3D Printing InfoPrinter comparison
LulzBot TAZ Pro Long Bed vs Rat Rig V-Core 4
Compare hardware, build volume, printing specifications, dated prices and sources.
2 selected · all documented properties
Open these two in the interactive comparisonMore LulzBot TAZ Pro Long Bed comparisonsMore Rat Rig V-Core 4 comparisons
| Property | LulzBot TAZ Pro Long BedBEDSLINGER | Rat Rig V-Core 4COREXY |
|---|---|---|
| Identity | ||
| Brand | LulzBot | Rat Rig |
| Class | BEDSLINGER | COREXY |
| Identity & Market | ||
| Manufacturer & exact marketed model name (verify the exact product identity first) | LulzBot TAZ Pro Long Bed 3D Printer[1] | Rat Rig V-Core 4, sold in the US as "RatRig V-Core 4 3D Printer Kit"[2] |
| Street price (USD; dated snapshot per entry) | $7,995.00 at MatterHackers, listed as currently unavailable, checked Aug 2026[1] | $2,319.99 at Fabreeko for the fully-specified US kit (price includes shipping and duty in the continental USA), Batch 4, checked Aug 2026. 300 mm ABS-parts variant in stock, 400 mm down to one unit. Rat Rig's own base kit is priced separately in EUR[2][3] |
| Variants & sibling models — and how to tell them apart (spec-contamination risk) | Not simply a longer TAZ Pro. The Long Bed ships the Asteroid 285 tool head with a 1.2 mm nozzle, a 0.3-0.9 mm equipped layer range, an 80 °C bed cap (vs 110 °C), 150 mm/s travel (vs 300) and BLTouch 32-point mesh levelling (vs 4-point contact). Bed material also differs: blue spring-steel magnetic flex rather than glass with PEI film[1][4] | Three sizes (300, 400, 500 mm cubes) and three motion configurations: Standard CoreXY, Hybrid CoreXY (+$149.99, adds two motors to Y), and IDEX with two independent toolheads (+$450.00). Superseded by the V-Core 4.1. Raspberry Pi and enclosure panels are not included[2][3] |
| Market position: superseded? successor announced? | Not documented | Superseded by the V-Core 4.1, which adds a steel X gantry, a full-metal toolhead, improved part cooling, 8 mm beds on the 400 and 500 sizes and pre-made cables. Rat Rig sells a 4.1 upgrade kit for existing V-Core 4 owners[3] |
| Physical & Frame | ||
| Build volume X×Y×Z (mm) — advertised vs actually usable | 282 x 582 x 285 mm[1] | 300 x 300 x 300, 400 x 400 x 400 or 500 x 500 x 500 mm. Sortable value is the 300 mm kit[2][3] |
| Frame construction & material | Open frame; GT2 belt drive with Igus SST rods and polymer bushings[1] | 30-series aluminium extrusion with printed ABS structural parts[2][3] |
| Enclosure: open / enclosed; panel material; door/lid | Open frame, no enclosure[1] | Open by default; enclosure panels sold separately[2] |
| Kinematics & Motion Hardware | ||
| Kinematics (bedslinger i3 / CoreXY / other) | Cartesian bedslinger[1] | CoreXY, or Hybrid CoreXY, or Hybrid CoreXY IDEX depending on the configuration ordered[2] |
| Stepper drivers (exact model e.g. TMC2209; UART/SPI; sensorless homing?) | Trinamic TMC2130[1] | TMC2209[2] |
| Speed & Acceleration | ||
| Max travel speed | 150 mm/s maximum travel speed, firmware-limited[1] | Not documented |
| Extruder | ||
| Type (direct drive / bowden) & design name | Asteroid 285 tool head[1] | LDO Orbiter 2.0 direct-drive extruder[2] |
| Filament diameter | 2.85 mm standard, 1.75 mm optional[1] | Not documented |
| Hotend & Nozzle | ||
| Hotend design (proprietary/standard; quick-swap mechanism?) | Not documented | Phaetus Rapido 2.0 UHF[2] |
| Max nozzle temp claimed AND firmware max temp limit (both values) | 290 °C maximum, firmware-limited[1] | Not documented |
| Stock nozzle size & sizes included in box | 1.2 mm GammaMaster steel[1] | Not documented |
| Stock nozzle material (brass / hardened steel / plated copper / composite tip) | GammaMaster steel[1] | Not documented |
| Heated Bed & Surface | ||
| Max bed temp claimed AND firmware limit | 80 °C maximum bed temperature — notably lower than the base TAZ Pro[1] | Not documented |
| Bed heater type (DC/AC mains) & wattage | 360 W, 24 V silicone bed heater[1] | Not documented |
| Bed surface (material, texture, coating), single/double-sided | Blue spring-steel magnetic flex bed system[1] | Keenovo silicone bed heater[2] |
| Leveling & Z-Offset | ||
| Auto bed leveling: probe technology (inductive / strain gauge / load cell / touch probe) | BLTouch, 32-point automatic mesh calibration[1] | Beacon eddy-current probe[2] |
| Mesh grid size (probe point count — firmware evidence) | 32 points[1] | Not documented |
| Filament Handling & