@Ivan Cisneros this sounds like a teacher reply like have any of you ever seen clear ice. I once saw a clear icicle hanging off my roof... Wow Billy that's a great example of directional freezing.. lol
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So fun fact, making giant ice sculptures, all you have to do is have the ice on a vibrating platform with the top exposed, as the ice freezes, it releases bubbles up as it freezes. It's why large bodies of water can have beautiful clear ice.
This is how we froze optically clear 650 gallon ice blocks for the IceTop air shower array part of the IceCube Neutrino Observatory. But we took it one step further. At the bottom of the tanks we had (well, have, they are frozen in place) corculation pumps to both mi's the water and push the water through a degasser. That way as the dissolved gasses got more concentrated as the ice was forming from the top down, we could pull the gasses out to avoid the bubbles at the bottom.
@@bennyboy613 I was on the team that did the surface array that is called IceTop. I built assembled the tanks in Winchester, VA. I assembled the freeze controllers in my "home" shop at UDel. And was down at Pole to fill the tanks and start the freeze for 3 seasons. (I think the full deployment was over 6-8 seasons.)
Clear ice is also really useful for drinks that aren't cold when you pour such as fresh tea. In a large cup, the tea at the,bottom will not be chilled by your ice if it's floating to the top. However, if you use clear ice, there are no bubbles to make it float. Therefore, it will chill the bottom, where your straw goes. I initially came up with this justification when I was working a bar and was told there was no practical use for clear ice, and that it was just so the drinks look fancy. I sat and thought about it for a few days, and when I got a tea at my local gas station, I realized that the ice wasn't chilling the bottom.
alcoholic beverages are less dense than water that the ice is made of... although i suppose the less strong more mixed the drink is, the more likely cloudy ice floats while dense clear ice sinks...
You know, ice itself is less dense than water, it will still float. Which doesn’t really matter because convection distributes heat quickly in a fluid.
@@AnEnemyAnemone1 wdym? if a liquid cools from the top, there will be convection, as the colder liquid sinks to the ground and displaces the hotter one so it goes up and cools down
Nate unironically thank you sir I've wanted to do this for so long but never thought of using the insulated cup I have....I'm so happy ur a creator on this platform
If you boil the ice and then place it in an insulated container and then place it in the freezer, the ice will freeze even slower and thus push all air and impurities down even more effectively.
If you try to buy a clear ice mold for in your freezer they are all directional freezing molds, they normally have a hole in the bottom, this is a well-understood concept in the exotic drink industry
One way I know of is to freeze it very slowly. Someone I know who was a bar tender. He would fill a drink cooler with water, like the big plastic ones you might take with you when going to a beach, and he would let it sit out in the sun to get it nice and moderately warm. Then wrap towels around it then wrap it in sramwrap then set it in his deep freezer. The cooler and all the towels would help insulate it and keep its temperature high but very slowly losing it energy and freezes. Takes like 3 days for it to freeze but boy it is very clear.
This video just reminded me I left some ice to melt a bit over a cutting board in my kitchen prior shapping. They were just ready lol me and my drink thank u 🥃
I own a pressure pot for casting resin and I would imagine that would work because it pulls all bubbles out of liquid resin, so if you freeze the water while under pressure, it may make clear ice.
So I've heard that agitating the water while it freezes works wonders, I've also heard the super easy way is to take your ice out after a couple of hours, when it's got that thick layer of white that's all the gas and what not on top, and gently pour the rest into another mould to finish freezing. I haven't done either myself, just shit I've heard from science teachers and bartenders
I think this is the only/best consistent way of doing this. For larger quantities try one of those old Coleman style coolers, take the lid part off and bam. You can cut down the block into strips or cubes. I do this for special occasions and its a good conversation starter I guess
It's kinda funny to hear music you know from somwhere else in videos. Like this music also being used in Dropout (formerly CollegeHumor)'s 'dirty laundry'...
The white haze in ice is not only because of impurities, it’s because ice expands while freezing, so when the outside is already frozen solid and the water in the center freezes, it expands and produces cracks.
