Alright, so I'm going to talk about an introduction to Kirigami, which is probably as relevant for the system contributors, but very interesting for new computers and app writers. So I'm going to talk about an introduction to Kirigami. First of all, I want to talk about what Kirigami actually is and what it is not. Then I want to talk about when you should use Kirigami and also when you should not use it. And then I will get into more details, what it actually offers, which is mostly going to talk about the page access that it has, then the various way actions work in Kirigami, and then some missed components that offers that help you create applications.  Okay, first, what is Kirigami? Kirigami is a toolkit for creating conversion applications. It is based on Qt Quick Controls 2 and it is a Tier 1 KDE framework, which means it has no other dependencies on KDE things. It only depends on extra CMake modules, which is like a build time only dependency and Qt. And since it's a KDE framework, it means it's released once a month and it offers API stability guarantees, which makes it nice to develop. And also in a way, it's a tool that helps KDE applications maintain a consistent look and feel, which is one of the goals that KDE set itself to foster a consistency between applications. And if every app uses Kirigami components, then it will magically be consistent. And when we change the implementation, then everyone benefits from it. What Kirigami is not, those are a few things that I've kept reading on the Internet, where I want to stress that those are not true. It is not a replacement for QML or Quick Controls 2. It builds on top of it and extends it with more higher level components. It is also not a mobile-only toolkit. Like the whole idea of Kirigami is to create applications that work great both on the desktop and on mobile and on things in between like tablets. It's also not the only way to create apps that run on Plasma Mobile. You can create great apps for Plasma Mobile with pure Quick Controls alone. You can also create apps with GTK or Lip-Handy and Lip-Handy, for example. They would run on Plasma Mobile 2, maybe not perfect, but that's something that needs to be fixed. It's also not tied to Plasma, desktop or mobile in any way. So apps written with Kirigami can run on other desktop environments and operating systems as well. For example, we have a lot of them running on Android. There's no reason why they wouldn't run on Windows or Mac OS, for example. And it's also not a style or a theme because Kirigami can work in fear of any Quick Control style. Okay, I think I skipped the slide on when you should use Kirigami, which is when you're writing an application with QML that should run on both desktop and mobile systems. And if you want to follow the KDE Human Interface Guidelines. Kirigami is not the right thing for you when you're not using Qt or not using QML, obviously. And it also may not suit your personal design needs for your application because it follows the KDE Human Interface Guidelines and thus has certain opinions on how things should look and behave. You may disagree with that and have other ideas for your application and if that's the case, that's perfectly fine. That just means that Kirigami in general or just some parts of Kirigami may not be the right thing for you. Kirigami can roughly be divided in two different things. One of them is the PageStack system that pretty much defines the overall application layout. And then there are random components that you can use in your application that will make them or will make easy to make them convergent. And the cool thing is that even if you don't use the general PageStack structure for your application for some reason, you can still make use of those other components in your app. So the PageStack is like the central element that defines the application structure. It consists of pages that you can push on a kind of data structure and also pop them from there. And those pages are kind of like screens where you go from one screen to another and then maybe back. So if you take for example a chat application, we usually have a list of ongoing conversations. And if you click on this list, then a new page gets pushed on the stack that shows the actual conversation. And the way they are displayed automatically adapts to the available space and thus to your form factor. So for example on mobile, there's only one page shown at a time. But on the desktop, it could be multiple. But to make it a bit more clear, let's check some code. So this is the most simple possible application here. Origami is just an empty application window. Now the most important line here is import.kde.ciriami which includes Origami in your Mellop so you can make use of it. And we start that it's just an empty application window. So now we have a first example of an actually made use of a page stack here. So every page has a title. In this case, it's my page. And then it has some content.  