The archive · Hardware & Devices · Financial decision · 2012–2025
Prusa Research bootstrapped open-source 3D printing to ~3.6B CZK revenue, no investors
A Czech student's open-source printer kits grew into a no-VC hardware empire shipping 100,000+ machines a year and €160M+ in revenue.
Prusa Research
What the business is
Prusa Research designs and sells open-source desktop 3D printers (Original Prusa i3, MK3S+, MINI, XL), Prusament filament and PrusaSlicer software, shipping kits and assembled machines worldwide.
How it started
As a student and part-time musician in Prague, Průša found the RepRap open-source 3D printer project online, built his own machine to print custom parts, and kept iterating on it; in 2012 he formally founded Prusa Research in a Prague basement and started selling his improved open design as kits.
What happened
Growth came from product and community, not funding: revenue climbed from about €149,000 in 2014 to €70M+ in 2019, Deloitte named the company Central Europe's fastest-growing tech firm in 2018 with 17,118% growth, and in 2020 alone it shipped more than 100,000 printers and 500+ tonnes of filament with 600+ staff. Průša kept everything in-house — filament lines, injection molding, later PCB assembly — and during COVID the company produced and donated 250,000+ open-source face shields.
How it ended up
Still scaling and still founder-owned: according to the company's filed financial statements, FY2024 turnover reached nearly 3.6B CZK (about €140M), roughly 3.2B CZK of it from exports, with operating profit around 150M CZK; the three Průša brothers own 100% of the company.
Background
Prusa Research is a Prague-based company that designs and sells open-source desktop 3D printers, filament and slicing software. It grew from one student's hobby into one of the world's largest 3D printer manufacturers — without taking a single round of outside investment.
Josef Průša, a Czech student and part-time musician, found the RepRap open-source 3D printer project online, built his own machine, and kept improving the design until it became the well-known Original Prusa i3. He formally founded Prusa Research in 2012 in a Prague basement and began selling kits, publishing the designs openly so the community could copy, improve and evangelize them.
The business scaled on that community: revenue rose from about €149,000 in 2014 to €70M+ in 2019, Deloitte ranked Prusa Central Europe's fastest-growing tech company in 2018 (17,118% growth), and in 2020 alone the company shipped over 100,000 printers and 500+ tonnes of filament with more than 600 staff. It deliberately brought production in-house — filament lines, injection molding and later PCB assembly — to control quality and margin.
According to its filed financial statements, FY2024 turnover reached nearly 3.6B CZK (about €140M), around 3.2B CZK from exports, with operating profit near 150M CZK. The three Průša brothers own 100% of the company; by late 2025 Vietnam's state news agency TTXVN reported annual revenue above €160M and customers including NASA, SpaceX, MIT, CERN, Mercedes and Philips.
What has to be true
- Open-sourcing the printer design turned every customer and maker into a brand evangelist, eliminating the marketing and sales spend most hardware startups need.
- Selling reliable, premium machines with strong support justified higher prices than commodity competitors, protecting margins as the market grew.
- Vertical integration — filament, injection molding, PCBs — cut dependence on suppliers and kept learning and profit inside the company.
- Refusing outside capital let Průša keep long-horizon bets like the XL toolchanger and community platforms without investor pressure for quarterly growth.
What can be applied
Openness can be a growth engine, not a giveaway: by open-sourcing designs and building community trust, Prusa let customers market the product while vertical integration kept the margin at home.
Aftermath
As of December 2025 Prusa Research was still growing, founder-owned and bootstrapped. FY2024 results showed near-record turnover of ~3.6B CZK, almost all from exports, while Chinese rivals like Bambu Lab pushed it to accelerate R&D and build a professional segment: the company hired its first commercial director in 2024 and launched the HT90 high-temperature and Core One machines aimed at pro users. TTXVN reported revenue above €160M a year, 1,200+ employees and adoption at NASA, SpaceX, MIT, CERN, Mercedes and Philips.
Sources
- The great recap of 2020 in Prusa Research and plans for 2021
- Český výrobce 3D tiskáren roste i přes boj s Čínou. Průša loni utržil skoro čtyři miliardy
- 3D printing whiz Josef Průša named youngest Czech 'Entrepreneur of the Year' in history
- Từ sinh viên âm nhạc đến biểu tượng công nghệ in 3D tại châu Âu
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