PRE-LAUNCH SALE

Learn how to fillet braze a Bike Frame with our 5-Day Course Blueprint

5 Day Fillet Brazers is for anyone who wants to learn how to build their own bicycle frame using the fillet brazed technique, or anyone looking to improve their technique, save time, and build a more beautiful bike frame.

PRE-LAUNCH SALE! 

Join before January 31st to get 50% off, early access, to a private group where you get your questions answered daily, and more! And lifetime access to everything is just $99 (billed as €95, Normally $199). Offer Expires soon.

Unlock the art of Fillet Brazing and take your bike frame-building skills to the next level!

Whether you’re dreaming of building your own custom bike frame or refining your existing brazing techniques, this course is your gateway to mastering one of the most beautiful and versatile methods in bicycle construction.

Fillet brazing is the perfect technique for creating any type of frame — road, gravel, mountain, trekking, or city bikes—and allows you to bring your dream designs to life with precision and style..

ALL YOU NEED TO KNOW

In this course, you’ll learn:

- How to lay a strong, clean fillet that enhances both form and function.

- The secrets of proper preparation, technique, and finishing to achieve professional results.

- How to evaluate and critique your work to continuously improve your craft.

Join us and discover why fillet brazing is a cornerstone of custom frame building. With our expert guidance, you’ll gain the confidence and skills to create bike frames that are truly one of a kind.

''There is hardly a better way to spend your vacation as an enthusiastic cyclist than a week in Potsdam in the workshop of Big Forest Frameworks,. I had no previous experience in brazing, but the frame turned out beautifully and has been rolling through our forests for 3 years now. Thanks Robert!''

- Daniel Helbig

''An absolutely brilliant experience building my own bike frame with Robert. Friendly, competent and sufficiently reserved so as not to take over all the work. At the end you really have the feeling that you built your own frame completely by yourself. A recommendation for every bike enthusiast''

- Christian Macholdt.

''I built the perfect ATB frame for myself in 5 days at Big Forest Frameworks. With great instructions and support from Robert and Konrad, it worked perfectly. I'm thrilled that I was able to build something unique and that all the details were possible. Fillet brazing is also a lot of fun. Thank you!''

- Klaus Mathwig

What You'll Learn In This Course

1. Material Selection

  • Benefit: Which flux & rods are best

  • Feature: Brazing is significantly easier if you start with the right materials

  • Benefit: We use and recommend a special blend of rods & flux that make fillet brazing dramatically easier

2. Preparation

  • Benefit: Good preparation is the cornerstone of exceptional brazing.

  • Feature: Proper preparation ensures strong, precise joints and sets you up for the best results every time.

  • Benefit: It’s quick and straightforward, yet absolutely essential—just like material selection, it’s a key pillar for success. And in this course, we show you exactly how to do it right, so you can build a bike frame you’ll be proud of.

3. Brazing Fundamentals

  • Benefit: A solid understanding of the fundamentals is the key to reaching your full potential as a frame builder.

  • Feature: This is where the magic happens—the foundation upon which all great brazing skills are built.

  • Benefit: First, you need to fully UNDERSTAND the process, and then EXECUTE it with confidence. In this course, we guide you every step of the way, showing you exactly how to master the craft.

4. Finishing

  • Benefit: This is where the true beauty of your craftsmanship begins to shine.

  • Feature: Properly finishing the joint is just as crucial as the brazing itself—it’s what takes your frame from functional to exceptional.

  • Feature: It’s the perfect combination of expert brazing and meticulous finishing that delivers the stunning results you’re aiming for, and we show you exactly how to achieve it.

5. Analysis

  • Benefit: Develop the skill to confidently critique your own work.

  • Feature: When you know what to look for, you gain the insight needed to make each build better than the last.

  • Benefit: Understanding what went wrong—and why—is the key to improving and mastering your craft. We’ll teach you how to recognize those details and use them to grow.

Limited Time Pre-Launch Bonuses

Amazing Bonuses

  • 19 Geometry Checks You Don’t Want to Forget - well worth the course price alone! (Downloadable PDF)

  • Tubing Selection: 10 Mistakes You Want To Avoid When Choosing Tubing for a Bicycle Frame (Downloadable PDF)

  • Private Community: Get all your questions answered daily so you are never second guessing or wasting time!

  • Customized Course: The course will be built around your specific needs as an early adopter. This is something that folks will not get to experience with the finished course! 

Meet Your Instructor

My name is Robert Piontek and I've had a torch in my hand almost every day for the past 12 years, building custom steel bicycle frames and teaching others how to do the same. 

