Adam has his fingers near a dangerous tool now haha.
@Tascanis underrated comment. @@shadowbird25 IKR? I'm sure he caught his thumb on the chuck after he started it up.
Oh God that pun. Beautiful execution.
Adam has that quality some people have that you can listen to them tell a story for a long time and be absolutely engaged and interested the whole time.
Thank you so much for your tool tips. My Dad has been trying to find a way to work with glass and this is like a magic trick! And right before Father's Day. You are a National Treasure Adam. Stay safe. Keep making.
Ahh the wonders of the Dremel. My favourite small tool. I've found that no matter how thick or thin, if you can fill the vessel you're cutting with water ( you can also use a clear oil as lubricant) you almost never have problems with chipping or, more importantly, cracking at.breakthrough. Even on something as fine as a light globe .The water distributes both heat and vibration more evenly and away from the glass A piece of clear tape can avoid cracks and slipping at the beginning too. It allows for a little faster.cutting. Thanks, I Love all your tips Adam. I can use all the help I can get.😁
Hey Adam, Dremel also has some fine point, diamond bits that are great for drilling small holes in delicate glass. That is best done with the flex tool extension and submerge the piece of glass just under a bit of water, which also keeps everything cool to avoid thermal breakage.
I have successfully used a piece of steel tubing of the appropriate outside diameter with the end cut squarely. I turned it with a drill press using a slurry of carborundum powder and water. When drilling flat or convex glass, such as into the side of a bottle, I used a putty ring to form a crater around the drill to act as a dam for immersion of the tubing "bit" in cooling water.
A natural story teller. Born to do what he has been doing so well!
Adam: "My Proxxon dremel..."
Proxxon: *cries*
Heh yea some brands become synonyms to a product like dremel, plexiglas, walkman and more that I can't recollect now
"my proxxon rotary multitool" is a little more unwieldy to say
@@Hoggaforfan Bandaid, Kleenex, Velcro.. It's a very american thing to just name a group of products by a brandname.
@koooo34 Not just American; Brits refer to vacuuming as "hoovering" if I'm not mistaken. I'm sure there are countless other genericized trademarks in countless other languages and countries.
@@KnuckleHunkybuck I didnt say it's an exclusively american thing..
Adam I’m a middle school orchestra teacher and part time maker and I just wanted to say thanks for making myth busters for me to watch something wildly creative and inventive as a kid
Como
Elena Rodrigues what does that mean
For someone who is about to go into unique lamp building. I can say that this video alone has saved me an eternity of headaches and long hours. Thanks Adam!!!
Always love watching these little ideas and tips. I don't have the space for a full-fledged shop like this right now, but I have part of a room devoted to miniature wargame modeling, and your shop gives me great ideas for how to organize stuff. I've been a model maker ever since I was a kid and My mom taught me how to make plastic and balsa wood airplanes. My son watched your video on Lego organizing with me, and it inspired him so much. He said, "Wow, that makes me really want a shop like that so I can make stuff." He thinks your shop looks organized but "cozy." He is 16 and I am happy to see him inspired in this way. He also enjoyed The story behind the sign! Thanks for all the great videos, and keep 'em coming!
Adam's Dream: Being on a plane and someone standing up saying "Is there a Maker onboard? We need a hole cut in a glass bottle!" And Adam will be like "I just happen to have my Glass-cutting Rotary bits in my carry-on!"
Does anybody have a video of the Perrier Commercial? I'd love to see it.
ruclips.net/video/cylWFggm6dw/видео.html
@@vizionthing don't know if that's the commercial Adam talked about, but since I was expecting being RickRoll'd, I'm pleased
@@florezescobar I don't know either its all I found and looking at the last cut it fits very well as well as it being from the late 80's, I really wished Adam read the comments so we could find out for sure.
Sharing best practices, one of the positive things the internet makes possible. Great video Adam. Your energy is so infectious. 😄
I just told a friend that I would start my search for glass cutting bits with you. Which brought me to bet #2. I am not a gambling man unless I know I will win. Bet one has a 2% chance of failure, but I had 99.99% chance with you. Thank you for sharing so much of your trials and tribulations with us 🙏🙏🙏
Question: I remember you and Jamie doing a special about glass and how we are in the Glass age of time. In that special you talked about Gorilla glass and its strength. Have you worked with Gorilla glass more since that special or not?
Since then we have Sapphire Glass, remember. Gorilla glass is still very strong, but doesn’t compare to Sapphire glass!
