3D Printing InfoPrinter comparison
QIDI Plus4 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 QIDI Plus4 comparisonsMore Rat Rig V-Core 4.1 comparisons
| Property | QIDI Plus4COREXY | Rat Rig V-Core 4.1COREXY |
|---|---|---|
| Identity | ||
| Brand | QIDI | Rat Rig |
| Class | COREXY | COREXY |
| Identity & Market | ||
| Manufacturer & exact marketed model name (verify the exact product identity first) | QIDI Plus4, sold as "Plus4 3D Printer". QIDI's own wiki files it under X-Plus4[1][2] | Rat Rig V-Core 4.1, described by Rat Rig as a large-format open CoreXY 3D printer kit[3] |
| Release date (announcement and actual shipping) | Announced September 2024; QIDI ran launch promotional pricing in the week of 20-27 September 2024 (secondary reporting, not a QIDI press release)[4] | Not documented |
| Street price (USD; dated snapshot per entry) | $649.00 on us.qidi3d.com for the Plus4 + 1 filament variant against a $799.00 compare-at price; $699.00 on qidi3d.com against $799.00. Checked Aug 2026[1][2] | Not documented |
| Variants & sibling models — and how to tell them apart (spec-contamination risk) | Two purchasable variants: Plus4 + Filament x1 at $649 and Plus4 Combo + Filament x1 at $799 (Combo adds the QIDI Box multi-material unit). Distinct from the older X-Plus 3 (280x280x270, 350 °C) and from the newer Plus5 (320x320x300)[2][1] | 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[3] |
| Market position: superseded? successor announced? | Superseded at the top of the large-format line by the Plus5, launched 5 August 2026 with 18% more build volume; Plus4 still listed and in stock Aug 2026[5][6] | Current revision, replacing the V-Core 4; Rat Rig sells a 4.1 upgrade kit for existing V-Core 4 machines[3] |
| Physical & Frame | ||
| Build volume X×Y×Z (mm) — advertised vs actually usable | 305 x 305 x 280 mm advertised. No independently measured usable envelope found[1][4] | 300 x 300 x 300, 400 x 400 x 400 or 500 x 500 x 500 mm. Sortable value is the 300 mm kit[3] |
| Machine footprint (mm) & clearance needed (cable/spool overhang) | 505 x 487 x 550 mm[4] | 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[3] |
| Net weight (kg) | 32 kg gross (3DJake). QIDI does not publish a net weight on the product page[4] | Kit weight 35 kg (300), 45 kg (400), 55 kg (500)[3] |
| Frame construction & material | Enclosed CoreXY chassis with double-layer chamber insulation; QIDI does not publish a frame material breakdown[1] | 30-series aluminium extrusion; the 4.1 adds a steel X-axis gantry for rigidity[3] |
| Enclosure: open / enclosed; panel material; door/lid | Fully enclosed, double-layer insulated chamber with second-generation active heating to 65 °C[1][4] | Open frame in the base kit[3] |
| Passive chamber temperature reached (if enclosed; measured values preferred) | 65 °C, actively heated by a 400 W heater which QIDI says reaches setpoint in about 8 minutes (manufacturer claim)[1][4] | Not documented |
| Kinematics & Motion Hardware | ||
| Kinematics (bedslinger i3 / CoreXY / other) | CoreXY[4] | CoreXY; Hybrid CoreXY and IDEX are configuration options[3] |
| Z-axis: leadscrew count & type, sync mechanism, anti-backlash | Dual independent Z motors on 10 mm linear shafts and screws[1] | Not documented |
| Speed & Acceleration | ||
| Max print speed (claimed, mm/s) | 600 mm/s (manufacturer claim, tool-head maximum)[4] | Not documented |
| Max acceleration (claimed, mm/s²) | <=20,000 mm/s2 (manufacturer claim)[4] | Size-dependent: 15,000 mm/s2 at 300 mm, 12,000 at 400 mm, 8,000 at 500 mm (manufacturer claims)[3] |
| Extruder | ||
| Type (direct drive / bowden) & design name | Direct drive with hardened steel dual gears, 1.75 mm filament[1][4] | Full-metal skeleton toolhead, new in the 4.1[3] |
| Hotend & Nozzle | ||
| Hotend design (proprietary/standard; quick-swap mechanism?) | Second-generation 80 W bimetal hotend with a multi-metal composite hardened-tip nozzle; 0.4 mm standard, 0.2/0.5/0.8 mm optional[1][4] | Not documented |
| Max nozzle temp claimed AND firmware max temp limit (both values) | <=370 °C claimed. No firmware max_temp verified for this model[1][4] | 350 °C maximum nozzle temperature (manufacturer claim)[3] |
