Artillery M1 Pro S1 enclosed CoreXY 3D printer shown in the official product listing

Artillery M1 Pro S1 Review (2026): Better Revision, Same Caution

Verdict: The Artillery M1 Pro S1 is the version to consider if you want this 260 mm, actively heated CoreXY platform: it refines the original machine's filament path, extruder, chamber sensing, bed, and control software. The value case is strong on paper, but thin independent testing, unavailable official-store stock, and unresolved support questions make it a cautious buy rather than a default recommendation.

Research disclosure: JCPRINTFARM has not hands-on tested the M1 Pro S1. This review is based on Artillery's exact-model product listing and M1-series support documentation, plus independent and retailer-linked technical analyses checked on October 2, 2026. Published speed, accuracy, temperature, noise, camera, and material figures are manufacturer claims—not JCPRINTFARM benchmark results.

What the Artillery M1 Pro S1 is

The M1 Pro S1 is Artillery's revised enclosed CoreXY printer with a 260 × 260 × 260 mm build volume, a 320°C-rated nozzle, a bed rated to 120°C, and an actively heated chamber rated to 60°C. Artillery also advertises automatic calibration, a camera with monitoring features, closed-loop fan control, and motion limits of 600 mm/s and 20,000 mm/s².

The S1 suffix matters. Artillery sells it as its own model and documents an upgrade path from the earlier M1 Pro. Support material identifies revised filament routing, chamber-sensor placement, extruder hardware, bed/platform parts, and AP-board software. It is therefore more than a color or accessory bundle, even though the enclosure, build volume, and headline thermal specifications remain closely related to the original machine.

That distinction also creates a buying hazard. Marketplace titles, reused photos, upgraded original units, and factory S1 units may be mixed together. Before paying, confirm the exact model label, controller/firmware branch, included S1 hardware, plug type, seller location, and warranty in writing.

Who it fits—and who should skip it

Best fit: an experienced hobbyist, prototype shop, or small production operator who regularly prints ABS, ASA, or selected reinforced materials; specifically wants active chamber heat; and is willing to qualify slicer profiles, firmware, thermal behavior, and support before relying on the machine.

Skip it if: this is your first printer, you need an appliance-like workflow, you require mature multicolor today, or you cannot obtain clear seller-backed returns and model-revision documentation. Buyers serving schools, shared workspaces, or unattended production should prioritize documented electrical safety and local service over aggressive specifications.

Key specifications in useful context

Specification Published figure Practical meaning
Motion and enclosure Fully enclosed CoreXY The bed moves on Z rather than rapidly in Y, a sensible layout for taller parts and higher acceleration.
Build volume 260 × 260 × 260 mm A useful middle size: slightly larger than common 256 mm machines without large-format floor-space and power costs.
Maximum nozzle temperature 320°C Supports a wider material range on paper, but temperature alone does not validate a filament or finished part.
Maximum bed temperature 120°C Appropriate for many ABS/ASA workflows if temperature uniformity and adhesion remain consistent across the plate.
Active chamber heat Up to 60°C The main reason to consider this printer: controlled heat can reduce warping and improve interlayer consistency in shrink-prone materials.
Maximum speed / acceleration 600 mm/s / 20,000 mm/s² Kinematic ceilings, not guaranteed production speeds for every geometry, layer height, or filament.
Calibration Automatic calibration and bed leveling Can shorten setup, but it does not remove the need to qualify first layers and dimensional accuracy.
Monitoring Camera with advertised AI detection Potentially useful for catching obvious failures; it is neither a safety interlock nor permission for careless unattended use.
Published connectivity Touchscreen, Wi-Fi, removable-media workflow Verify current firmware, slicer integration, and local-network behavior against your shop's requirements.

What the S1 revision changes

Filament routing and unloading

Artillery's upgrade documentation and third-party technical summaries describe revised PTFE routing, fixation points, and filament-ejection hardware. Those are not glamorous changes, but reducing tight bends and drag matters during repeated accelerations and retractions. The benefit should be treated as a design improvement, not proof of a measured reduction in jams across a fleet.

Extruder and thermal-sensor revisions

The S1 documentation points to an optimized extruder assembly and revised placement or fixation of the chamber temperature sensor. More representative sensing is especially important on a machine whose selling point is closed-loop chamber heat. A display reading is useful only if it tracks the relevant thermal environment consistently.

Bed, platform, and control software

Published S1 material also describes refinements to the heated bed or magnetic platform and a newer AP-board algorithm/software package. In principle, those changes target first-layer consistency, motion coordination, and long-print stability. JCPRINTFARM did not find robust controlled A/B testing that quantifies how much each revision improves results over a correctly functioning original M1 Pro.

What does not change

The broad proposition remains the same: a 260 mm enclosed CoreXY machine with a high-temperature hotend and active chamber heating. The S1 is not a larger printer, a toolchanger, or a mature automatic multicolor platform. Its value depends on whether the revisions improve daily dependability enough to make the ambitious thermal hardware usable.

Strengths

Active chamber heat is meaningful for the right materials

Many affordable enclosed printers simply retain heat generated by the bed. Artillery publishes active control up to 60°C, which is materially more relevant to ABS, ASA, and selected nylon workflows. A stable chamber can reduce gradients that contribute to corner lift, cracking, and inconsistent dimensions. It does not eliminate drying, ventilation, material qualification, or part-specific tuning.

The S1 addresses real first-generation pain points

The revision focuses on ordinary failure sources—filament drag, extruder behavior, thermal sensing, bed consistency, and controller software—rather than only adding a decorative feature. That is the right direction for long functional prints, where a modest reliability improvement is worth more than another headline speed number.