@@cmdrmeldoc59 you mean like on iPhone screens? Because remember, it still "scratches at a level six, with deeper grooves at level a seven"
There are sapphire screens though, but iirc they aren't glass...
@@kingoftherevolution4855 I heard that and that RUclipsr's voice too
@@kingoftherevolution4855 iPhone screens are using Gorilla Glass not sapphire.
While sapphire "glass" technically isnt glass, since it can be used in the same applications that's pretty irrelevant to this discussion.
@cmdrmeldoc59 Saying that gorilla glass doesnt compare to sapphire is also incorrect. The strength of sapphire glass is it's hardness which makes it extremely scratch resistant. However it is also a lot more brittle.
@@Koooo4 oh, I know iphones are using glass, but there is sapphire *in* it and they *advertise* it as super scratch resistant sapphire glass. Also the discussion was about glass in general, so I feel like saphire screens/watch faces not being glass is relevant afterall
"I'd like a second bottle for assurance."
Jamie low-key punishing you for *something*, I just don't know what.
I have that exact multimeter. Awesome! It works perfectly and is reliable.
The right tool for the right job. Glad you can respect Jamie, even though you aren't friends. Very professional attitude.
When I was five I asked my neighbour how he was and he told me he had had a really terrible day trying to cut a hole in a glass bottle for a lamp using a wood drill.
I wondered off thinking he was an idiot because he didn't use a metal drill, also who knew they made wooden drills!
cant tell if its sarcasm
@@kkuhn Pretty sure it's a joke, if not that might make it even funnier. lol
@@eatmedrinkme9628 Guys its a true story, from 1974
Lol! "Why would you use a drill bit made out of wood?"
Classic kid's literal thinking.
wandered but ok lmao
Early, cheers from Tokyo!
I’m so glad Adam is on RUclips. I thought life was over when Mythbusters went off the air. Sure would be great to see them do something together again
you know...i would love to work/sit down and just listen to Adam telling stories. You are one awesome/lovable human
You should subscribe and wish for the lockdown to last a lot longer..
I've recently gotten into stained glass art. I remembered watching this video when it was first published 2 years ago and here I am again now. Thank you so much for your content - very useful.
That's cool. I also just started learning how to do stained glass. I don't suppose you know of any active forums where I can ask specific questions?
"Glass dust... don't breathe this"
Ow the 'will it blend' memories came flooding back then aha
It’s just flying around the shop. No doubt some landed on the bench, and now he sets his arms on it. I’m thinking he’s going to be itchy for a while...
But do look over the top of your safety glasses (see thumbnail)
Must be dangerous if Adam is wearing PPE, he rarely does.
Glass dust is not as bad as people think, but of course it doesn't do anything good in your system either.
Glass Cutting bits: amzn.to/3c3EMdq
Double helix grinding rotary bit: amzn.to/3emhelP
Fluke Multimeter: amzn.to/3d3G49T
Proxxon Rotary Tool with US plug: amzn.to/3bpDGtl
Proxxon Rotary Tool with AC Adapter: amzn.to/2z9SIF5
Those "tool bits " are not what he used.
This is one of my favorite tools especially with the small diamond disc cutters,they are insanely good for cutting fibreglass or carbon fibre components.
I etch portraits and art onto glass and I just basically draw onto the glass but I wanted to make some light fixtures with some candle holders. Thank you for the video. This is what I needed.
Had to make a hole in a mug for a video at one time. I went through my drills to find one that could do the job. Then just for the hell of it I tried with a steel nail and a hammer. Got the perfect hole 🤣 I know this would not work with glass.. but still find it funny that a hammer and a nail got it done.
On one of the space shuttle launches, the crew had some spare mass for personal items to bring to the ISS. One of the astronauts decided to bring a regular crowbar because it was funny. On the station, they were doing some sort of maintenance, and the multi-million dollar tool that NASA sent with them didn't work but the crowbar did.
@@johnracy2871 : oh the surprise then that crowbar survives reentry (garbage jettison) and lands on some random roof.
budget bong stoners love this trick
use platic bottle, and some hot-glue or silicone way easier to work with ;-)
Yeah plastic with a wrench bit for the bowl, you can make cheap and easy gravity bongs. My friend who liked to make them called them "vortexes". Nice and descriptive name, I always liked it lol. Just don't use anything aluminum, that's a big no-no.
Metal etcher is the traditional way.
Foothill Swap Meet was legend, went many times. Thanks for the memory.