To make clear ice without bubbles, you can try the following methods: 1. Purified Water: Start with purified or distilled water, as it contains fewer impurities and minerals that can contribute to bubble formation. Avoid using tap water, as it often contains dissolved gases and impurities that can create bubbles in the ice. 2. Boiling Water: Boil the water before freezing it. This helps release any dissolved gases that may be present, reducing the chances of bubbles forming in the ice. 3. Slow Freezing: Allow the water to freeze slowly. One way to achieve this is by using an insulated cooler or an ice mold with an insulated layer. Slow freezing helps the ice form more evenly, reducing the likelihood of trapped air bubbles. 4. Directional Freezing: Set up a container with a barrier, such as a divider or cover, to encourage directional freezing. This means that the ice freezes from one side to the other, allowing trapped air and impurities to escape from the opposite side. This technique can help produce clearer ice with fewer bubbles. 5. Distilled Water Spray: As the water starts to freeze, you can periodically spray a fine mist of distilled water over the partially frozen surface. This can help remove any remaining impurities or bubbles on the surface, resulting in clearer ice. 6. Ice Ball Molds: If you're looking to make clear ice spheres, specialized ice ball molds can be used. These molds usually have a top and bottom section that allow for directional freezing, resulting in clearer ice spheres with minimal bubbles. It's important to note that achieving completely clear ice without any bubbles can be challenging. Even with these techniques, it's possible to have some minor imperfections or trapped air. However, following these methods should help you achieve clearer ice compared to regular ice cubes.
I use an igloo cooler. Take top off, pour your filtered water in there. Put in freezer. When it’s almost done, take out flip upside down and you have a block of ice which 3/4 is clear. Cut to order voila. More to it than that but you’ll get it as you try it.
NAAATE DUUUUDE. Not only do you share a cool name like my son, but your pretty cool too.👍Thanks for hanging in and still creating content for us. Science is important and so is tryin’stuff. Keep Sciencing.😊
i had a time tested method, use a big rectangle plastic container. time it for full freezing. let say 18 hours. so you take it out in 16 hours and smash the ice which is 90% frozen. the cloudy part hasn't yet formed, remove excess water. put it back in freezer. you have lotsa clear ice.
Ice expands as it freezes, and ice cubes freeze from the outside in, so since the sides freeze first, they all push at the water in the middle, raising the water level in the middle higher and higher while the sides freeze further and further in, until you're left with a spike in the middle where the water level was forced the highest That's just speculation though
Or you can use an ultrasonic cleaner meant for glasses / jewelry / small parts, put it in the freezer and the whole block will be clear. Given the unit doesn't malfunction due to low temperatures, Maybe freeze at a few degrees under freezing point. Though would haft to bypass the timer but the unit probably wont overheat due to being in the freezer. The ultrasonic waves create micro implosions releasing the air in the water.
I've done this before just using a bottle of water and a koozi. I had to cut the bottle after the water was frozen but the plastic is so thin it doesn't take much effort.
It is true that slow freeze and top bottom makes a difference. I have a new LG freezer with "craft ice" and it does an okay job if in slow mode with RO water.
Would it work if you put a metal case, possibly with walls that are slightly incluned to the outside to get the ice out afterwards, on top of an array of peltier elements that are mounted themselfes to a giant heat sink... Maybe putting this thing completely into a fridge to help with the temperature? Freezing would only be done from the bottom upwards... Hope I described my thoughts well enough... 😅
What happens when you put a pressure chamber filled with a bit of water in a freezer? I used to watch someone who used a pressure chamber to compress bubbles in resin to get clear castings, which gave me this idea.
There's a chance the others can work, but it's pretty low. Basically less nucleation points. I think it helps just often enough to keep it being spread as a viable method.
I'm not sure if I agree with the reason. I imagine the reason freezing from 1 surface increases the chance of a single ice crystal forming rather than many ice crystals that crash into each other and aren't aligned causing random scattering of light. However, that's just a guess. Though, I think if it was something to do with impurities then wouldn't the distilled water would work?
I think Eater has a video up on the guy who sells the most clear ice in New York the way he does it is in his tub he runs water through a pump and the water freezes from the bottom up once there is like half inch of water left he vaccums it out and then left with big block of clear ice
hello! it is interesting. can you adjust the sound of your shorts? it is very likely that you are way too lacking of volume for all your videos, but i am not sure. i am only certain about this one.
Tried this so many different ways and it doesn't work. Tried it with bowls, cups, coolers, distilled water, tap water, filtered water, cold water, hot water, bottled water. Always cloudy. Always cloudy.
