 Well, anyway, how many of you know League of Legends? Okay, so at least you know it Well, then if you've ever wanted to have a weapon like that a weapon like this Built in real life, then you've certainly come to the right tent today Combustor over here is has embarked on a journey to craft a weapon like this and he's going to share his experiences with us So please all welcome combustor So yes There's a few things I want to go through today I Set us up like a small talk about how you can use Fabricate crystals you can apply them you can make things with them and It's like a sort of instructional course course on how to do those things You can make small things you can make big things So what's what's the plan? We have a small introduction of how crystallization works and how to do that and How to make good use of it and when we've done with the whole technique park Go through the entire building part of the hammer over here After that there's time for questions and Because there's It's quite difficult to see all the details from the room So afterwards you can come over here and see all the things up close and we can talk about it Crystallization It's a It's an interesting part of chemistry. You don't usually see that in regular textbooks basically what happens is that you have to do one thing that's only partially soluble so You have water usually and you have something else That only dissolves for a bit in water until it seems like man, there's not enough space for me So I go go back out of the water And that's the way how crystals grow in real life. It's how also how Stalactite stalagmites grow in caves. You have limestone being dissolved in water Then it drops down and water evaporates for a bit and the remaining limestone things you have to go somewhere and Then you get these drops and pillars The thing about crystals is that some material likes to be will tend to molecules have shapes basically and what they do is they tend to find a nice way to be lying next to each other and The consequence of that is that if you have one source molecule and It will generate one shape that's specific to a molecule, but some other molecule will make a different shape Yeah, so if we want to make crystals, you know, we have to find some solution put Put things in there and then try to get it back out solution The way we do that is we have There is a certain amount of solid available But we can change the ratios to which that solids can be in in the fluid What we the thing about that is the moment you increase the temperature for instance of water then you can Dissolve more things in that like if you have sugar then it won't dissolve in cold water, but it will dissolve in hot water So if we increase the temperature we increase the amount of room for Sugar or anything else that can be in the water and if we later go cool it down What we in the result is is that there is not enough space left and then it will become solid again and Usually it will form crystals at the same time This is also the way they usually make the real big fake gemstones like rubies and sapphires as they use in lasers They and that needs to be really hot and then they dip one cold element into a center of a big hot pan and At that point the temperature is too low for all the stuff to remain in there. So it will Form a crystal at the top of that bike and then they just pull it out and you get one long rod of ruby Luring a temperature won't only work so far if you make something like that and you let it cool off and At the end it will be cold and it won't do anything anymore And so if you have something based on water You want to do that for a while longer. So if you put that somewhere in in sunlight or something The water will start evaporating, but not things that have a way higher boiling point or melting point. So sugar does not What happens the water evaporates and then the amount of water becomes too low for the sugar and the process continues If you use that method basically the process is a lot small It takes a lot more time But if you give it more time it gives also gives the elements in the water more time to Find their preferred position So if you want large crystals You have to wait a long time if you want a lot of small crystals You just bump up the temperature and cool it really quickly and then You get much smaller things So how do you do that in your kitchen? Everyone can get sugar Everyone can get water and probably everyone has a stove The ratio for sugar to water is normally 3 to 1 so you find yourself a cup of water you put it in and then you Add three cups of sugar to it and then you boil the whole stuff And at some point every every bit of sugar in there will be dissolved That's your basic solution then at that point you can take it off the furnace and Put it somewhere and then you will grow crystals on your pan It's probably not the best thing you want so you can do other you put other things in there If you want to clean your pan afterwards, it's easy You just put put hot water from the tap back in and you keep stirring it and at some point It'll just dissolve and go down the sink. So that's Pretty easy to clean up afterwards So no dangerous substances involved One other thing though is that if you have that much sugar in water the boiling points of water will also go up above 100 degrees so and The result is quite quite sticky. So if you do put on yourself you are in quite a bit of trouble So be careful with that Yeah, like I said if you just make the solution in a pen you let it cool down the crystals will grow on the pan So then the next thing is you have to put something else in that you want to grow your crystals on You can use regular sticks then you make sugar crisps on a stick the tongue kind that you see They sell those things for in your cup of tea What people usually do is a piece of rope that also works But taking that to the next step is if you want to make Gem-like objects like You know we saw a bunch of rings in the first slide You can make them just by printing a ring or Fabricating it from something else and then just dipping the top end into the solution And if you let it stay there for a while, then the crystals will also grow on here And on the cup and everywhere else, but you want them on here in the end. So if you dip it too deep then it will Stick to everything else that's in connection so you have to be a Bit careful about that A few other things to take care of is like if you print something with a really smooth surface You can just Take it off at any time again That's probably not what you want. So if you want something that will stick to an object you either have to Bind it in some way or you have to 3D imprint your