Fuse 1+ 30W vs RMS220.
The spec sheet.

What the numbers mean

The RMS220 build envelope is 2.06× larger by volume than the Fuse 1+. For a buyer printing large or many parts per job, that is the single most consequential spec on this page. The 75 W laser allows the larger chamber to fill at a rate Raise3D quotes as 2.2 L/h at 20% packing density — meaningfully faster volumetrically than the 30 W Fuse 1+ engine, which has to sinter a smaller envelope but does so with a quarter of the optical power.

The integrated nitrogen generator on the RMS220 is the structural differentiator. The Fuse 1+ requires an external nitrogen supply when running materials such as Nylon 11 that need an inert atmosphere — a fact documented in the Formlabs community forum by user finman in October 2024, who reported being sold a Fuse 1+ without disclosure that PA11 required inert gas the machine could not provide on its own. The RMS220 collapses that requirement into the chassis.

What the Fuse 1+ holds is operational maturity at a smaller scale. A 30 W laser is well-characterised across more than three thousand units in the field; thermal profiles and powder behaviour at 30 W are not theoretical. The Raise3D engine, at 75 W, is documented in a pre-production 3Dnatives lab review and in the manufacturer's own spec sheet, but not yet in a corpus of customer field data.

The Open Material question is the same question on both machines

Both manufacturers technically allow third-party powder. Both require a paid license to unlock it. The Fuse 1+ license fee is not publicly priced by Formlabs and is reported on the community forum at approximately twelve thousand euros — a figure Formlabs has not disputed publicly. The RMS220 license is a published-existing program, but specific consumer-facing pricing was not located in the trade press at the time this dossier was compiled.

The implication for unit economics is identical: cost-of-ownership models that assume open-market powder pricing without factoring in the license fee will under-cost the machine by a meaningful amount. Cost-model both stacks with the license fee in.

The refresh-rate gap on the Fuse 1+ is documented in three independent forum accounts between 2022 and 2024 (users LEADNAV, CARLAYERS, Andreasemilsson) where production-condition Nylon 12 GF required closer to 70 %+ new powder per print rather than the 30–50% marketed. If the buyer's cost-per-part calculator assumes the marketing figure on the Fuse 1+, the calculator is wrong by roughly 75 % on the powder line item. For the RMS220, equivalent third-party field data does not yet exist; the manufacturer's claim is unverified by independent operators.

The honest stack price

At printer-only entry, the Fuse 1+ is cheaper by roughly nine thousand US dollars. At a complete production-grade stack, Formlabs' own comparison page argues the picture inverts: the Raise3D stack, once you factor in a third-party media blaster and the cost of professional slicing software (Magics, $12k/yr) that PreForm provides free, lands closer to seventy thousand dollars while the Fuse 1+ complete stack lands at $52,942.

This is Formlabs' framing of the comparison. It is correct on the individual line items it lists. It does not include the European Fuse 1+ Open Material License fee (reported at ~€12,000) which Formlabs customers pay if they want to use third-party powder, nor the recurring premium of Formlabs-branded powder over the open market. The buyer who plans to run only Formlabs-branded materials should accept the Formlabs framing. The buyer who plans to run third-party Nylon 12 (open-market price ~$35/kg) should rebuild the model with the OML fee, powder differential, and the multi-year service-plan delta in.

The RMS220 runs on a standard 230V / 16A single-phase socket. So does the Fuse 1+. Neither requires a dedicated industrial mains feed. For a workshop running a 16A circuit on a normal European or US installation, the install footprint is comparable.

The integrated nitrogen generator on the RMS220 removes a discrete piece of equipment from the buyer's checklist: the external N&sub2; generator or cylinder rack the Fuse 1+ requires for Nylon 11 work. A typical small-shop external nitrogen generator runs in the range of $4,000–$8,000 at purchase and adds ongoing service and consumable cost. Buyers comparing the two stacks should add that line item to the Fuse 1+ column when modelling against the RMS220.

The post-processing footprint is different. Formlabs' Fuse Sift + Fuse Blast is a tightly integrated, validated workflow with a four-year operational record. Raise3D's C220-P cleaning station handles depowdering and sifting; Raise3D does not currently ship a media-blasting unit, which means a Raise3D shop targeting consumer-grade surface finish will run a third-party media blaster — including, ironically, the Formlabs Fuse Blast, which Formlabs itself notes in its comparison page is being used by some Raise3D buyers.

The maturity gap on software is significant. PreForm is free, Windows and Mac, and four years into its production deployment on the Fuse line. ideaMaker for SLS is new. Multiple trade-press reports including Formlabs' own competitor comparison flag that RMS220 buyers targeting production-grade packing density typically supplement with Materialise Magics, a $12,000/year subscription — an annual recurring cost the Fuse 1+ buyer does not face.

The service-plan column on the RMS220 is empty not because Raise3D will not offer a plan but because no public pricing exists at the time of writing. The Fuse 1+ service-plan pricing ($4,500/yr to $19,700/5yr) is the buyer's reference for what equivalent coverage might cost on the RMS220 — informed by Formlabs' four-year experience on what these machines actually need.

The Fuse 1+ has shipped 3,000+ commercial units since 2022 (Formlabs published figure). Four years in production is enough time for failure modes to surface. Some of them have. See Expediente 02 for the documented public-record account: a December 2022 firmware update that damaged hardware on at least one operator's machines, a chamber design defect confirmed by Formlabs in December 2024, an LPU failure pattern on the adjacent Form 3 line, and a multi-year refresh-rate misalignment between marketing claims and field measurement.

The RMS220 has shipped 0 commercial units. First commercial deliveries are scheduled for Q1 2026 (Raise3D, Hernandez interview with 3D Printing Industry, January 2026). The first unit ships to Kimboshi in Japan. Early European adopters identified by Raise3D include an automotive supplier in Germany, an ice-cream-equipment producer in Italy, and a medical user in the United Kingdom. There is no field record yet on which to base a four-year confidence interval.

What the buyer should not do: extrapolate marketing claims forward into the field record they will create. What the buyer should do: accept that the RMS220 is, in mid-2026, a credible technical proposition with a thin operational corpus, and the Fuse 1+ is a mature platform with a documented public-record set of failure modes the buyer can read and assess.