| Heater cartridge power (W) | 80 W hotend heater (manufacturer figure)[1] | Not documented |
| Stock nozzle size & sizes included in box | Not documented | 0.4 mm hardened steel and 0.6 mm included[3] |
| Heated Bed & Surface | ||
| Max bed temp claimed AND firmware limit | Conflicting manufacturer figures: QIDI's own Plus4 page states a 100 °C bed temperature, 3DJake's spec table states <=120 °C. Not resolved; the lower vendor-published figure is used as the sortable value[1][4] | 120 °C maximum heatbed temperature (manufacturer claim). The 400 and 500 sizes get 8 mm thick beds in the 4.1[3] |
| Bed surface (material, texture, coating), single/double-sided | 6 mm aluminium-substrate heated bed with a double-sided textured PEI plate[1][4] | Not documented |
| Leveling & Z-Offset | ||
| Auto bed leveling: probe technology (inductive / strain gauge / load cell / touch probe) | Full-auto calibration; QIDI markets "hands-free automatic" levelling and does not name the probe technology on the product page[1][4] | Not documented |
| Filament Handling & Detection | ||
| Filament runout sensor (type, location) | Filament run-out sensor, plus a filament cutter and filament tangle detection (tangle mechanism not described)[4] | Not documented |
| Multi-material/multi-color capability or official upgrade path | QIDI Box multi-material unit supported; sold bundled as the Plus4 Combo[1][2] | Not documented |
| Cooling & Air Handling | ||
| Part-cooling fan(s): count, size, ducting design | Auxiliary part-cooling fan plus a chamber circulation fan; fan sizes and duct design not published[4] | Improved part cooling, listed by Rat Rig as one of the 4.1 changes[3] |
| Electronics & Power | ||
| Input voltage (110/220 V, switch or auto) | 100-240 VAC, 50/60 Hz[4] | Not documented |
| Total rated power draw | 450 W plus 400 W for chamber heating (rated)[4] | Not documented |
| Firmware & Openness | ||
| Firmware base & current version (Klipper fork / Marlin fork / proprietary) | Klipper v0.12, described by QIDI as open source. Fork details and current release not published on the product page[1] | RatOS 2.1 (Rat Rig's Klipper distribution)[3] |
| Connectivity, UI & Camera | ||
| Display: size, type, touch? | 5-inch touchscreen, 800 x 480[1][4] | Not documented |
| WiFi (band/standard), Ethernet, USB ports, SD/flash-drive | Wi-Fi 2.4 GHz, Ethernet, USB[1][4] | Not documented |
| Cloud service & phone app; LAN-only mode possible? | Mobile and computer control, remote cloud or LAN-only operation[1] | Not documented |
| Camera: built-in / optional? Resolution & framerate (verify — marketing often omits real fps) | Built-in low-frame-rate camera, up to 1080p, timelapse supported[1][4] | Not documented |
| Calibration Routines & QoL | ||
| Assembly level & time from unbox to first print | QIDI claims about 10 minutes from unbox to printing[1] | Self-assembly kit; the 4.1 ships pre-made cables that need no crimping, with rewritten step-by-step build documentation[3] |
| Power-Loss & Interruption Recovery | ||
| Power-loss recovery: mechanism (how is state saved? capacitor / eeprom / file on shutdown?) | Power-loss recovery listed; mechanism not published[4] | Not documented |
| Materials Support | ||
| Officially supported filament list | PLA, ABS, ASA, PETG, TPU, PA, PC, PA-CF/GF, PET-CF/GF, PPA-CF/GF, PPS-CF and other CF/GF-filled polymers[1][4] | 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[3] |
| Reliability, Support & Ecosystem | ||
| Warranty length & support reputation (evidence, not vibes) | 1-year coverage, 14-day no-reason return, 30-day price protection[1] | 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
- QIDI Plus4 product page (global store) qidi3d.com · 2026-08 · vendor
- QIDI Plus4 product page (US store) us.qidi3d.com · 2026-08 · vendor
- Rat Rig V-Core 4.1 product page ratrig.com · 2026-08 · vendor
- QIDI Tech Plus4 technical data table 3djake.com · 2026-08 · vendor
- QIDI Plus5 product page (US store) us.qidi3d.com · 2026-08 · vendor
- QIDI Plus5 launch write-up 3dprintbeginner.com · 2026-08 · review