And closely like this, the base type for each page is origami.page. As a title set, and everything I put in here goes into the content of the page. And we put this into a component. And on the application window, we tell the window page should show the startup, which is sectored in the page property, which is set to the main page on it. Now, a single page is a bit bring. So let's put some other religious onto it. So here we would find a second page, a title of the content. And let's put a button on our first page. Can you assume your code please? So now we have a button here. And once we press that, the second page appears. And when we press those button here, the page disappears again. But otherwise, what we'll do is click the button for page stack.push with the second page component. And on the click button, that one clicked, we hit the page at the top to remove the page. So you see now we have two pages visible at the time. If I make a window monarrow, then the first page will disappear. But we can still between those two by clicking. Or as you see, we have now one component for each page. Which is a bit weird because we then would need to have all of our pages defined in one file, which is in general something we want to avoid. So what now would be a good step is moving out one of those pages into a second page. Which is done in the second page.qml file. You can see that the same content from before minus the component thing. And if you now open up external page.qml, we see that now instead of defining the whole page inside of the component thing, we can just make a new second page component, which is the same end result. But there's one way to make that even more simple, which is something I would have done live normally. But I will just push an updated commit. If you now go to the repository and just show the latest commit, then you will see my changes. Then what I did was replace this whole component thing at the bottom. And in the onClicked handler, just call q.resolve URL with the file name where my second page is actually defined. OK, so something we often want to do is pass some data from the first page to the second page. So for example, if we go back to our chat example, then we don't want to have, then we need a way to tell the second page, which chat it should display. And if you go to the page with properties.qml, that would be great. There we see how we can push properties from one page to another. Works like that. On our second page, we have a property label defined. And yeah, and then in line 18, we put another argument to the page.push call, which is basically a map of key value pairs that we passed there. So we set label to cut here from first page. And if you now run qml scene page with properties and press the button, we see that the text got passed from the first page to the second page. Yeah, I think that's all for the page stack. Then let's get back to the slides. So the next thing I'm going to talk about is actions. Actions itself are an abstraction over, this is something you can click or invoke or anything like that. You can think of it similar to a QAction object. It has a label or text. It has some icon. And it has a signal that gets emitted when you click on this action. In Kirigami, we have three different kinds of actions. First, there's global actions. Those are actions that are pretty much always relevant, no matter where in your application you are. So for example, going back to our chat app example, that would be settings, for example. Then we have page-specific actions. Those actions are only relevant on this particular page. We're currently on. And then there's context actions, which are somewhat similar to the page actions, but they are a bit less important and more secondary. So for example, in a chat app, a typical page action would be when you're on the list of chats, then starting a new conversation with someone. The way it works in Kirigami is we define the actions that we have that we want to have. And then implementation takes care of picking the right presentation depending on our form factor. So let's see some code for that. So first example is global actions. For global actions to work, we need to define a global drawer object. The global drawer is a drawer that appears on the left side of our application. We do that by creating a kirigami.globalDRAW object and assign that to the global drawer property of the application window. Inside the global drawer, there is an action property that is a list of actions that are going to be displayed. And each element is a kirigami.action, which has a text, an icon, and the signal handler that gets triggered when the action is triggered. So if you now run QMLC on that file, then you see on the top left corner, there is a handle that opens the global drawer, which contains our actions. And when you click on them, you see stuff gets printed on console. So this is the way it works on the desktop by default. So thank you. So now you see the handler thing that was on the top left at first is now on the bottom left, which makes it more mobile-friendly. But the actions are the same thing. All right, what you also can do is make nested actions, which then work kind of like a traditional menu that you see on the desktop. So here you see, we still have the two actions that we had before, the open and save. But now we also have a new action, which itself contains actions like a new text file or a new HTML file. And when you run this now, then you will see how that looks. OK, so on mobile, this is fine, I guess. On the desktop, you may think that having this kind of drawer thing that you need to pull out is a bit weird. And I would agree with that. So the global drawer offers a way for you to automatically turn the action or the menu you define into a hamburger menu thing when you're on the desktop. And you can do that by setting the isMenu property to true, as simple as that. And when you run the same thing on mobile, then you will see that nothing has changed. So that's an example of ways in which Kirikami adapts according to the form factor. And here is the application developer. Don't need to worry about that. So you may wonder now why this behavior is not default. And you need to opt in to do that. And that is because you can not only put actions into your drawer, you can put arbitrary controls in there. And that's what the fourth example shows. It still has these actions. But it also has a label set as top content, which will show some kind of title in the drawer. And if we would set the isMenu property to true now, then this label would get