What We Do

We build custom bike frames out of Potsdam, Germany, and also offer a frame building course where you can learn how to build your own frame.

Frame Builder

Big Forest Frameworks offers custom handmade frames from the highest quality steel Reynolds and Columbus have to offer. With an emphasis on simplicity and beauty, and a taste for detail and design, a hand made frame from Big Forest Frameworks is something you will be enjoying for many years to come. The lightweight tube sets from Reynolds and Columbus, combined with the right bike fit for your body and riding style, allow us to produce frames that are not only lightweight, but also durable and feel great on the road or trail.


Dreaming of building your own frame? I can show you how. Sign up for one of our frame building courses and I can help your dreams to become reality. Don't think you can do it? You can. Never held a torch in your hand before? No problem. Tired of sitting in front of the computer all day and want to do something with your hands? So were we. You can do it, and it doesn't matter if you don't have any experience in the workshop. Since Big Forest Frameworks started offering frame building courses, many people just like you have already built their own frames and are enjoying riding them.

Big Forest Frameworks in HD

A short video about how Big Forest Frameworks got started, and the bikes we are building.

Frames and Complete Bikes

Handmade in Potsdam, Germany.

Frame Building Course

Build Your Own Frame

Build your dream bike yourself! We work together one on one to build your dream bike. We start with your ideas, the small details that you always wanted to have on your frame. We measure your body and your current bike to fine tune the geometry so that your new frame finally fits the way you want it to, and choose the tube set to give your frame the ride qualities that you choose. After a bit of practice with mitering tubes and brazing them together we can get to work. With every miter and each time you take the torch in your hand you’ll see the frame you’ve been dreaming about slowly become a reality. I can honestly tell you that it is a great experience to ride the frame that you built with your own hands for the first time!

A few words about my frame building courses… I generally recommend to first build a lugged frame (Lugged Fixie, Road, or Trekking Bike, see below). Building a frame with lugs is easier, goes much faster than without lugs, and brazing lugs is much easier than without lugs (fillet brazing). But, you can also build a lugless frame as your first frame, it just takes more time (I offer two courses, Mountain Bike or Road Bike). If you have the time and money, I recommend the Master Frame Building Course, in which we first build a lugged frame, and then a lugless frame in 10 days. This is really a great introduction into frame building, especially if you think you might continue building frames after the course is over!

What are 6 reasons why you should book a frame building course at Big Forest Frameworks?

1. Because building your own frame is awesome! How many people do you know that actually built the frame they are riding? If you are sitting in front of the computer all day long wishing you were somewhere else, working with your hands and not only seeing what you built, but riding it, is a wonderful experience you will never forget.

2. I run my courses with a maximum of two students at once. This level of attention helps tremendously to increase what you can learn in a small amount of time, and improves the quality of the frame you can build.

3. Many people that attend one of our courses tell me that I am a great teacher. I think this is really important, and a reason why nearly everyone goes home not only with a frame they built themselves, but also with a smile on their face. I care that you learn as much as you can and that your frame turns out as well as it can.

4. Some frame building courses focus more on theory, and your tubes actually come pre-cut. We believe that mitering tubes and brazing are at the heart of what frame building is all about. In our course, under our supervision, you build and braze the entire frame yourself, mitering every single tube.

5. Hard to believe, but two bikes from my frame building course were actually choosen as 'Bike der Woche' at mtb-news.de. A 29+ from Roman and another MTB from INOX. Amazing stuff and we are super proud of the bikes these guys built!

6. Many people that attend one of my courses hope to continue to build frames in the future. I have a small workshop and no large machines. If you don't have 50,000 Euro to get your workshop up and running, you will find it extremely valuable to see how it can be done on a modest budget, but still produce professional results.

Frame Building Course Pricing

Here are three of our most popular frame building courses and how they compare. There are many more below if you don't see what you are looking for!

Master Course


  • Learn the two basic types of frame construction
  • Learn how to braze a classic lugged road frame
  • Learn how to fillet braze a frame without lugs
  • We start with the easier lugged frame
  • With your first frame finished you have much more experience already, and will enjoy building the fillet brazed frame more than if you had started with it
  • 10 Days
  • Classic Lugged Frame (Road, CX, Singlespeed)
  • Fillet Brazed Frame (Any type)
  • 1 Lugged Fork
  • Price does not include material costs
  • Price includes MWST

Lugless Mountain Bike


  • Lugless MTB Frame
  • Lugless construction allows you to build any type of frame you want
  • Filled Brazed
  • Lugged dropouts recommended
  • 5 Days
  • Price does not include material costs
  • Price includes MWST

Lugged Road Frame


  • Road/Singlespeed/Trekkng
  • Best course for beginners
  • Lugged frame construction goes faster than without
  • Because it goes faster, it is more fun because you see the results in less time
  • 4 Days
  • Price does not include material costs
  • Price includes MWST