Im not sure if you're supposed to put insulated tumblers like that in the freezer. I mean every single yeti cup ive been given for the past 17 Christmases have had some sort of warning about putting them in the fridge.
now i know for sure macdonalds does NOT go through the efforet to put a million little tumblers in the freezer to make their perfect crunchy ice, so how do they do it????
Ok so what if you did it upside down? If it's freezing from the top down, the impurities are basically getting pushed down right? They get trapped, and eventually the remaining water is saturated, so that the water below won't accept more dissolved gasses. That's probably why the bottom part is cloudy. If you do it from the bottom up though, perhaps you can leave an air gap at the top, for the dissolved gasses to be pushed out into. Of course, you can't just turn the bottle upside down, so you'll need something for a lid that is not insulating. Hmm, the draft angles (the taper that allows the ice to come out) would be a problem though. As it expands, the ice will be pushed out the bottom, pushing the lid off. If they were reversed, it would trap the ice. So here's what you need: A water bottle where the sides are insulated but the bottom isn't, and an insulated lid for the top (or something insulating you can just place on top). I doubt these would be easy to find though, so you would probably have to make your own. This could be done pretty simply by just making (or buying) a koozie that will fit the bottle and then putting it on upside down. (But Walmart sells craft foam that you could probably make one out of, with a lot more layers than the typical koozie, for better insulation.) Well, now that I've figured out a really easy way to to do this, maybe _I'll_ try it! I could even do it with a basic tapered stainless steel cup, if I make my own insulating koozie...
The clearest I have seen in person is icicle at my house
Thats a really good example of directional freezing, too. The drops freezing on their way down leaves little to no room for air to gets trapped
@Ivan Cisneros this sounds like a teacher reply like have any of you ever seen clear ice.
I once saw a clear icicle hanging off my roof...
Wow Billy that's a great example of directional freezing.. lol
@ELI173DEWITT thanks, that doesnt sound bad to me. And yes I've seen loads of clear ice before
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It's easier to just use them. And if you're lucky some flavor
So fun fact, making giant ice sculptures, all you have to do is have the ice on a vibrating platform with the top exposed, as the ice freezes, it releases bubbles up as it freezes. It's why large bodies of water can have beautiful clear ice.
So earthquakes?
It seems like a paint shaker would help with this
@@Tortilla.Reform I did find out another way is filtered water and a continuous pump is another way to do so.
@@grandpapaco4303 that makes sense, good to know thanks
@@vladimus9749no...
I've seen this before, but you always make it simple and easy to follow. Love all you do, keep on keeping on, and enjoy your clear ice :)
This is how we froze optically clear 650 gallon ice blocks for the IceTop air shower array part of the IceCube Neutrino Observatory. But we took it one step further. At the bottom of the tanks we had (well, have, they are frozen in place) corculation pumps to both mi's the water and push the water through a degasser. That way as the dissolved gasses got more concentrated as the ice was forming from the top down, we could pull the gasses out to avoid the bubbles at the bottom.
wat
@@kira_15_R3DHe's saying the pumped the gases out of the water before freezing it to make it clearer.
@@dud3655 Actually, we were pumping the gasses out of the water while it was freezing.
Did you work at the ice cube Neutrino observatory? That's really cool! What was your role?
@@bennyboy613 I was on the team that did the surface array that is called IceTop. I built assembled the tanks in Winchester, VA. I assembled the freeze controllers in my "home" shop at UDel. And was down at Pole to fill the tanks and start the freeze for 3 seasons. (I think the full deployment was over 6-8 seasons.)
I remember a mythbusters episode about this where vibration was a major factor in industrial clear ice making
I’ve seen people use coolers but couldn’t ever fit one in my freezer, never thought of this so thanks! It’s so simple!
Clear ice is also really useful for drinks that aren't cold when you pour such as fresh tea. In a large cup, the tea at the,bottom will not be chilled by your ice if it's floating to the top. However, if you use clear ice, there are no bubbles to make it float. Therefore, it will chill the bottom, where your straw goes.
I initially came up with this justification when I was working a bar and was told there was no practical use for clear ice, and that it was just so the drinks look fancy. I sat and thought about it for a few days, and when I got a tea at my local gas station, I realized that the ice wasn't chilling the bottom.
alcoholic beverages are less dense than water that the ice is made of...
although i suppose the less strong more mixed the drink is, the more likely cloudy ice floats while dense clear ice sinks...
