Courses

Learn Engraving by making Four Different Projects! Why say it when you can engrave it?! Learn how to add some personalization and flair with our DIY Engraving Kit. This kit comes with the engraving tool, multiple items to engrave, safety gear, sample designs, and the accessories needed to become a master engraver! Plus when you are done with the items we include, you can use the tool to engrave any wood, plastic, leather, glass, and metal items around the house. What is included: A private, interactive workshop led by a professional instructor Materials shipped to participants: Engraving tool Multiple items to engrave Safety gear Sample designs and the accessories needed to become a master engraver!

Explore the Creality Falcon 2 laser engraver in this comprehensive video tutorial. Discover the unique features of this gantry-style diode-based laser and learn if it's the right choice for your needs. Gain insights into consumer-grade laser engravers, understand the Falcon 2's specifications, and follow a step-by-step guide for setting up Lightburn software. Master essential techniques such as focusing the laser, drawing shapes, setting power and rate, framing workpieces, importing models, and working with images. Review engraving and cutting results, and determine if the Creality Falcon 2 is suitable for your projects. Perfect for makers and enthusiasts looking to expand their knowledge of laser engraving technology.

Explore the xTool M1 Laser Cutter and Engraver for resin art in this 22-minute video tutorial. Learn how to set up the machine, work with design files, create custom designs, and engrave on various materials including metal. Discover techniques for creating stencils and incorporating laser-cut elements into resin art projects. Gain insights on using the xTool M1 for personal projects and gifts while understanding the importance of design usage rights and terms. Follow along as the instructor demonstrates innovative applications of laser cutting and engraving technology in resin art, offering inspiration for both beginners and experienced artists looking to expand their creative toolkit.

Explore a comprehensive buyer's guide for CO2 laser cutters and engravers, focusing on K40 and Chinese models. Learn about essential features, specifications, and safety considerations when shopping for these machines. Gain insights into control boards, laser tube sizes, power supplies, cooling systems, and software options. Discover valuable resources and expert advice for tinkerers interested in laser cutting technology. Be aware of potential safety risks and ensure you have the necessary knowledge and experience before considering a purchase.

Watch a detailed technical video exploring the creation and legality of a custom LED license plate frame featuring an ESP32 microcontroller and laser-engraved acrylic design. Learn about the integration of LED lighting effects including colors, wipes, fades, and flame animations, while understanding the scientific principles of linear fiber optics and total internal reflection. Discover how etched designs channel light effectively and get a thorough analysis of federal and state laws regarding illuminated license plate frames for road use. Gain practical insights into the components needed, including the M5 Stick C Plus, SK6812 LED strips, and voltage converters, with links to specific products and resources for building your own.

Explore the capabilities of a powerful laser engraving and cutting machine in this 32-minute video review. Dive into the features and performance of the 40W model, learning about its engraving precision and cutting abilities on various materials. Gain insights into the machine's setup, software interface, and practical applications. Join a dedicated Facebook group for user discussions and tips. Discover how this versatile tool can enhance your crafting, prototyping, or small-scale manufacturing projects. Support the content creator through Patreon or PayPal donations, and explore vintage machinery resources on their website. Take advantage of a special discount on phase converters from the video sponsor.

Explore the capabilities of the TwoTrees TS3 desktop diode laser engraver in this comprehensive 19-minute review video. Learn about the machine's specifications, unboxing process, and initial setup, including troubleshooting tips. Discover various control and software options for operating the laser engraver. Follow along as the presenter demonstrates how to set the laser focus height and conducts engraving and cutting tests on different materials. Examine the performance of the rotary axis feature and hear the reviewer's final verdict on the machine's strengths and limitations. Gain insights into whether this compact laser engraver is suitable for your desktop projects or if it lacks the necessary power for your intended applications.

Explore the capabilities of the xTool D1 laser engraver in marking stainless steel through this comprehensive video tutorial. Learn about the laser engraver's features, project setup, and artwork creation process. Dive into using Lightburn software for laser control, and observe direct-marking attempts on stainless steel. Discover the application of CerMark laser marking spray and compare results between direct marking and spray-assisted engraving. Gain insights into the effectiveness of diode lasers for metal engraving and understand the pros and cons of different marking techniques.

Explore the capabilities of the Gweike G2 Pro fiber laser engraver in this comprehensive video review. Learn about the differences between the G2 and G2 Pro models, and follow along with the setup process and software demonstration. Witness various material tests to gauge the laser's performance, and discover its versatility with the rotary fixture for cylindrical objects. Get insights on the handheld engraving feature and hear the reviewer's final thoughts on whether this laser engraver is suitable for small shops.

Tackle practice problems on alcohols, ethers, and epoxides in this 28-minute organic chemistry lecture. Enhance your understanding of these important chemical compounds through hands-on problem-solving exercises. Gain valuable insights and improve your skills in organic chemistry as you work through various examples and scenarios related to alcohols, ethers, and epoxides.

