The Infill Podcast - The Place For 3D Printing

In this episode, we are joined by Radek of RH3D. Brought to you by Sovol. Get $10-20 OFF on Sovol 3D Printers: https://jle.vi/sovol (use code NEXTLAYER)
Radek is the engineer, architect, woodworker, and maker behind RH3D, a project best known in the 3D printing community for breathing new life into aging Ender 3 printers. His most recognized work, E3NG, reuses approximately 68–78% of an Ender 3 to build a fundamentally new, more capable 3D printer—challenging the idea that old machines should simply be replaced.
Born in the Czech Republic and raised in a family of mechanical engineers, Radek was immersed in problem-solving and hands-on creation from an early age. His path took him through architecture school, years running a woodworking business, and eventually back to architecture—while continuing to design and develop advanced 3D printer projects part-time under the RH3D name.
Whether you’re an Ender 3 owner, a maker who loves modding and rebuilding machines, or someone interested in sustainable approaches to 3D printing hardware, this episode is packed with insight, inspiration, and real-world engineering experience.
🤫 Get behind the scenes and exclusive content on my Patreon: https://patreon.com/thenextlayer
💬 JOIN MY DISCORD: https://jle.vi/tnl-discord
🎥  IN THIS EPISODE:  🎥
00:00 Introduction
01:08 Radek’s Background: Architecture, Engineering Roots & First Printer
03:36 Origin Story of the E3NG: From Cheap Upgrades to Full Conversion
05:37 Czech Maker Culture & Why Engineering Runs Deep
08:06 What Is the E3NG? CoreXY Conversion, Reused Parts & Enclosure Benefits
11:21 Open-Source, Part-Time Development & Community Support
13:18 Virtu E3 Revealed: Next-Gen Ender-Based Performance Printer
15:11 Speed Talk: 40K Accels, Rigid Frame, and All-Wheel-Drive XY Options
16:36 Lessons from Thousands of Builds: Feedback Loops, Testing, and Design Discipline
19:49 Virtu E3 Design Choices: Linear Rails, Triple-Z Bed, and Fewer Options on Purpose
20:43 Open-Source Toolheads: Let the Community Build the Variants
21:42 No-Hassle Build Recommendations: Budget, Hotends & Upgrade Paths
24:12 Electronics Picks: SKR vs Octopus for Multi-Tool Setups
26:17 What’s Next: Hotend Changers, Toolchangers & the Patent Question
28:30 Virtu E3 Release Timeline + The Feeling of Seeing Your Design as a Kit
29:35 Kits, Commissions, and Crediting Creators (LDO, Fabreeko, FYSECT)
31:35 MMUs on E3NG: Pico, BoxTurtle, and Radek’s DIY Multi-Motor MMU
35:29 CAD Tools & Late-Night Maker Life (Fusion, Onshape, FreeCAD)
36:34 Wrap-Up
🔗 CONNECT WITH RADEK: 🔗
👉 Follow Radek / RH3D on YouTube: https://www.youtube.com/@RH3D_cz
👉 RH3D: https://rh3d.xyz/
👉 Follow RH3D on Instagram: https://www.instagram.com/RH3D_cz
🛒 RECOMMENDED GEAR: 🛒
📍 Complete list of 3D Printing accessories: https://kit.co/jlevi/3d-printing
📍 Complete list of my videography gear: https://kit.co/jlevi/content-creation
📍My favorite thing to 3D Print: https://jle.vi/multiboard
📍My recommended electronics & control boards: https://jle.vi/bigtreetech
📍 My favorite 3D printing "accessory": https://jle.vi/magigoo | https://jle.vi/whambam
📍 My favorite 3D printing filament: https://jle.vi/polymaker
📍 Check out the official TNL merch: https://shop.thenextlayer.com/
📍 PLEASE CONSIDER SUPPORTING THE CHANNEL BY SHOPPING USING MY LINKS! FULL LIST CAN BE FOUND AT: https://jle.vi/links

In this episode, we are joined by Yuto Horiuchi. Brought to you by Sovol (https://jle.vi/sovol) and OctoEverywhere (https://octoeverywhere.com/welcome?id=podcast).