lost. And that's the reason why this is not on by default. So the way the global drawer is used in Kirikami apps and practice follows usually one of two ways. First one is the drawer acts as a menu, as we've seen before. But there are also use cases where this drawer works more like a sidebar on the desktop. And that's what the fifth example shows. Here we have the inline 12 and 13. We have modal and handle visible set to visible when not widescreen. Widescreen is a property that tells you if your window is wider in a certain threshold. And if you run this example, now we see that the drawer is turning into a permanently open sidebar thing. But if you make the window very narrow now, then it still turns. And there wouldn't be enough space anymore for the sidebar. It turns back into a drawer. And the mobile it also stays a drawer. So a user application developer has have the choice of either making it automatically into a menu or into a sidebar or by default, keep it as a drawer on the desktop. But that's not something I would recommend. OK, the next example shows the page action system. Here we don't have a drawer anymore, but instead we have three actions defined on our page itself. In Kirigami, there's place for three page actions. Most important one, or most central one, is the main action. But then there's also a left action and the right action. You don't need to use all of them. You can define none of them. You can just define main. You can just define left. And the way it works on the desktop is they get turned into a toolbar on the top, which you can see by running the example. So first we have the main action, which is edit. And then we have delete and share, which act like pretty much a traditional desktop toolbar. But on the phone, this would be not reachable at all. You cannot reach the type of your phone comfortably. That's why when you run the thing on mobile, the actions are displayed at the bottom where you can easily reach them. And now you also see where this left and right comes from. And the main action is kind of this floating action button in the middle. The next example shows context actions. Context actions are somewhat secondary. So you define them by assigning or putting them into the list and assign it to actions.contextual actions. And the way they behave on the desktop is by default, they are put to make them properly work on the desktop. You need to do one extra line, line 10. You need to set a context drawer on your application window. And now when you run the example, you see not much has changed at the moment in the presentation. But if you make the window more narrow, you will see that if there's not enough space, they get put into this overflow menu. The way it works is the tool bar is page actions are always put into the tool bar. And then when there are context actions and there is enough space, they get put into the tool bar as well. But if there's not enough space for all of them, the rest of them gets put into this overflow menu thing. And a mobile, the whole thing behaves different as well. So here we have similar to the global drawer on the left, we have a new drawer on the right that shows the actions in there. All right, so much about actions. So let's get back to the presentation. So next we have various components that are useful when creating applications. And you can use them independently from the PageStack mechanism. Our first one is kirigami.icon, which is basically it's just an icon that you can either load from your icon theme or from a QRC file or from any other file. Then we have several useful components when dealing with lists and how to make them more consistent and usable on the phone. I do have a code example for that as well, but we can show that later. Then we also have a CardsListView, which is somewhat similar to a ListView with the difference that lists are only suitable for a small amount of content, like one line of text and maybe an icon, but cards are larger and can display more content. Then there is FormLayout, which is extensively used in the system settings on the desktop. So this basically allows you to define controls like checkboxes or have controls like checkboxes, text fields, and have labels assigned to them automatically, and it's all laid out in a consistent way. Then also interesting is kirigami units. This defines some units that are useful for when you're dealing with building custom UIs. It defines things like a unit for paddings that makes the paddings in the application and in all key applications consistent, and it also contains units for animation speeds and times that are backed up by the animation slider settings in Plasma, and it defines a theme of properties that you can use to not hardcore colors in your UI, so they can automatically adapt to the current theme. So this is just a very plain ListView with 20 items, and as delegate, it uses a kirigami basic list item. Basic list item is an item that has one line of text and it has an icon, and this is such a common pattern that we have a component to do this, which then automatically applies a nice styling and makes it consistent throughout the KDE applications. The second example shows a list that has individual sections, and for this we have, so the model is not really interesting. It's just a few elements that are divided into sections. As a delegate, we have a basic list item again, and here as a section delegate, we have this list section header component that is just convenience for creating a nice-looking section header that's consistent with other KDE applications. You can see that everywhere in system settings, for example. And the third thing I want to show you is the swipe list item, which is a list item that contains actions that you can invoke, so a common example would