You know, ice itself is less dense than water, it will still float. Which doesn’t really matter because convection distributes heat quickly in a fluid.
@@Linus-nq2opthere is no convection if your ice is floating. And some drinks are less dense than clear ice.
@@AnEnemyAnemone1 wdym? if a liquid cools from the top, there will be convection, as the colder liquid sinks to the ground and displaces the hotter one so it goes up and cools down
@@egwuregwu yeah I think I was sleep deprived when I wrote my comment. my bad lol
Nate unironically thank you sir I've wanted to do this for so long but never thought of using the insulated cup I have....I'm so happy ur a creator on this platform
Happy Belated Birthday Nate. Hope you had an absolutely fantastic day yesterday.
Just a heads up, a lot of those tumblers say not to put them in the freezer. Might mess with the vacuum seal
I've missed seeing you a tkor but I'm happy your still making videos but this time it's what you find interesting.
So nice to see your channel growing
That is very cool, Nate! Never thought to do that before! Clear ice is cool! 🥰😎
If you boil the ice and then place it in an insulated container and then place it in the freezer, the ice will freeze even slower and thus push all air and impurities down even more effectively.
Layering/Laminating works great too.
If you try to buy a clear ice mold for in your freezer they are all directional freezing molds, they normally have a hole in the bottom, this is a well-understood concept in the exotic drink industry
The exotic drink industry?! Wtf are you talking about. 😂
@@Carl_McMelvin wtf are you talking about... Just because you're severely uneducated on the topic probably doesn't warrant your outburst of immaturity
One way I know of is to freeze it very slowly. Someone I know who was a bar tender. He would fill a drink cooler with water, like the big plastic ones you might take with you when going to a beach, and he would let it sit out in the sun to get it nice and moderately warm. Then wrap towels around it then wrap it in sramwrap then set it in his deep freezer. The cooler and all the towels would help insulate it and keep its temperature high but very slowly losing it energy and freezes. Takes like 3 days for it to freeze but boy it is very clear.
This video just reminded me I left some ice to melt a bit over a cutting board in my kitchen prior shapping. They were just ready lol me and my drink thank u 🥃
I own a pressure pot for casting resin and I would imagine that would work because it pulls all bubbles out of liquid resin, so if you freeze the water while under pressure, it may make clear ice.
So I've heard that agitating the water while it freezes works wonders, I've also heard the super easy way is to take your ice out after a couple of hours, when it's got that thick layer of white that's all the gas and what not on top, and gently pour the rest into another mould to finish freezing. I haven't done either myself, just shit I've heard from science teachers and bartenders
directional freezing! that's so cool!
Thanks, Nate! :D
I think this is the only/best consistent way of doing this. For larger quantities try one of those old Coleman style coolers, take the lid part off and bam. You can cut down the block into strips or cubes. I do this for special occasions and its a good conversation starter I guess
Thanks you NFTI for this knowledge😎
It's kinda funny to hear music you know from somwhere else in videos. Like this music also being used in Dropout (formerly CollegeHumor)'s 'dirty laundry'...
The white haze in ice is not only because of impurities, it’s because ice expands while freezing, so when the outside is already frozen solid and the water in the center freezes, it expands and produces cracks.
To make clear ice without bubbles, you can try the following methods:
1. Purified Water: Start with purified or distilled water, as it contains fewer impurities and minerals that can contribute to bubble formation. Avoid using tap water, as it often contains dissolved gases and impurities that can create bubbles in the ice.
2. Boiling Water: Boil the water before freezing it. This helps release any dissolved gases that may be present, reducing the chances of bubbles forming in the ice.
3. Slow Freezing: Allow the water to freeze slowly. One way to achieve this is by using an insulated cooler or an ice mold with an insulated layer. Slow freezing helps the ice form more evenly, reducing the likelihood of trapped air bubbles.
4. Directional Freezing: Set up a container with a barrier, such as a divider or cover, to encourage directional freezing. This means that the ice freezes from one side to the other, allowing trapped air and impurities to escape from the opposite side. This technique can help produce clearer ice with fewer bubbles.
5. Distilled Water Spray: As the water starts to freeze, you can periodically spray a fine mist of distilled water over the partially frozen surface. This can help remove any remaining impurities or bubbles on the surface, resulting in clearer ice.