🎁 Get $10-20 OFF on Sovol 3D Printers: https://jle.vi/sovol (use code NEXTLAYER)
🎁 Get 3 Months of FREE Premium Perks at OctoEverywhere: https://octoeverywhere.com/welcome?id=podcast 
What happens when a “normal” manufacturing industry employee discovers 3D printing during COVID… and never looks back?
In this episode, we sit down with Yuto Horiuchi, a passionate 3D printing enthusiast whose journey into maker culture began during the pandemic — and quickly grew into something bigger. What started as a casual hobby has now expanded into community involvement and even hosting an event for fellow makers.
Whether you’re into FDM 3D printing, troubleshooting print failures, dialing in slicer settings, or just love hearing stories from people who genuinely live the hobby — you’ll love this episode.
🤫 Get behind the scenes and exclusive content on my Patreon: https://patreon.com/thenextlayer
💬 JOIN MY DISCORD: https://jle.vi/tnl-discord
🎥  IN THIS EPISODE:  🎥
00:00 Introduction
00:56 Meet Yuto Horiuchi: The Man Behind Japan RepRap Festival
02:03 Yuto's Journey into 3D Printing
04:29 Challenges and Triumphs in 3D Printing
07:18 The 3D Printing Scene in Japan
13:13 Keeping the RepRap Culture Alive
24:35 Monetizing Content and Future Plans
25:40 Organizing Japan RepRap Festival
34:04 Exciting Plans for This Year's Livestream
35:26 Open Source and 3D Printing Innovations
36:06 Future of 3D Printing: Trends and Predictions
42:42 Challenges with Exotic Filaments
44:54 Catching Up and Personal Projects
55:53 Favorite Printers and Filaments
01:00:02 Closing Remarks and Future Plans
🔗 CONNECT WITH YUTO: 🔗
👉 Subscribe to Psych0h3ad - P3D on YouTube: https://www.youtube.com/@Psych0h3ad
👉 Support Yuto: https://bento.me/psych0h3ad
👉 Designs by Yuto on Cults: https://cults3d.com/en/users/YuTR0N/3d-models
👉 Designs by Yuto on Printables: https://www.printables.com/@Psych0h3ad
🛒 RECOMMENDED GEAR: 🛒
📍 Complete list of 3D Printing accessories: https://kit.co/jlevi/3d-printing
📍 Complete list of my videography gear: https://kit.co/jlevi/content-creation
📍My favorite thing to 3D Print: https://jle.vi/multiboard
📍My recommended electronics & control boards: https://jle.vi/bigtreetech
📍 My favorite 3D printing "accessory": https://jle.vi/magigoo | https://jle.vi/whambam
📍 My favorite 3D printing filament: https://jle.vi/polymaker
📍 Check out the official TNL merch: https://shop.thenextlayer.com/
📍 PLEASE CONSIDER SUPPORTING THE CHANNEL BY SHOPPING USING MY LINKS! FULL LIST CAN BE FOUND AT: https://jle.vi/links

In this episode, we are joined by Alessio Pagliai and Stepan Drunks. Brought to you by Sovol (https://jle.vi/sovol) and OctoEverywhere (https://octoeverywhere.com/welcome?id=podcast).
🎁 Get $10-20 OFF on Sovol 3D Printers: https://jle.vi/sovol (use code NEXTLAYER)
🎁 Get 3 Months of FREE Premium Perks at OctoEverywhere: https://octoeverywhere.com/welcome?id=podcast 
Alessio Pagliai is an open art inventor and mechanical engineer, whose work blends creativity, movement, and experimentation into a uniquely personal maker philosophy. We also sit down with Stepan Drunks, a computational and industrial designer specializing in advanced 3D printing workflows, complex geometries, and production-ready objects ranging from wearables and accessories to functional products.
We dive deep into how computational design is shaping the future of additive manufacturing — from custom digital pipelines and fabrication techniques, to how artists and engineers can collaborate (and overlap) in the modern maker ecosystem. Whether you’re into FDM, SLA, generative design, industrial design, or simply love the creative side of additive manufacturing, this conversation is packed with inspiration and hard-earned insights.
