R3 Printing Emerges From Stealth After Eight Years, Ships R3 Printer Ultra August 31

Eight Years in the Quiet

Most 3D printer startups announce first and debug later. R3 Printing did the opposite. Founded by Paul Sieradzki and Petra Wood after years running a 3D printing service, the Los Angeles company spent eight years in stealth building the industrial FFF machines they wished had existed when they were running production jobs.

That patience now has a release date. The R3 Printer Ultra begins shipping on August 31, 2026. The standard R3 Printer is already in customer hands.

What the Machines Can Process

The base R3 Printer handles ASA, PC, PA, CoPA, PP, PPS, PPE, PPA, PVDF, ABS, PLA, PETG, PCTG, HIPS, PVA, and BVOH. The Ultra pushes chamber temperature to 150C and the bed to 235C, adding high-performance polymers such as PEEK, PEKK, PEI/Ultem, TPI, PSU, PES, and PPSU to the list.

That is a deliberately broad materials palette. Sieradzki and Wood designed the line for shops that need one machine to cover everything from everyday prototyping to heat-resistant end-use parts.

Made in the USA, Built for Production

R3 says it is one of the only American industrial 3D printing companies that designs and manufactures its systems in the United States. The pitch is not just patriotism. The founders argue that domestic engineering and support matter when a printer is expected to run production shifts rather than hobby prints.

The timing is interesting. Reshoring, supply chain shocks, and defense interest in domestic additive manufacturing have created demand for exactly this kind of no-nonsense industrial FFF system. Whether R3 can compete with established names like Stratasys and UltiMaker will depend on reliability, service, and real throughput over the next year.

For now, the company has done what few in this industry manage: it shipped a product before it became famous.