I really appreciate that he did this entire video in one take.
"This little bit does its bit" :D
I have most of my tools in my garage and everything gets covered in dust. I often think when I watch this channel, how much dust must be on all his space suits and movie collectables.
He probably has amazing dust collection systems
Yeah, I would really love for Adam to talk about how / if he manages to keep his cave clean.
Alec steele build himself a room specially for grinding because he couldn't cope with metal dust everywhere. Also it helps manage places of mask/no mask works. Puts his astronaut suit right next to the door.
As someone starting out as a machinist, I can totally relate to using up all of your luck on the first piece of a batch. Doing something right the first time is always satisfying, but achieving the repeatability with equal or less effort in its subsequent parts can be pretty humbling pretty quick!
Nice story. Awhile back I came across a set of these bits and I remember my first cut I was very surprised at how well they worked.
Adam: I'm going to be grinding glass
Me: wear a mask wear a mask wear a mask wear a mask wear a mask
Adam: **wears mask**
Me: **proud dad tears**
He never wears a mask for painting or wood working, where it would matter. But glass dust is soo inert and does not harm your lungs, and he insists to wear a mask suddenly...
Honestly the welding with no gloves gets me the most
@@MsKoffeinjunky The danger lies in the fact that glass dust can embed itself in lung tissue causing silicosis, lung cancer, or other lung issues. Definitely wear a mask when working with any sort of particulates.
I know it doesn't really fit his style, but I really wish he'd realize that he can wear a mask and do a voice-over later rather than not wearing a mask just so that he can be heard on camera
@@JMALEEDY why? Ive never used floves when welding
Safety Police checking in: That's a no go for me without goggles / face shield and gloves
Tile and glass cutting bits are your best friend for that kinda work.
Thanks for sharing your story and a much easyer way to cuttinga hole in the bottom of a glass , Adam !!!!!!!!!!!!!!!!!!!
Omg if I had this when I was a teenager.... so many bongs! Hahaha to bad I don't smoke weed anymore
Justin Snock...sure...we all believe you don't toke any more....NOT!!!
@@skibum4207 Yeah! You are either s smoker waiting for the next toke or a non-smoker who has never toked, nothing in-between!
Work is way more important then getting high maby later in life...
@@justinsnock8684 If you wait too long the best part of your life will be over - the high will never be the same again - enjoy it now!!
I love that he says he’s in his cave😅
Adam built his Iron Man suit in his cave from bits of scrap!!!
Now doubly glad I purchased that Proxxon. Love it. 👍
This reminds me of when there was a co-worker trying to drill out a bolt that lost its head. Carefully over the course of 2 weeks in his spare time finally getting it out safely (it was a hardened steel bolt stuck in a $10,000 housing that he was trying to not damage). I brought him a second one to fix about a week after he fixed the first one and I could see him considering quitting over this happening again. And I asked him where his easy outs were. Turned out he had no clue what I was talking about so I told him to wait until tomorrow and I would bring mine in so he wouldn't have to waste any time. after seeing me remove the bolt in about 4 seconds he offered me $200 for the miracle tool. After telling him that they were like $10 he started the longest string of expletives I think I have ever heard.
A couple of years ago, I cut two holes into a glass 12 oz Sprite bottle. The classic old-school Sprite bottle. It took hours. Even using a diamond cutting tool. I am definitely going to look into one of these bits. Thank you Adam.
My folks bought me a fluke series 10 when I was a teen. I still have it, I still use it, I still love it.
Absolutely agree invest in the best tool you can afford which is the right tool for the job.
This helped me so much!!! Thank you! I wish there was more useful education like this out there.
i've done some glass drilling for hobby projects as well. and i can definitely confirm this is the right tool for the job.
at first i used ceramic rotary bits. they work okay, but wear down really fast
And WOW! Adam, every time I watch a kick-ass demo of yours, and then go to the Amazon link to check it out -- it says " CURRENTLY UNAVAILABLE - we don't know when this item will be back in stock." You are single-handedly reviving the economy.
I love these favorite tools videos so much. Please keep making them!
Thank you for mentioning that swap meet! I'd never heard of anything like it before, so I had no idea what to even look for.
Brilliant! Love your work, Adam! I still have your "I reject your reality and substitute my own" T-shirt that I bought years ago and just last week got a compliment on it at the grocery store!
The tools are always awesome! However, the stories are way more satisfying!!!!!