object with a rough texture on top So that the sugar has more surface area to connect to The thing is with Dropping things upside down into a sugar solution Is that you your rough area might actually contain air and not water So you have to make sure that the deepest points actually connected to the outside world Then it will automatically What you can also do is actually use a bit of of your molten sugar and first pour it on top so that you fill the holes and then quickly put it inside and then The same thing will happen basically What I did with these ones I put with these rings I put them on on a string from the top But 3d point plastic will basically just float on the on the material itself So if you have something that is stable, you can just put it on top leave it there And you can go away and you don't have to worry about shaking it any other time and Crystals will grow exactly where you plan to have them Like I said if you if you grow a lot of crystals then they will stick to the pan They will stick to whatever container you dropped them in and At they also will generate basically at the top of the solution So if you leave it for too long the top area it starts to evaporate There will be a sugar to go away, and it will actually solidify the top You can you can pull it out once in a while. It's it's actually good to Poke a few holes in there so that actually more water can evaporate after that Otherwise to all get stuck in the process But at the end you're left with quite a bit of sugar in your container and very little sugar on your objects So what you can do is There's two things you can You can basically take everything out and put it back in the pan as raw sugar You have to be aware that if you do that the sugar already can contain some water and That's the ratio is no longer want one cup of water to three cups of sugar The normal way to find that out is just put some water in the pan and then Keep adding the sugar until There will be a layer of grease on the bottom. That's basically undissolved sugar and then you know that you've Reached your correct ratio What you can also do is if you have a lot of spare crystals you can remove them from your container and And you can store them later thing is if you grow something it will grow in whatever way It feels like you have pretty much little control over that So if you have just some spare crystals Laying around then you can take up this thing looks nice. Let's just glue it somewhere else and Then you can have exactly the ring with exact with quite more of the shape that you want one thing to note is well if you you have and you get large chunks of solids sugar out of this and If you try to dissolve that soon you have to leave its cooking for quite a while and One of the other problems of sugar is that at some point it will not dissolve it will also start caramelizing and at that point it's kind of waste material so to prevent that is you probably want to grind it down in some way or Dissolve only a little bit of it and then add fresh sugar at the end so that you don't have to wait all the time for it to actually dissolve The other thing you can do is you can color your solution There's a lot of things you can pour in One of the things to be aware of is that they actually use the crystallization in the past to purify materials So if you have water and our sugar in it and there's also some other things in it The sugar will try to go away, but it will try and also leave all the other things behind So if you die something then in general most of the die will stay behind in the water and not Contained within the sugar so you Might need to overdo that and even though your water looks like the good color. It will be pretty pill when it comes out like everything on here is Dying green, but it's almost white when you look at it from a distance It's still noticeable, but that's one of the things you figure out some point Things you can do you can get yourself some food dice you can find yourself some not an edible dice You can also You can use also make some of your own die if you Cook particularly colorful vegetables for instance then you can you can eat for it And then you can also keep the remains and stored for later and then you have Red dye which is actually pretty strong a strongly colored What also works is that if you have your your leftover solution you have some crystals part of it, but you also have some Liquid fraction left of it, and then you can basically reuse that and replenish it with existing materials That means you also don't need to always need to have to regenerate your solution even if even though it's tired or not so yes You have leftover gems after each iteration you can What often happens is that you get chunks like this the bottom of pot and you can't do much with that basically Often, but it will also grow on the sides where it doesn't go down to the bottom Then you get much get very large crystals, and they are pretty much separated So if you get them out of the pot afterwards You can then later Use that to decorate specific things and specific locations Basically like you would use a process gem in into a normal ring Once you do that you can glue that with normal means or you can put braces around that like they do with real gems one of the other things you can actually do is Dip the crystal back in the solution or dip the ring back in the crystal in the solution and then stick them together and then the bit of solution that's between them will eventually dry out and Bind to pretty firmly together One of the other things that happens is that crystals will grow on crystals and they will grow out of the way And what's what particularly happened in this case Is that if you If you look at it, they and these parts are printed in in quarters I don't have a container large enough to put it entirely in so I had to put it in one One square at a time What happens at the end is that the crystals will not only grow outwards. They'll we can also grow that way in that way Which means you can't connect the parts at the end What you can do about that What you can do about that is basically we first process if you put it back in water then the crystals will eventually dissolve even though it's cold water You have to be So if you want to trim an edge you just find a place to lift it up to in the container with water You fill it up to the level you want And then you come back like one day later and the edges pretty much trimmed to where you want You have to be careful with that Sugar crystals like to take up a lot of water and then they will They will fall apart afterwards. So if you drop it to exactly the same level It will soak up the water to there and a whole bunch