All Courses

Multi Week/Multi Frame, Single Frame, Fork, and Partial Courses

Multi Week Frame Building Courses

Master Course Dream Ride Lugged Mountain Bike - We build three frames together over three weeks. I recommend to first build a lugged frame, then a normal filled brazed frame, and finally the third frame will be custom lugged mountain bike, with lugs that you will fillet braze yourself. Lugged mountain bikes are really something special, and you will be very happy when yours is finished! Check one out here. 15 days, 3500 Euro + material cost

Master Frame Building Course - We build two frames together over 10 Days. I recommend to first build a lugged frame, and then a normal fillet brazed frame (any kind). This is a really great course for people that are interested in continuing to build frames on their own after the course is over. You will be much more confident and faster when you start the second fillet brazed frame than if it was your first frame. By building two frames what you learn will with stay with you longer through repetition, than if you only build a single frame. 10 Tage, 2325 Euro + material cost

Fork and Partial Frame Building Courses

Rigid Fork Frame Building Course - Build a rigid fork to fit your frame! This course is only available in combination with one of my other courses. 1 day, 1:1 225 Euro, not including material costs.

Fast Track Frame Building Course: We build the front triangle of your frame in 2 days, I finish the frame alone. 1025 Euro + Material Cost

Two Hour Frame Building Course: Stop by the workshop, cut your first tubes, give fillet brazing a test drive. It will definitely be fun and you'll have a better idea if a one week course is right for you. 30 Euro

Single Frame Building Courses

Custom Lugged Mountain Bike Frame Building Course - You can't buy lugs four a mountain bike, so lugged mountain bikes are really something special. As a beginner, you can however build your own lugged mountain bike in one week. I will build the lugs beforehand, so when you arrive to start your course they are ready to go. At the end of the course you'll have a really special frame to build up! As a beginner this course is really a great way to build something special straight from the first frame. 5 Days, 1850 Euro, including Fork Building Course + material cost

Fillet Brazed (Lugless) Mountain Bike Frame Building Course - Build your own mountain bike without lugs. Frame building without lugs is somewhat more time intensive than with lugs. As a beginner you just need to have a bit of patience, but you can do it! No prior experience is necessary with brazing. Does not include a fork, but can be combined with my fork building class (add 175 Euro and 1 day)., or add a suspension or carbon fork as an option. up to 5 days, 1150 Euro + material cost.

Fillet Brazed (Lugless) Fixie, Road, or Trekking Bike Frame Building Course - Build your own fixie, road, or trekking bike without lugs. Frame building without lugs is somewhat more time intensive than with lugs. As a beginner you just need to have a bit of patience, but you can do it! No prior experience is necessary with brazing. Does not include a fork, but can be combined with my fork building class (add 175 Euro and 1 day), or add a suspension or carbon fork as an option. up to 5 Days, 1150 Euro + material costs.

Lugged Fixie, Road, or Trekking Bike Frame Building Course - Build your own fixie, road, or trekking bike with lugs. Frame building with lugs is a great way to build your first frame. Lugged frames take less time to build than lugless frames, and brazing with lugs is easier than without. No prior experience is necessary with brazing. Highly recommended for beginners!

This course is available in two different versions. The normal course runs 4 days for 8 hours a day, for 995 Euro + material cost. On the fifth day you can add a fork building course if you'd like to build a fork as well. The second version of the course runs 6 hours a day for 5 days, without the option to build a fork, and also costs 995 Euro + material cost. Some people appreciate the shorter days and more relaxed pace of this version of the course.

Available spots for the Lugged Fixie, Road, or Trekking Bike Frame Building Course:
4.- 8.04.2016 (April)
18.-22.04 2016 (April)

Lugless frame building course (MTB/CX/Road):
9.- 13.05.2016 (May)

Open dates:
25.-29.05 (May)
30.5-03.06 (June)
13.06-17.06 (June)
27.06-01.07 (June/July)
04-08.07 (July)
25.-29.07 (July)
01.-05.08 (August)
08.-12.08 (August)

To book a course just send an e-mail to info@bigforestframeworks.com!

For further dates in 2016 please ask! Don't see the dates/course you'd like to sign up for? Please enquire via e-mail!

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About Us

The Faces Behind Big Forest Frameworks


Robert Piontek

Sales/Marketing/Web Design

It takes more than frame building skills to run a business, and Robert, our multi-talent…


Robert Piontek

Frame Builder/Artist/Visionary

Robert founded Big Forest Frameworks with the vision to build his own dream bikes that…


Robert Piontek

Test Pilot/Team Rider

Robert has the coolest job at Big Forest Frameworks, he gets to test out all…

Contact Me

Big Forest Frameworks is located in Potsdam, Germany

Feel free to visit me in my workshop! But, I am not always there, so please contact me beforehand to arrange for an appointment.

  • Karl-Liebknecht-Str 109, D-14482 Potsdam
  • +49 (0) 159 015 32779
  • info@bigforestframeworks.com