3D Printing InfoPrinter comparison
Phrozen Sonic Mini 8K S vs Rat Rig V-Core 4.1
Compare hardware, build volume, printing specifications, dated prices and sources.
2 selected · all documented properties
Open these two in the interactive comparisonMore Phrozen Sonic Mini 8K S comparisonsMore Rat Rig V-Core 4.1 comparisons
| Property | Phrozen Sonic Mini 8K SRESIN | Rat Rig V-Core 4.1COREXY |
|---|---|---|
| Identity | ||
| Brand | Phrozen | Rat Rig |
| Class | RESIN | COREXY |
| Identity & Market | ||
| Manufacturer & exact marketed model name (verify the exact product identity first) | Phrozen Sonic Mini 8K S 7.1" LCD 3D Printer. Manufacturer number 51010040501102[1][2][3] | Rat Rig V-Core 4.1, described by Rat Rig as a large-format open CoreXY 3D printer kit[4] |
| Street price (USD; dated snapshot per entry) | $270.00 on us.phrozen3d.com, backordered with an end-of-September ETA, checked Aug 2026. The collection page rendered it as unavailable on the same day[3][2] | Not documented |
| Variants & sibling models — and how to tell them apart (spec-contamination risk) | Phrozen's 7.1-inch line is easy to confuse: the Sonic Mini 8K S ($270) sits beside the older Sonic Mini 8K ($340, sold out) and the 5.5-inch Sonic Mini ($129.99). The 10.1-inch Sonic Mighty family is a different size class entirely. The 8K S is the only one of the group with a single linear rail and a lead screw rather than a ball screw[2][1][3][5] | Three sizes, all at the same base-kit price. Acceleration is the size-dependent figure and the one most often mis-quoted: 15,000 mm/s2 at 300 mm, 12,000 at 400 mm, 8,000 at 500 mm. IDEX is a configuration option and changes the usable area per toolhead (copy mode 150x150x300 at the 300 size, mirror mode 95x95x300). Base kit excludes electronics. Rat Rig prices the base kit only in EUR (EUR 873.90 on sale from EUR 971.00, Aug 2026); no USD list price is published, so no USD street price is recorded here[4] |
| Market position: superseded? successor announced? | Not documented | Current revision, replacing the V-Core 4; Rat Rig sells a 4.1 upgrade kit for existing V-Core 4 machines[4] |
| Physical & Frame | ||
| Build volume X×Y×Z (mm) — advertised vs actually usable | 165 x 72 x 170 mm[1][3] | 300 x 300 x 300, 400 x 400 x 400 or 500 x 500 x 500 mm. Sortable value is the 300 mm kit[4] |
| Machine footprint (mm) & clearance needed (cable/spool overhang) | 290 x 290 x 430 mm[1][3] | 623.2 x 583 x 785 mm (300); 723.2 x 683 x 885 mm (400); 823.2 x 783 x 985 mm (500). Sortable value is the 300 mm kit[4] |
| Net weight (kg) | 10 kg[1][3] | Kit weight 35 kg (300), 45 kg (400), 55 kg (500)[4] |
| Frame construction & material | Black textured housing with a neon-green plastic cover[1] | 30-series aluminium extrusion; the 4.1 adds a steel X-axis gantry for rigidity[4] |
| Enclosure: open / enclosed; panel material; door/lid | Open-frame MSLA with a UV-blocking plastic cover[1] | Open frame in the base kit[4] |
| Kinematics & Motion Hardware | ||
| Kinematics (bedslinger i3 / CoreXY / other) | MSLA, single Z axis on one linear rail with a lead screw, straight-lift peel[1][3] | CoreXY; Hybrid CoreXY and IDEX are configuration options[4] |
| X-axis guide type (rods / linear rails / V-wheels; size) | One linear rail; lead screw (not a ball screw)[1][3] | Not documented |
| Speed & Acceleration | ||
| Max acceleration (claimed, mm/s²) | Not documented | Size-dependent: 15,000 mm/s2 at 300 mm, 12,000 at 400 mm, 8,000 at 500 mm (manufacturer claims)[4] |