I started with just a cheap €150 torch (that I bought off of eBay), a frame building jig that I made myself that wasn't particularly accurate, a hack saw and a few files. But I managed to build my first frame with what I had at the time, and you can do it, too. Over the years the workshop has grown quite a bit, as well as the tooling, but most of it you don't need at all. Don't get stuck getting started worrying about all the stuff you think you need. You proabably don't need it. Start with the basics and just teach yourself how to fillet braze. The equipment you need is pretty limited, and the experience you gain will motivate you to take the next step towards moving to actually building your own frame.

Now I am living the dream as a professional frame builder. It is a really amazing career where I can be creative, be proud of what I accomplished on any given day, and it brings me joy to work with my hands and see the results with my own eyes.

You can build your own frame, too. And guess what the #1 thing I've learned throughout this entire journey is...?  👉  You don't need fancy gear, a professional frame jig or big machines. The main thing is you need a torch, and the knowledge of how to braze two tubes together. Once you understand the fundamentals, the rest will fall into place. Don't worry about everything else. You just need a space to work, and it can be quite small, a torch, and a couple of files to fit the tubes together. This is the first step! There is plenty to come, but if you worry about everything at the start, you'll never get started. Learn to braze, then learn to build.

But I get it, you probably don't really care about who I am and why I created this platform... Right now, all you care about is CAN I ACTUALLY HELP YOU? Well, since launching Big Forest Frameworks in 2012, over 400 people have enrolled in a frame building course here and the feedback is in... People are blown away at how fast they can learn how to fillet braze when they learn a proven step-by-step process. I hope you're as excited as I am for you to begin this journey!  I host a weekly Q&A call every single week in our private community, I hope to meet you soon!

Who Is This Course For?

  • You want to build your own bike frame, and learning to fillet braze is the essential first step.

  • You’re already familiar with fillet brazing but are looking to refine your technique and achieve even better results.

  • You admire the artistry of fillet brazing—a technique cherished in the bicycle frame-building industry—and want to deepen your understanding and skills.

Fillet brazing is a versatile technique, perfect for building any type of bicycle frame:

  • ​Road Bikes

  • Gravel Bikes

  • ​Mountain Bikes

  • Trekking and City Bike

  • The possibilities are endless—create virtually anything you can imagine!

Who Is This Course NOT For?

  • Your aren't willing to take instructions and prefer to figure things out on your own with trial and error.

  • You'd rather waste time surfing the web or youtube finding inacurate and incomplete information

Frequently Asked Questions

What skill level is this program for?

No prior experience? No problem! This course is designed to take you from absolute beginner to confidently brazing a bike frame. We start with the fundamentals—covering materials, proper preparation, and the brazing process itself. From there, we guide you through finishing your joints and analyzing your work to ensure you’re always improving.

How long do I have access to the program & when does it start?

The course will go live on February 1st. Around half of the content has already been uploaded and is accessible. Access to the course is granted for life

Can't I learn all of this on Youtube?

While there’s plenty of information on fillet brazing available online, the specific technique we teach is unique and not widely used in the bike-building industry. Over the years, we’ve seen dramatic improvements in the quality of frames built by students who have attended our in-person courses in Germany. This method is tried, tested, and tailored for exceptional results, and we’re confident it can help you achieve the same success. You’ll gain insights and guidance that simply aren’t available in typical online videos.

Do I need to have all the gear before starting?

You don’t need any equipment to begin this course. We’ll cover everything from selecting the right torch to understanding the essential tools and materials needed for fillet brazing. You’ll also receive a detailed list of recommended supplies, so you’ll know exactly what to get when you’re ready to start building. This course is designed to ensure you’re fully prepared, even if you’re starting from scratch.

Should I invest in 5 Day Fillet Brazers before investing in something else frame building related?

Yes! If you’re serious about building bike frames, this course is the perfect place to start. Fillet brazing is the foundation of frame building, and mastering it will make the rest of the process feel much simpler.

If you’ve dreamed of building your own bike frame but aren’t sure where to begin, this is your starting point. Learning to braze two tubes together is the gateway to the wonderful world of frame building—and the first step in an exciting, never-ending journey!

Is there a guarantee?

Absolutely! 5 Day Fillet Brazers has a 7-Day Satisfaction Guarantee (after the course starts). If you are not completely SATISFIED and ENLIGHTENED by the 5 Day Fillet Brazers Program, then contact us within 7 Days for a full refund, no questions asked!

© 2025 Robert Piontek

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