The build volume is practical

A 260 mm cube accommodates many jigs, housings, brackets, cosplay components, and prototypes that are awkward on smaller beds. It remains compact enough to fit a bench and avoids the unusually long warm-up, broad thermal gradients, and space demands of true large-format equipment.

Limitations and unresolved questions

Independent evidence is shallow

Exact-model coverage exists, but much of it is based on manufacturer or retailer data rather than long-term controlled testing. One published presentation explicitly says it is not a test, and other enthusiastic articles do not provide reproducible measurements for accuracy, chamber uniformity, failure rate, or sustained throughput. That is enough to understand features and positioning, not enough to claim proven fleet reliability.

600 mm/s is not representative throughput

Actual print time depends on volumetric flow, acceleration distance, layer settings, cooling, material, and geometry. Large ABS and ASA parts often reward stable thermal conditions and conservative motion more than peak travel speed. Compare representative sliced files at suitable quality settings instead of treating 600 mm/s as the machine's everyday output rate.

The original M1 Pro's safety report cannot simply be transferred—or ignored

An independent reviewer of an earlier M1 Pro reported accessible-metal voltage on that review unit. JCPRINTFARM has not reproduced the result, does not know its prevalence, and found no evidence establishing that the same condition applies to the factory S1. The S1 should not be accused by association, but a high-consequence allegation on the related platform makes documentation important.

Ask Artillery or the seller what electrical revisions distinguish the exact S1 unit, what compliance documentation covers it, and whether any grounding or power-supply corrective action applies. If any printer produces a shock, tingle, unusual odor, visible damage, or grounding concern, disconnect it and obtain qualified service rather than continuing to print.

Stock and support are uncertain

Artillery's exact-model page and support documentation were live when checked, but the official product endpoint reported the listed variant unavailable. That can change, and third-party sellers may still have inventory. It also means current price and delivery claims should be verified at checkout, along with who actually handles returns, parts, and warranty support.

Materials, ventilation, and operating costs

The 320°C hotend, 120°C bed, hardened-nozzle claims, enclosure, and active chamber create a plausible platform for more than PLA and PETG. They do not make every engineering polymer automatic. Nylon and many reinforced filaments require controlled drying and storage. Abrasive fillers wear nozzles and sometimes drive gears. Some high-temperature polymers need conditions beyond a 60°C chamber.

ABS and ASA workflows require suitable ventilation. The advertised activated-carbon filter may reduce some odors or compounds, but a small recirculating filter is not a universal replacement for source capture or room ventilation. Follow the filament maker's safety data and the realities of the occupied space.

Budget for warm-up time, electricity for the bed and chamber heater, replacement filters, build surfaces, nozzles, hotend parts, drying equipment, and failed qualification prints. An inexpensive purchase can become costly if profiles, parts, or support consume operator hours.

Camera, software, and daily workflow

The onboard camera and advertised anomaly detection can be useful for remote observation and timelapses. Treat detection as assistance rather than certainty: algorithms can miss a failure or stop a valid print. Safe deployment still requires proper electrical installation, material handling, smoke/fire precautions appropriate to the workspace, and a sensible supervision policy.

Confirm that the current slicer version includes a maintained M1 Pro S1 profile rather than only an original-M1 profile. Also document the exact firmware before updating. Artillery's wiki separates standard and S1-upgraded procedures, so installing files because the enclosure looks similar is an avoidable support risk.

Manual filament swaps can create simple color changes, but that is not the same as an integrated multicolor system. If automatic multicolor is a primary requirement, compare a complete, shipping ecosystem and include purge waste, change time, tubing, consumables, and maintenance.

M1 Pro S1 versus the original M1 Pro

The original Artillery M1 Pro review covers the base platform, its strengths, and its caution points. Between the two, the factory S1 is the more defensible new purchase because its revisions directly target feeding, thermal sensing, extrusion, bed behavior, and software. An original can potentially be upgraded, but the labor, compatibility checks, firmware process, and responsibility for the final configuration reduce the attraction unless the price is compelling.

On the used market, neither title is sufficient. Request photos of the machine label, controller information, installed firmware, and any upgrade parts. A seller calling an original unit “S1-ready” is not the same as a factory S1 or a fully documented upgrade.

Realistic alternatives

  • QIDI Plus4: the closest comparison when active chamber heat and engineering-material capability are central, with a different support and software ecosystem.
  • Creality K2 Pro: consider it for a current enclosed platform with broader market visibility, while still checking the exact bundle and workflow.
  • Bambu Lab P1S: a more mature mainstream workflow for PLA, PETG, and some enclosed-material use, but without the S1's advertised active 60°C chamber.
  • Flashforge Adventurer 5M Pro: a compact enclosed alternative when easy mainstream-material printing matters more than high chamber temperature.

If the real requirement is repeatable finished parts rather than another printer to maintain, send JCPRINTFARM the project details for a production-path review.

Lifecycle and availability in October 2026

The M1 Pro S1 remained represented by a live official exact-model page, its own official product record, and model-specific upgrade/support documentation on October 2, 2026. The official product record showed the variant unavailable at that check. Treat third-party inventory as seller-specific: verify country stock, voltage and plug, return destination, warranty party, and replacement-part availability before ordering.

Final verdict

The Artillery M1 Pro S1 is a thoughtful revision of an unusually ambitious value platform. Active 60°C chamber heating, a 320°C hotend, 260 mm CoreXY capacity, and revisions aimed at feeding and thermal consistency make it genuinely interesting for experienced operators. The honest reservation is evidence quality: specifications are plentiful, while measured long-term exact-model testing and support clarity remain limited. Buy only with revision certainty, strong returns, and time to qualify it; otherwise choose the more mature alternative that best matches your materials.

Sources

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