be removing this item. So here we don't have the convenience of basic list items, so we need to define a content item ourselves. In this case, it's a simple label, and then we define a number of actions. So in this case, we have delete, and we have info. And here the presentation very much depends on whether you're on the desktop or on the phone. So here we see that when you hover over an element, you see the actions are selectable. And then when you click on them, stuff happens. There is also a way to make them always show, not only on hover. And on mobile, the whole thing looks very much different. Here you actually have those crack handles, and then you can use your finger to swipe them up, which exposes the actions, and then you can click on them. OK, let's get back to the presentation. So now a few resources for working with Kirikami. First of all, there's the API documentation on api.kd.org. It's not particularly great, so any feedback on how to improve that is very welcome. Box attract on the KDE-Buxilla instance. We also have a showcase application for what Kirikami can do, and also how to do that. That is Kirikami Gallery, which is an application that has all the features Kirikami has stuff inside and is a great reference for what it can do. And it's always worth checking out how to do it. The source code is not yet migrated to GitLab, so it's still available. It's still hosted on the old repository. And if you have any questions or problems, suggestions about Kirikami, then you can reach the developers in the Kirikami Room on Matrix. So that is it. Do you have any questions? Question is, can Kirikami work with over queued bindings like Rust, C-sharp, et cetera? So for the most part, Kirikami is only used from QML. So it doesn't really touch any C++, and thus it should work with anything that has QML support. So I've successfully used it with Python, for example. What's the recommended idiom when you need more than three page actions? Well, it's a clear sign that your application is too complicated and should be simpler. No, just kidding. Yeah, like Jonas said, the context drawer is the right thing there. I think the Kirikami source code contains a few examples. I am not sure what they do exactly, but they might be more suitable for what you're looking for. I think there is some tool that allows you to create QML in a way similar to the traditional Q designer, but I don't think anyone uses it, and people just write it by hand. I don't think many people use those design things. Pretty much all the people I know just write their QML by hand, which is fine because back in the days when you're dealing with widgets and UI files, you have these giant XML files that are super complicated. And there it's nice to have a visual tool to edit them, but QML is so concise and easy to write that you, in my opinion, don't need anything that saves you from that.


how to get started by Gary Vaynerchuk.   So I wanna share with you a quick montage of Gary Vaynerchuk talking about getting started and you can see what you can do to get started by just listening to this. I think you're gonna love it. And by the way, if you're new to the channel, don't forget, subscribe, turn on notifications, turn on all notifications. And at the end of this, I wanna give you a course to help you get started. It's a $97 E-commerce course, absolutely free. You don't need a credit card or anything. It's just click and learn. Let's go ahead and get started with Gary Vay. Very high in the air, back from London, headed to New York City. Sorry. To play a video. So many of you are stuck and can't start. I broke it down into that what, how and where, right? WHW, right? Like, what are you gonna talk about? But the way all of you need to do this and how you actually start is by doing. You haven't done anything yet. You know, this whole fake it to you make it brings no value to anybody. You need to make something. And that thing is a manifesto. It's always been obvious to me. It's always been obvious what caused success, what I needed to do, you know. Every time I watched content from the internet or television, watched Oprah the other night, this was watching what I was working.  We took it to all the studios, every single one of them. And nobody wanted it. So what'd you do? So I said, well, I'm not gonna give up now. You're stuck. You haven't started cause you're stuck. I think the fear of using Trump's, the excitement of victory for so many people. So here you go. What, what are you gonna talk about? What do you wanna be known for? Look yourself in the mirror and ask yourself, what do I want to do every day for the rest of my life? Do that. And see what people need to understand is the way we communicate today is so different. And the platforms have been redefined.  You collect smurfs, smurf it up. You can make $70,000 a year talking about the smurfs. Whether that's your mission or where you're at right now. Your truth, manifesto. Tell me what you're thinking about it. If somebody made a video eight years ago that I think fashion should be high, low. I think people should wear expensive stuff and inexpensive stuff in one wardrobe. It would have been like the queen or king of the vision of the fashion industry just by making a video. They think that Facebook, a virus instigrate, it's like Facebook's gonna buy instigrate. Four months later it happens. So I was on Pierce Morgan, this company's 550 days old.  And my opening line is they stole it. And then, I guess last year this time, right? Facebook bought WhatsApp for 18 billion and every article like the next day after the news came out is like, oh, wait a minute.  