6. Ice Ball Molds: If you're looking to make clear ice spheres, specialized ice ball molds can be used. These molds usually have a top and bottom section that allow for directional freezing, resulting in clearer ice spheres with minimal bubbles.
It's important to note that achieving completely clear ice without any bubbles can be challenging. Even with these techniques, it's possible to have some minor imperfections or trapped air. However, following these methods should help you achieve clearer ice compared to regular ice cubes.
I use an igloo cooler. Take top off, pour your filtered water in there. Put in freezer. When it’s almost done, take out flip upside down and you have a block of ice which 3/4 is clear. Cut to order voila. More to it than that but you’ll get it as you try it.
ro/di removes the impurities. and the slow output reduces the bubbles.
Fun fact: this is a DIY version of how pure silicon blocks for making chips are made.
I love seeing you making content like this again 😊❤❤ are you planning on streaming any time soon? I'd love to support you
You made that make so much sense.
NAAATE DUUUUDE. Not only do you share a cool name like my son, but your pretty cool too.👍Thanks for hanging in and still creating content for us. Science is important and so is tryin’stuff. Keep Sciencing.😊
i had a time tested method, use a big rectangle plastic container. time it for full freezing. let say 18 hours. so you take it out in 16 hours and smash the ice which is 90% frozen. the cloudy part hasn't yet formed, remove excess water. put it back in freezer. you have lotsa clear ice.
Continuously keep a flowing layer of water over an ice table will also do the job. Maybe not the easy way for doing it at Home.
We tested that with a Yeti tumbler and the ice was completely cloudy. The whole thing.
Deserves a like
or use a food grade silicone mold. punch 5 mm holes in the botom, then put it in an insolated cooler box
I want clear ice now
Boiling helps, cause it freezes faster
Why do some ice cubes grow spikes in your freezer? Only one spike will appear growing out of the top of the ice cube!
I need to start watching Buffy again
Ice expands as it freezes, and ice cubes freeze from the outside in, so since the sides freeze first, they all push at the water in the middle, raising the water level in the middle higher and higher while the sides freeze further and further in, until you're left with a spike in the middle where the water level was forced the highest
That's just speculation though
I was going to say cooler method but this seems even easier thanks man 👍🏻
Or you can use an ultrasonic cleaner meant for glasses / jewelry / small parts, put it in the freezer and the whole block will be clear. Given the unit doesn't malfunction due to low temperatures, Maybe freeze at a few degrees under freezing point. Though would haft to bypass the timer but the unit probably wont overheat due to being in the freezer. The ultrasonic waves create micro implosions releasing the air in the water.
Most large scale factories, and research centers use pumps that move the water around 👍
I've done this before just using a bottle of water and a koozi. I had to cut the bottle after the water was frozen but the plastic is so thin it doesn't take much effort.
Sounds like a lot of effort. I just go to this dude down the street who sells clear ice for super cheap! High quality stuff to boot!
I once heard that in order to get clear ice, you need to boil the water first before freezing it.
Didn't work.
I was 12
Did this recently when it reached -50C with a cooler on the deck.
It is true that slow freeze and top bottom makes a difference. I have a new LG freezer with "craft ice" and it does an okay job if in slow mode with RO water.
Breaking the ice out of a metal cup,… Respekt !! Really no words😂
Check out Richard Bocatto in NYC. His company makes most of the clear cocktail ice cubes used in high-end places in NY.
most of the makers of the insulated cups state do not put in the freezer.
you can also do this by freezing it very slowly usually around 30 degrees for 15 to 20 days
15 to 20 days? 😂😂😂😂😂
Would it work if you put a metal case, possibly with walls that are slightly incluned to the outside to get the ice out afterwards, on top of an array of peltier elements that are mounted themselfes to a giant heat sink... Maybe putting this thing completely into a fridge to help with the temperature? Freezing would only be done from the bottom upwards...
Hope I described my thoughts well enough... 😅
I honestly never wondered about this, but I am glad I now know.
What happens when you put a pressure chamber filled with a bit of water in a freezer? I used to watch someone who used a pressure chamber to compress bubbles in resin to get clear castings, which gave me this idea.
Vibration works wonders on ice
There's a chance the others can work, but it's pretty low.
Basically less nucleation points.
I think it helps just often enough to keep it being spread as a viable method.