I engrave metal and I have read several books about etching glass. I have tried it unsuccessfully more than once. Before I watched this YT I would have said what I say you do was impossible. Thank you for sharing a very cool tool tip!
Loving hearing this history :)
This is why I love my Dremel, it’s been a very useful tool for stuff like this 😁
Is there a market for a better rotary tool? one that is brushless, wireless and very robust? one that oozes quality with the right colours and the best ergonomics? I want one. If there is a market I might want to get some made.
That's a real useful tool. Very handy.
I think this guy would be like in my top 3 people I'd like to meet. I love the way he just loses track in what hes talking about, hes got a lot to show and I like that
Really cool! I need to get a set. Thanks.
Absolutely BRILLIANT! By the way, I am a middle school science/STEM teacher and am a major fan of you and your show.
this video comes at the perfect time i want to make a something with a nice gin bottle and did not know ho thanks a lot adam now i gottta find one of those but that saves me the time of research i have to do
When a project occupies these guys for the better part of a week, you know it's a challenge. Wow.
An awesome little bit! I’ve used a similar bit in the overhead CNC router to cut concrete board. It works great! 😀💥🚀
I don't have a Dremel, nor would I have the need to ever bore a hole into the bottom of a bottle, and yet here I am watching Adam do it. And I was fascinated the entire time.
I remember drilling a hole in a wine bottle for a power cord to make a lamp.I used a masonry bit to do the job. It was a bit tricky but it worked quite well. But THAT, would have been a lot easier.. So cool you share your tips Adam. Much appreciated.
I was literally using my Proxxon, that I got after you recommended it, to etch glass today and yesterday.
I bought both the proxxon and the bit they recommended and they don’t fit. The bit is too big
That was super freaky to watch ,i didn't think that was possible ,i will be ordering some of those ! thanks
I recently used one of those bits to cut a hardened steel chain to length because it kept eating through my cutting discs. they are amazing and I need to get more.
Great story. I enjoyed the video. Thanks.
Jamie and Adam are my childhood heroes! :3
I know you and Jamie didn’t always get along, put you obviously have an inherent respect and love for him. That’s beautiful to see. That just because you “get along” with someone, you can still respect/love them.
That is so crazy seeing a material like glass being worked that easily
I used Valve Grinding Paste on the end of whatever I needed to get through the glass.
Worked a treat...
Great story Adam. Yes glass can be a fickle friend, but in the right hands it can take the shape of whatever you can imagine.
Hi Tested I'd like to drop the first few ideas I had to complete the Perrier bottle project :
- Circular steal pipe of the wanted diameter heaten to 1800°C gently making a hole
- Carving with semi precious stone surfacing tools (which is similar to what you used)
- Make a (hard plaster) 2 part mold of the bottle and use sugar to make a new one.
- Make a lather tool with diamond powder cemented to a steel carving tool.
You talked about cooling the glass earlier, I don't think you want to keep the glass cooled as it enhance tensions inside it and makes it more even to break.
Love the videos, cheers !
Love the favorite tool series!!!
Awesome...appreciate your knowledge/wisdom! Thank you.
Why is it that every time I see something like this I immediately look for it on the Internet even though I really have no need for most of it. But now I know it's out there!
I'm a soft glass worker (furnace and blow pipes and punties etc) I whole heartedly agree with the usefulness of the Dremel tool. Just like drawing with a stylus.
I made a bong from a vase with this method when I was 17. Secretly in the basement in the hope I could sneak the thing unseen to my room. It worked! I made the bowl from a piece of oak with a proxxon mini lathe from my dad haha
This illustrates something I learned from this channel. Whatever you need to do, there’s probably a tool for it.
I once went to a State Fair in New Mexico and watched a demonstration from Rodman tools where the sales man drilled holes through everything (a file, glass, ceramic, another drill bit form another manufacturer) with the drill bit he was selling. I was immediately taken by the versatility of these drill bits and bought the lowest price set he had over 100 bucks but, at the end of the day I still have the bits and that was over 30 years ago. Sometimes you find gold in the weirdest places. Thanks for the awesome and motivating tool videos..
When I bought my Drexel, it came with about a dozen different sized and shaped diamond covered engraving bits. They cut through glass like butter. I usually just keep a little trickle of cool water running to keep dust and debris down, but have never had glass break while I've been cutting it.
thanks
I Love the Lego sorting noises subtly in the background =D
I think I have one of those bits someplace. Something my dad had from his work as a machinist decades ago.