The how is there's only certain few ways to communicate in the world. Whether this is video form, something extreme. Like just get on a train and go away for a week or something different. You have to break pattern. Whether this is audio form. Sitting here listening to my music list and I'm starting to find a little clarity. Audio being a podcast. You're an outspoken advocate for both hustle and self-awareness. Yes. But if you had to put them in order, self-awareness. Self-awareness is more important than hustle. When you know who you are. Yes, when you know who you are, hustle is sexier. Like it would have been cooler for like the people listening for me to say hustle because it's cooler, right? Heck, you don't even do podcasts. Put the recorder on your phone and just speak your truth. As I sit here right now writing this article or at least memo-ing it because that's how I do it.   So at 40, I've observed a lot. And I can tell you that optimism and positivity is a huge variable. Good morning, Instagram. It's me, Gary. Instead of a motivational quote or some sort of clip, just want to build a camera to face. Just tell you how much I appreciate all of you guys, your attention and your world to me. Set it up on a tripod or have a DRock. It's your nephew or sister. Now give me this. Give me this real quick. The intern is here and some of you guys might remember him or you write it. But the way all of you need to do this and how you actually start is by doing. I create a obnoxious amount of content because of the strategy of how we do it. Don't do anything. Just keep watching. Keep watching my stuff. Keep being entertained by my energy. Keep being inspired.  Like when your strategy is right, you win. And so we have figured out that pillar content creates content underneath it at scale. Everybody welcome to the first hashtag AskGaryVee. I think it's the first one, but I actually do think I tried to do this once before. I feel like I've got the team now in place to actually do this more often. It's macro patients. Macro patients. Deploy patients. You've got to deploy patients. You've got to love the process. What's the ROI of social media? So I look at her and go, what's the ROI of your mother? There's so many people in here that shouldn't be producing video because that is not the best way they communicate. Only a decade ago, if I was speaking here, all I would be talking about is blogging. Yet there are people in this room that are caught up by picture and video communication and they are tremendous writers and they don't realize that blogging or posting on Medium or even my favorite little hack right now. If you're a good writer and you want to build up a profile for your business or for yourself, I actually highly recommend you start blogging inside of Facebook and Instagram. I literally mean writing seven, 15, 25 sentences, three, four, five paragraphs worth of written content within your feeds that people absolutely consume. So that's number one and two. The what and how, right? Like how are you going to do it? And then where? Distribution. That's what you need to figure out next and it's the hardest part for a lot of you. Hardest part is the start, the next hardest part, a lot of things are hard. Hardest start, hard to know what format to do it in, audio written video. And then number three, how do you get people to see it? It all goes down in the DM. The key is providing other people more value. I just don't see people doing it. It blows me away and it is absolutely wonderful and it is absolutely going down on Instagram DM. Influencers where you pay for it. You can pay in Facebook ads, Instagram ads, sponsorship deals, YouTube pre-rolls against people of those interests, fashion, you know, food, wine, sneakers, technology or you reach out to people that have audiences search, hashtags, click them, look at the account then see how you can bring them value, DM them, go in soft, bring value, bring some repeat, two, three, four, five thousand times. So the thing maybe we should do is go up on each side. This guy looks like he's a picture, hey G. Instagram influencers right now today for doers is the probably only behind Facebook ads, the single best arbitrage in marketing. And then you try and then you learn.  There's no report, there's no white paper, there's no modeling mixed metrics that are gonna teach you how that's gonna work. When you're the first explorer, you have to taste the berries and hopefully they're not poisonous.   So what does that mean? That means you should write a medium blog post every week content, podcast, video, written quotes, pictures, and then tactics. What scares me quite a bit is that most of you when you see these logos, you think of a piece of content that you make and you think of those five channels and more as places where you distribute it. Twitter and Facebook are tools. Twitter and Facebook are markers and crayons. They're a fax machine. These are not just distribution channels. These are channels where you have to natively story tell. Facebook, Twitter, YouTube, and Instagram are ABC, NBC, and CBS. And what I've figured out for the last decade is how to make MASH and the In-Griffin Show and ER and Seinfeld.  But I wanna do where you are. I've got all the- What's blocking you? Some, I don't know. Other people's POV? Yes. That's the one, man. If you were to see classic in style, would have guessed Santa Maria Ailes? Yes, that's the thing. Mr. Beastie? Please, take a step back and think about how awesome it actually is. It is imperative that not only do you start thinking about your content strategy on these platforms for your business. Facebook, targeting. I mean, that's it. Like, you can literally put your business address, run a mail, a radius around it, or everybody in the 07081 zip code or the 08802, as per a jersey in the house, zip code, and everybody will see it in that zip code, in that feed. It's a piece of cake. So if you talk about coffee, Google the word coffee and the word blog or coffee and media company and literally email every editor and writer of every coffee blog on the internet. Online, and by the way, anywhere, is by grabbing it. So if I were you, I would do this. I would go to Google, I would type in beer, so I would click this one, pubblasses.com. I'd go to this site, I'd see what they have, I would find the phone number of this place. Here's a phone number, I'd pick it up. Hello, who would I speak to about you guys possibly advertising on my beer blog?  