Explore the complex relationship between childhood trauma and alexithymia in this 15-minute video from Forensic 365. Delve into Developmental Traumatology to understand how early-life trauma, often non-verbalized and misinterpreted as protective, can lead to deficits in brain areas responsible for sensory and affective experiences. Examine the mediating role of alexithymia—the subclinical inability to identify and describe emotional experiences—in linking childhood trauma to adult psychopathology. Investigate how this condition may, in some cases, contribute to moral deprivation and criminal motivations. Gain insights into the long-term impacts of early trauma on emotional processing and potential behavioral outcomes.

Explore alcohol and ether mechanisms and reactions in this 22-minute organic chemistry lecture. Delve into the intricacies of these important chemical processes, gaining a deeper understanding of their properties and behaviors. Learn about the various types of reactions involving alcohols and ethers, their mechanisms, and their significance in organic chemistry. Enhance your knowledge of these fundamental concepts through clear explanations and examples provided by experienced educators from Ninja Nerd.

Explore the mechanisms and reactions of ethers and epoxides in organic chemistry through a concise 14-minute video lecture. Gain insights into these important functional groups, their properties, and their role in various chemical transformations. Learn about the structural characteristics, synthesis methods, and common reactions associated with ethers and epoxides. Enhance your understanding of organic chemistry concepts and their practical applications in this informative presentation by Ninja Nerd.

Explore the world of hacking Ethereum-based decentralized applications (DApps) in this 49-minute conference talk from BSidesLV 2021. Dive into the intricacies of smart contract vulnerabilities and learn about potential attack vectors in the Ethereum ecosystem. Gain insights from speaker Luis Quispe Gonzales as he breaks ground on the topic of cryptocurrency security, focusing on Ether and its associated platforms. Discover techniques used by hackers to exploit weaknesses in DApps and understand the importance of robust security measures in blockchain technology.

Explore the world of Ethereum-based decentralized applications (DApps) and their security vulnerabilities in this 26-minute conference talk by Luis Quispe Gonzales. Gain insights into blockchain technology, smart contracts, and the potential of DApps to revolutionize various industries. Learn how these applications work, the technology behind them, and common vulnerabilities that can be exploited. Discover attack methods and, more importantly, strategies to protect against them. Delve into topics such as blockchain basics, smart contracts, integral overflow, and more. Enhance your understanding of DApp security and its implications for the future of blockchain adoption.

Explore the security landscape of Ethereum-based decentralized applications (DApps) in this 50-minute conference talk from Ekoparty 2021. Delve into the fascinating world of blockchain technology and its potential to revolutionize various industries. Discover why DApps are emerging as game-changers in blockchain adoption and learn about their underlying technology. Examine common vulnerabilities in Ethereum-based DApps and gain insights into attack methods. Acquire valuable knowledge on protecting these applications from potential threats. Led by Luis Quispe Gonzales, an experienced Informatics Engineer with expertise in penetration testing and IT security, this talk provides a comprehensive overview of DApp security in the Ethereum ecosystem.

Explore the Ortur Laser Master 3, a sub-$1,000 laser engraver/cutter with impressive performance and unique features. Learn about assembly, key features, setup, and configuration. Discover how to use the web interface and desktop software options, including Lightburn. Get practical tips on setting up for engraving, protecting your workspace, and managing smoke. Understand material settings and review sample cuttings and engravings. This comprehensive video review covers everything you need to know about this exciting maker tool, from unboxing to producing finished projects.

Explore the capabilities of the Ortur Laser Master 3 in this 20-minute video tutorial showcasing a first-time laser cutting and engraving project. Learn about the types of projects possible with a laser engraver/cutter, and follow along as the presenter demonstrates the machine's features. Gain insights into the process of creating laser-cut designs, including tips for beginners. Download the Lasercut Mech v2 files to try your own project at home. Discover how to support the content creator and join a community of enthusiasts through the provided Discord channel for further learning and discussion.

Explore the world of Ethereum hacks and their impact on blockchain technology in this 48-minute conference talk from RSA Conference. Delve into the intricacies of smart contracts and the Ethereum Virtual Machine while examining the history of major heists that have shaped the Ethereum ecosystem. Gain a basic understanding of blockchain technology implementation, common security flaws, and the legal implications of attacks against distributed entities. Learn about various high-profile incidents, including The DAO hack, ICO exploits, and Parity Multi-Sig Wallet vulnerabilities. Discover the role of bug bounties, the debate on forking, and the concept of "code as law" in the cryptocurrency world. Analyze the lessons learned from these incidents and their influence on the future of blockchain security.

Explore the origins of radio communication in this historical lecture from The Royal Institution's 1972 Christmas Lecture series "Ripples in the Ether: The Science of Radio Communication." Geoffrey G. Gouriet delivers the first installment of his six-part series, discussing the fundamental beginnings of radio technology. Recorded on December 22, 1972, this one-hour lecture provides valuable insights into electromagnetic waves, the principles behind them, and how electricity can transmit information. As part of a comprehensive series that traces the evolution of communication technology from the first telephone to the then-futuristic "Viewphone," Gouriet uses engaging demonstrations to explain how radio waves travel through the "ether" and how broadcast signals are translated into sound and images. This lecture represents the beginning of a scientific journey through the past, present, and future of radio communications, offering both historical context and technical explanations of the science that revolutionized human connection.