🤫 Get behind the scenes and exclusive content on my Patreon: https://patreon.com/thenextlayer
💬 JOIN MY DISCORD: https://jle.vi/tnl-discord
🎥  IN THIS EPISODE:  🎥
00:00 Introduction
01:25 Meet the Guests: Alessio and Stepan
03:29 The Journey into 3D Printed Shoes
06:36 Stepan's Background and Design Philosophy
20:25 Exploring Parametric Design and Custom G-Code
26:35 The Role of Open Source and TPU in 3D Printing
32:05 Filament Improvements and Personal Experiences
33:54 Challenges with PEBA and Foaming Materials
36:14 Customizable 3D Printed Shoes
37:25 Parametric Modeling and G-Code
41:28 Business Opportunities in 3D Printing
46:44 Monetizing Creative Work
56:20 Getting Started with 3D Printed Shoes
01:01:38 Conclusion and Final Thoughts
🔗 CONNECT WITH ALESSIO AND STEPAN: 🔗
👉 Alessio: https://riverfamily.art/
👉 Stepan: https://drunks.st/
👉 Stepan on YouTube: https://www.youtube.com/channel/UC4QRinnNwabzGQxk_s5hdKg
🛒 RECOMMENDED GEAR: 🛒
📍 Complete list of 3D Printing accessories: https://kit.co/jlevi/3d-printing
📍 Complete list of my videography gear: https://kit.co/jlevi/content-creation
📍My favorite thing to 3D Print: https://jle.vi/multiboard
📍My recommended electronics & control boards: https://jle.vi/bigtreetech
📍 My favorite 3D printing "accessory": https://jle.vi/magigoo | https://jle.vi/whambam
📍 My favorite 3D printing filament: https://jle.vi/polymaker
📍 Check out the official TNL merch: https://shop.thenextlayer.com/
📍 PLEASE CONSIDER SUPPORTING THE CHANNEL BY SHOPPING USING MY LINKS! FULL LIST CAN BE FOUND AT: https://jle.vi/links

In this episode, we are joined by Justin of Pisces Printing. Brought to you by PCBWay (https://jle.vi/pcbway) and OctoEverywhere (https://octoeverywhere.com/welcome?id=podcast).
🎁 Get $5 off your first order at PCBWay: https://jle.vi/pcbway 
🎁 Get 3 Months of FREE Premium Perks at OctoEverywhere: https://octoeverywhere.com/welcome?id=podcast 
Justin is the creator behind Pisces Printing, a YouTube channel dedicated to functional 3D printing, CAD-driven design, and 3D printable speaker systems. With over 10 years of experience in CAD and 13 years in the 3D printing world, Justin brings a rare blend of engineering precision and maker creativity to the podcast.
In this episode, we dive deep into what it takes to design 3D printable speakers that don’t just look good—but actually sound great. Justin shares his journey designing speakers for over five years and how CAD skills translate into real-world audio performance.
🤫 Get behind the scenes and exclusive content on my Patreon: https://patreon.com/thenextlayer
💬 JOIN MY DISCORD: https://jle.vi/tnl-discord
🎥  IN THIS EPISODE:  🎥
00:00 Introduction
01:13 Meet Justin of Pisces Printing
02:01 Justin's Journey into 3D Printing
04:16 Challenges and Innovations in 3D Printing Speakers
08:25 Exploring Advanced Materials and Techniques
18:34 Future of 3D Printing in Speaker Design
25:04 Getting Started with 3D Printed Speakers
29:28 Exploring Speaker Design and Electromagnetic Properties
30:15 Creative Uses for Multimaterial 3D Printing
31:25 Challenges and Innovations in Multimaterial Printing
41:45 The Future of 3D Printing: High-Heat Materials and Applications
48:14 Special Purpose Filaments and Their Applications
52:13 Conclusion
🔗 CONNECT WITH JUSTIN: 🔗
👉 Follow Justin / Pisces Printing on YouTube: https://www.youtube.com/@piscesprinting/
👉 My previous video where I 3D printed custom speakers: https://youtu.be/zgeUgVqRP7g
👉 My previous video where I shared the top CAD tips & tricks to save you HOURS: https://youtu.be/G5odhYRwPi8
🛒 RECOMMENDED GEAR: 🛒
📍 Complete list of 3D Printing accessories: https://kit.co/jlevi/3d-printing
📍 Complete list of my videography gear: https://kit.co/jlevi/content-creation
📍My favorite thing to 3D Print: https://jle.vi/multiboard
📍My recommended electronics & control boards: https://jle.vi/bigtreetech
📍 My favorite 3D printing "accessory": https://jle.vi/magigoo | https://jle.vi/whambam
📍 My favorite 3D printing filament: https://jle.vi/polymaker
📍 Check out the official TNL merch: https://shop.thenextlayer.com/
📍 PLEASE CONSIDER SUPPORTING THE CHANNEL BY SHOPPING USING MY LINKS! FULL LIST CAN BE FOUND AT: https://jle.vi/links

In this episode, we are joined by Martina Bartoňová and Karel Kunz. Brought to you by Sovol (https://jle.vi/sovol) and OctoEverywhere (https://octoeverywhere.com/welcome?id=podcast).