| Extruder | ||
| Type (direct drive / bowden) & design name | Not documented | Full-metal skeleton toolhead, new in the 4.1[4] |
| Hotend & Nozzle | ||
| Max nozzle temp claimed AND firmware max temp limit (both values) | Not documented | 350 °C maximum nozzle temperature (manufacturer claim)[4] |
| Stock nozzle size & sizes included in box | Not documented | 0.4 mm hardened steel and 0.6 mm included[4] |
| Heated Bed & Surface | ||
| Max bed temp claimed AND firmware limit | Not documented | 120 °C maximum heatbed temperature (manufacturer claim). The 400 and 500 sizes get 8 mm thick beds in the 4.1[4] |
| Cooling & Air Handling | ||
| Part-cooling fan(s): count, size, ducting design | Not documented | Improved part cooling, listed by Rat Rig as one of the 4.1 changes[4] |
| Electronics & Power | ||
| Input voltage (110/220 V, switch or auto) | 24 V DC, 2 A[3] | Not documented |
| Total rated power draw | 48 W maximum system power[3] | Not documented |
| Firmware & Openness | ||
| Firmware base & current version (Klipper fork / Marlin fork / proprietary) | Not named by Phrozen. Native file format .PRZ; compatible slicers CHITUBOX, Lychee and VoxelDance Tango[1][3] | RatOS 2.1 (Rat Rig's Klipper distribution)[4] |
| Connectivity, UI & Camera | ||
| Display: size, type, touch? | 3.5-inch touch panel (control panel — not the masking LCD, see W1)[3] | Not documented |
| WiFi (band/standard), Ethernet, USB ports, SD/flash-drive | USB only[1][3] | Not documented |
| Calibration Routines & QoL | ||
| Assembly level & time from unbox to first print | Not documented | Self-assembly kit; the 4.1 ships pre-made cables that need no crimping, with rewritten step-by-step build documentation[4] |
| Materials Support | ||
| Officially supported filament list | 405 nm photopolymer resin; no closed compatibility list published[1] | PLA, PETG, ABS, ASA, TPU, PET, PA, PC, PVA, PLA-CF, PETG-CF, ABS-GF, ASA-CF, PA6-CF, PA6-GF, PAHT-CF, PPA-CF, PET-CF[4] |
| Resin & MSLA | ||
| Masking LCD | 7.1-inch 8K monochrome masking LCD, XY pixel pitch 22 um. Phrozen does not publish the pixel count for this model[1][3] | Not documented |
| Light source | Linear projection LED module. Wavelength not published for this model[1][3] | Not documented |
| Vertical print speedmm/h | Max 80 mm/h (manufacturer claim). Phrozen does not state the layer height or resin type the figure assumes[3] | Not documented |
| Layer height range | 0.01-0.30 mm[3] | Not documented |
| Release film | FEP film — note this is plain FEP, whereas the Sonic Mighty Revo 14K ships nFEP. No rated life published[3][5] | Not documented |
Manufacturer claims, independent measurements, packages and test conditions retain their source wording. FDM linear speed and resin vertical speed use different units and are not directly comparable. Unknown values are marked “Not documented”. Prices and source dates remain historical snapshots; check the linked guide for product details. Differences highlight text, not a universal winner.
Sources for this comparison
- Phrozen Sonic Mini 8K S technical data table 3djake.com · 2026-08 · vendor
- Phrozen US 3D printer collection (live prices and stock) us.phrozen3d.com · 2026-08 · vendor
- Phrozen Sonic Mini 8K S 7.1" LCD 3D Printer product page us.phrozen3d.com · 2026-08 · vendor
- Rat Rig V-Core 4.1 product page ratrig.com · 2026-08 · vendor
- Phrozen Sonic Mighty Revo 14K 10.1" LCD 3D Printer product page us.phrozen3d.com · 2026-08 · vendor