of crystals above it and it will Basically trim off more than what the water level actually says So far for production things Now I'm going to do some 3d things The hammer over here is basically copy of the hammer they used to have in League of Legends, especially the Terricks hammer And this is my replica and of course there are quite a few things that have been done besides crystallization stuff So if you want to make large props like this, there's a few other things that I want to go through The whole thing is basically screwed together There are a lot of certainly a lot of parts in the bottom end And each of them is pretty small and has to fit on a 3d printer bed I've screwed everything together in the end or at least for the bottom part I get to the top part later You have to be thing is screws are nice, but if you give them a bit of space they will come loose and You don't want to it don't want your prop to fall apart like halfway into the event Last time I came back home in the world I had like four or five loose screws inside, but that's not the problem with the design Every every side of the hammer consists of two rings each ring is eight parts and the two rings are connected by by a fraction of that So every hole in the in the top and the sides actually connects to a different part so if you lose one screw there then The connection still remains through all the other parts That does leave for quite a bit of Quite a bit of screws to assemble in pretty confined area and one of the things I did for that in the end was I Made an entire basically a very small and free wrench to That was the same size of the part itself so that you can actually Turn it in the in the area that it was given instead of having those large things that Do not really work in its place Basically what I wanted is that you couldn't see any mounting material at the outside So everything is screwed from From the inside, but at some point you have to close the area What I did is the inner ring this has Has a pair of dovetails those can carry a lot of weight and and tension and And they basically connected the closing parts to the to the body Inside this thing is what you can't see. There's basically a broomstick and That goes through both ends and then it's screwed in Through these holes with a pair of big screws And outsiders another ring where you can place a cover on top That works like this And There's a hole with nox nooks and if you put it in you can twist it and If you make that tight enough then it will also won't fall off again If you have a lot of them then at some point some a few will strain So Okay, so there's So these covered till and and all the way up to here and what happens at the end is that To prevent them from screwing back There's an there's another screw at the end over here so that this one is fixed There's a screw at the bottom that's fixed and these two prevent all the intermediate part from rotating and then screwing themselves Basically, I'm templated these things so I can change the inner diameter the outer diameter and Make sure they fit exactly the broomstick that's that's holding them The problem is is that at the end you have pair of joints that are That you have to add something and in particular the Terrex hammer has has big Big triangular gem at the end. That's this one but to get to print this in in separate parts and you have to do it in several steps Now to wait So basically it's it's four parts Two halves of a diamond and two containing parts To keep them together and not fall off because These junctions were pretty fine if they're entirely round, but if you make them half round, I noticed that they have quite a lot of slack between them so What I had to do is to make sure that these parts also connect to each other, so there's some nooks over here These fit basically fit in here. They are counterpart of each other and At the end I also made a double ring at the top so that you have basically a full ring worth of connectivity to the rest of the hammer I actually actually had to redesign this part a few times before because Yeah, actually it actually fell off once and then and then it broke the pieces So basically that was What I had intended to to tell everyone There's a link here. You can use that to download all the files. They are available as stls and they are available as Open scat files, so you can actually modify the dimensions of everything you want You can also download the model for these rings over here and of course some special credits to the people that help me out Harmless is a wonderful one from Ultimaker that helped me a lot with the 3d printer stuff Danzig is the one that actually brought me to the idea of doing things and Timba and fish are two good friends from the hacker space that Also added a bit of work so There's probably quite a few things that you might have wanted to know that I didn't cover so far we have Have decent amount of time left. So please do ask Yeah, so we have plenty of time for questions. So please line up at the microphone and ask I can't believe it was that obvious Hello You made crystals for your hammer, but Sorry, since it's sugar, it's probably not very very hard material. So is there a way you can Protect it against damaging if you want to use it for the long term or it's actually really strong the crystal Yeah, actually what happens is if you take like a cube of sugar It's card outside. I think Actually, if you take a regular cube of sugar like you put in your tea day and those are basically very tiny sugar crystals that have been glued together Probably with their own material The crystals on here are like one up to one or two centimeters in size Crystals themselves don't like to fall apart. They break where they join with other crystals So it is pretty sturdy One thing that did happen It's also the reason why I put it this side up front is that at some point one person did actually trip over the thing It's a bit of a shame. So there's a hole over here There's a little thing you can do about that because then what happens is that You have a boundary between the mounting material of the bound between a bunch of crystals bunch of other crystals So it forms a breaking line and talk just come off as a chunk Any more questions? Well, if there are no more questions You are invited to come up and have a look at what he's what pastures built for us up close And otherwise, let's give him a nice round of applause for his amazing talk I've Yeah, I added photos of basically all the things in the slides, but they're pretty small way too small to actually get good on camera so they're up here and If you're really interested, you might even be able to take sample home if you want