🎁 Get $10-20 OFF on Sovol 3D Printers: https://jle.vi/sovol (use code NEXTLAYER)
🎁 Get 3 Months of FREE Premium Perks at OctoEverywhere: https://octoeverywhere.com/welcome?id=podcast 
Martina Bartoňová and Karel Kunz are one of the team members behind Fillamentum, joins us to share how the company continues to lead the way in sustainable 3D printing materials. From their groundbreaking Fishy Filaments project—which transforms reclaimed fishing nets into premium filament—to their ongoing innovations like NonOilen, FlexiTorc, and Flexfill PEBA, Martina and Karel reveals how Fillamentum is redefining what’s possible in the eco-friendly 3D printing industry.
With their deep background in material development and product innovation, Martina and Karel discusses the company’s mission to reuse high-performance polymers and create filaments that not only print beautifully but also protect the planet. 
Whether you’re a 3D printing hobbyist, professional, or sustainability advocate, this episode offers an inside look at how Fillamentum blends science, design, and environmental responsibility to drive meaningful change in the maker community.
🤫 Get behind the scenes and exclusive content on my Patreon: https://patreon.com/thenextlayer
💬 JOIN MY DISCORD: https://jle.vi/tnl-discord
🎥  IN THIS EPISODE:  🎥
00:00 Introduction
01:08 Meet Martina and Karel from Fillamentum
01:51 Martina's Journey in Fillamentum
02:58 Karel's Background and Role
04:11 Innovations in Filament
04:56 The Evolution of 3D Printing Materials
06:16 Challenges and Innovations in Filament Production
08:34 Marketing and Educating Customers
12:56 Fishy Filaments: Recycling High-Quality Nylon
16:59 NonOilen: A High-Performance PLA Blend
29:06 Upcoming Bio-Based Colors
29:28 Limited Edition Drops
31:42 Innovative Iridescent Filaments
33:15 Flame Retardant and ESD Materials
35:23 The Future of Nylon in 3D Printing
44:23 Exploring FlexiTorc
45:40 PEBA vs. TPU
53:28 Recycled Medical-Grade Filaments
56:05 Conclusion and Future Innovations
🔗 CONNECT WITH MARTINA AND KAREL: 🔗
👉 Fillamentum: https://jle.vi/fillamentum
👉 Subscribe to Fillamentum on YouTube: https://www.youtube.com/@Fillamentum
👉 Follow Fillamentum on X: https://x.com/Fillamentum
👉 Follow Fillamentum on Instagram: https://www.instagram.com/fillamentum/
👉 Like Fillamentum on Facebook: https://www.facebook.com/fillamentum/
🛒 RECOMMENDED GEAR: 🛒
📍 Complete list of 3D Printing accessories: https://kit.co/jlevi/3d-printing
📍 Complete list of my videography gear: https://kit.co/jlevi/content-creation
📍My favorite thing to 3D Print: https://jle.vi/multiboard
📍My recommended electronics & control boards: https://jle.vi/bigtreetech
📍 My favorite 3D printing "accessory": https://jle.vi/magigoo | https://jle.vi/whambam
📍 My favorite 3D printing filament: https://jle.vi/polymaker
📍 Check out the official TNL merch: https://shop.thenextlayer.com/
📍 PLEASE CONSIDER SUPPORTING THE CHANNEL BY SHOPPING USING MY LINKS! FULL LIST CAN BE FOUND AT: https://jle.vi/links