I heard that vibrating the water while it's freezing works
Ice is nice
my fridge does it naturally it drips water so i have a plastic thing to catch it
It would have been cool to have that one in a very large glass for a drink xD! It would probably fit in my IKEA glasses!
Yes.
What I’ve heard is that usually it’s a type of mold, or a very large chunk of ice with all the not-clear-ice chipped off
I work in the service industry thank you. This is fckn genius
I'm not sure if I agree with the reason. I imagine the reason freezing from 1 surface increases the chance of a single ice crystal forming rather than many ice crystals that crash into each other and aren't aligned causing random scattering of light. However, that's just a guess. Though, I think if it was something to do with impurities then wouldn't the distilled water would work?
If I remember correctly in Mythbusters they used a vibrating thing to make ice clear and I think that worked.
Distilled water on its own does in fact freeze clear, boiling it probably makes it impure or something.
It's magic. It's how they turn a dollar worth of liquor into a $18 drink.
I just took my ice tray out early
They were super clear
I could hear it when he was carving the ice
thanks, Nate!
I think Eater has a video up on the guy who sells the most clear ice in New York the way he does it is in his tub he runs water through a pump and the water freezes from the bottom up once there is like half inch of water left he vaccums it out and then left with big block of clear ice
I've noticed clear ice in ice trays alot, I guess it freezes from the top down and pushes the air out the sides.
hello!
it is interesting.
can you adjust the sound of your shorts? it is very likely that you are way too lacking of volume for all your videos, but i am not sure. i am only certain about this one.
The easiest way is slow, freezing this allows any air pockets to escape
Awesome 👏
Directional freezing is the only way unless you get a machine to do it for you
Grants legacy continues...
Commenting for the algorithm
Could you put a thin cup with water on a cold spot and freeze it from the bottom up and get a huge clear ice?
just freezing RO water worked for me lol
Best way I've found to cut it is a large serrated knife, like a bread knife.
Also it longer to melt than ice with the impurities
Vibration do be key
He's wrong. Here's another way: If you put soft water from your home's water softener into your ice maker, you get crystal clear ice also.
Tried this so many different ways and it doesn't work. Tried it with bowls, cups, coolers, distilled water, tap water, filtered water, cold water, hot water, bottled water. Always cloudy. Always cloudy.
Make the audio little better...
"Only 1 way" --> directional freezing, nice
Im not sure if you're supposed to put insulated tumblers like that in the freezer. I mean every single yeti cup ive been given for the past 17 Christmases have had some sort of warning about putting them in the fridge.
Could you line the insulated cup with something?
This is my job
he's completely right
BFDI ice cube real Life
Bro looks like he is gonna eat it
Here comes clear ice cube machine can
I'd like to see you get back to making things loke you did back when grant was with us. 😊
now i know for sure macdonalds does NOT go through the efforet to put a million little tumblers in the freezer to make their perfect crunchy ice, so how do they do it????
his fingers being red from holding the ice hurts my fingers 🥲
Ok so what if you did it upside down? If it's freezing from the top down, the impurities are basically getting pushed down right? They get trapped, and eventually the remaining water is saturated, so that the water below won't accept more dissolved gasses. That's probably why the bottom part is cloudy.
If you do it from the bottom up though, perhaps you can leave an air gap at the top, for the dissolved gasses to be pushed out into. Of course, you can't just turn the bottle upside down, so you'll need something for a lid that is not insulating.
Hmm, the draft angles (the taper that allows the ice to come out) would be a problem though. As it expands, the ice will be pushed out the bottom, pushing the lid off. If they were reversed, it would trap the ice.
So here's what you need: A water bottle where the sides are insulated but the bottom isn't, and an insulated lid for the top (or something insulating you can just place on top). I doubt these would be easy to find though, so you would probably have to make your own. This could be done pretty simply by just making (or buying) a koozie that will fit the bottle and then putting it on upside down. (But Walmart sells craft foam that you could probably make one out of, with a lot more layers than the typical koozie, for better insulation.)
Well, now that I've figured out a really easy way to to do this, maybe _I'll_ try it! I could even do it with a basic tapered stainless steel cup, if I make my own insulating koozie...
Oh, oh, oh! And with a stainless steel cup, I can just run warm water over the outside to get the ice out, after removing the insulating cover!
Distilled water works for me