And one out of every 147 will. But that's better than zero. Undervaluing just that one view needs to be the right view. But it's one view is a humongous mistake. That's how you do it. And what?  Where it gets written word, you look at the mediums, the LinkedIn, the word presses, you start a blog, right? Or you do it on your Facebook or you do it on your Instagram. How? There's only really three core ways in the current internet to really communicate to the world. The written word or video. What I'm doing right now. YouTube, Facebook video, Instagram, one minute versions. Video is the other way we communicate. And number three, audio. The boom of podcast. These are things that matter.  How are you gonna communicate it? Written audio or video? And how do you get people to actually see it? This is where we showed you how to go into the DM, right? Or you gotta figure out how to use some money and use Facebook ads and target the people that you're trying to reach. Or grinding hustle. Just a little emailing 700 to 1500 different blogs from media sites and saying you wanna distribute my content. Somebody has a 14,000 person email newsletter about coffee news. Find that person and ask them. Just gotta ask. And be smart, Jabra Jabra Hook. Ask them what you can do for them because you want everybody to read them. Post it on Medium and hit up the editors of Medium who curate content. Post a link on it and fill Reddit, right? Hit up the 4,700 coffee influencers on YouTube and send them a message and ask them if they wanna read it on their YouTube channel that has 147 views. 147 views is better than zero.  That's how you start. Wow, that was amazing, wasn't it? He's really, really good at getting the point across. And as you can see, it's really pretty simple. I hope that motivates you to getting started and the best way to get started right now simply is grab the free e-commerce course right below. All you gotta do is click on the link. You can click on it and learn. It's that simple. Please get started. I know I had a problem with that myself. I just didn't get started. I had so many obstacles and so many things I thought were in my way and they're just not. You need to get started. This is the time. If this rings with you right now, if what Gary Vee said is something that you needed to hear, go ahead and get started. Grab my e-commerce course down there. Get started today. Don't forget, if you haven't, subscribe and turn on all notifications and I'll see you in the next video. Hey, thanks for watching my video. Don't forget to subscribe to my channel and click that little bell right here so you can be notified every time I do a new video. Also, click on one of those videos there. Keep watching on my channel.


2,400 years ago, in the war between Athens and the Peloponnesians, the Spartan leader of Precedus gained the trust of his allies and countrymen and the respect of his adversaries for his personal example, exemplifying a philosophy of zeal, honor, and discipline. Even under tremendous pressure and a great personal risk, he helped fast to these core values and used them to inspire his followers to great victories. Today's military leaders must do no less, living within a moral and ethical framework that includes honor, courage, and commitment, but also competence and character. In crisis, we do not rise to our own expectations, but rather tend to fall to the level of our training. This means that whatever we do, each day we must prepare for the day that we will be tested. The way to do this is to have a personal framework for making proper decisions in the defense of our nation. Think well this week.


It was wonderful. It's a great honour to meet the Honourable Prime Minister. I had met him five years ago in Chattisgarh in one of the events and post that this was the personal interaction that I've had. It was wonderful. So he said we've got cheetahs, now you should come and take pictures, photographs of the cheetah. So when I was part of the Wildlife Board here in Karnataka I had gone to request the then Chief Minister, he was the Chief Minister of Gujarat at that time and I told him that the lions that he gave us to Mysore Zoo one of the lions is still doing well and the pair littered and we have a few lions now in the zoo thanks to him and it was wonderful to interact.


While soldering you should make a point of periodically cleaning your iron's tip with either a wet or brass sponge But which one? A wet sponge is cheap and simple. You clean the tip by dragging it through one of the slots in the sponge You will need to rewet the sponge at the start of each work session, so you might want to keep some water handy. A sponge won't scratch your iron, but the water in the sponge will cool it down rapidly and This repeated thermal stress over time will shorten the life of the tip. By the way, don't try swapping in a kitchen sponge They can't handle the same amount of heat The brass sponge costs a little bit more, but lasts much longer It is more abrasive, but that actually helps it clean more thoroughly and you don't have to water it, which is nice Whatever cleaning method you choose to use you can help preserve your tip by coating it with a bit of solder before powering down Just FYI