On our blog, we usually focus on our desktop 3D printers and various upgrades like INDX, accessories, and firmware versions, but there has been a lot of movement in our industrial line as well. We usually communicate these updates directly to our B2B partners, but we thought it would be great to share an update about the HT90 with the wider public, too.

The HT90 has been doing incredibly well, production has ramped up significantly, and we have even opened a brand new factory near Prague to meet the demand (it’s actually one of three factories we opened this year). Here is a look at how the machine has evolved over the last twelve months.

Versatile Delta Printer

In a world full of CoreXY 3D printers, a delta still makes a lot of sense. We introduced the Prusa Pro HT90 in 2024 to prove that you didn’t need a six-figure budget, a dedicated facility, or a locked-down ecosystem to get the most out of advanced filaments and print super-polymers like PEEK and ULTEM.

We built a compact, efficient Delta machine with a 90°C actively heated chamber and 500°C nozzle to bridge the gap between “desktop” and “industrial.” It was a deliberate engineering decision: the delta architecture allowed us to keep all critical components safely separated from the heat zone to ensure longevity even during prolonged, extensive use. This combination of affordable performance, reliability and wide material support enabled companies to create projects that wouldn’t be otherwise possible.

One of the best examples is Angel Aerial Systems, a company that built its whole operation around five HT90s. Their state-of-the-art drones, capable of up to two hours of hover time (3 to 6 times longer than traditional quadcopters), would have never existed without the HT90. CEO Will Hasting explains the role of the HT90 in their operation: “We constantly balance size, weight, durability, and thermal performance, under tight timelines and high reliability demands. We print our entire airframe on the HT90 – including wings, hub structures, and more. Currently, nothing else on the market matches the HT90’s performance-to-cost ratio.“ Read the full story here.

Angel Aerial System is just one of many companies that extensively use the HT90 as a great tool to bring down the costs of research, development and manufacturing.

Taming the “Unstickable” Materials

Industrial materials are notoriously finicky. Polypropylene (PP), for example, is the holy grail for parts with great chemical and fatigue resistance – think fuel tanks or living hinges. But it usually struggles to stick to print beds. One of the popular solutions was to cover the print sheet with sticky tape – not the most elegant approach. And there are more challenges.

To support the HT90’s material library, we have introduced three specialized print surfaces designed to make printing with the HT90 reliable across the entire polymer range.

• The PP (Polypropylene) Sheet: Polypropylene is essential for chemical-resistant parts that are really difficult to print due to warping. Our new texture-coated PP sheet creates a reliable chemical bond with the material, eliminating the need for packing tape or glue sticks.
• The HighTemp Sheet: Engineered for “super-polymers,” this sheet is designed to withstand the thermal stress of printing PEEK, PEKK, and PEI (Ultem) without degrading, ensuring consistent first layers even at chamber temperatures of 90°C.
• The Satin Sheet: This sheet offers excellent adhesion for everyday materials like PLA and PETG without the need for separation layers, while providing a professional matte finish that effectively hides layer lines.

The Maintenance Kit

Every machine requires at least basic maintenance from time to time. To make these tasks easier, we launched the official Prusa Pro HT90 Maintenance Kit.

This comprehensive set includes everything your team needs, from specialized nozzle-changing tools and belt tensioners to lubricants and cleaning supplies.

Desiccant & Memmert Cooperation

Materials like PA-CF (Nylon Carbon Fiber) and PEEK are highly hygroscopic; they suck moisture out of the air in minutes, destroying the mechanical strength of your parts through hydrolysis.

To solve this, we partnered with Memmert, a German company that’s been building laboratory ovens for decades. Their UF30 and UF55 models reach 300°C with precise airflow control, exactly the capability needed to actually remove moisture from high-performance filaments before they hit the printer.​​

The intended workflow is simple and efficient: dry the PEEK at 130°C for four hours in the oven, transfer it immediately to the Prusa Pro Drybox (which monitors humidity and temp), and feed the filament directly into the HT90.

Even Better Printer with Firmware Updates

We released 5 major firmware updates based on the customers’ feedback, focusing on streamlining the user experience and reducing downtime. Key improvements include optimized thermal management for faster chamber heat-up times and a completely redesigned error handling system, which now provides clear, actionable diagnostics instead of codes.

Importantly, for facilities with strict security protocols, the HT90 retains fully offline functionality – updates can be flashed directly via USB without ever connecting the machine to a network.

Ongoing support

It is one thing for us to say that the printer works and another thing to have it tested – and we’re happy to say that the HT90 passed with flying colours! VoxelMatters took on the ultimate question: “Can a Prusa 3D printer print PEEK?” Their deep-dive review confirmed that the HT90 successfully bridges the gap between desktop accessibility and high-performance polymer processing. Ultimately, VoxelMatters proved the HT90’s ability to handle materials that usually require machines ten times the price. Plus, the HT90 demonstrates how even an industrial-grade 3D printer can look good: this year, it received the prestigious Red Dot Design Award.

3D Printing Industry (3DPI) praised the machine’s reliability, specifically highlighting the 90°C actively heated chamber as a game-changer for professional FDM printing, ensuring layer adhesion for large, complex technical parts.

We understand that in a production environment, time is the most expensive resource. To support this, we have massively expanded our HT90 Help Section, adding dozens of articles and visual guides that cover everything from maintenance to specific material troubleshooting.

But for businesses where downtime is not an option, we are introducing Prusa Pro Premium Support featuring direct access to a specialized team of industrial experts, Guaranteed SLAs, Priority Repair & Hot-Swap, and On-Demand Services, such as access to remote installation, on-site maintenance, and custom training sessions.

Connected Development

Needless to say, our Pro line brings benefits even to our desktop 3D printers and will continue to do so in the future. We have dedicated teams for Pro and desktop 3D printers, but the knowledge, research, and development are shared, of course. For instance, the cooling and heating features of the CORE One+ and CORE One L are directly connected to the HT90 development. This way, both product lines can perfectly coexist and complement each other.

Here’s a great example: even though the CORE One series with the 55/60°C heated chamber cannot hit the same temperatures as the HT90, you can upgrade it with the upcoming 400 °C HT Hotend, and still unlock a wider range of previously incompatible materials.

And we continue the hard work to make it even better. 2026 will be truly important for our Pro line – you can see what we have in store at the Prusa Pro website. Stay tuned!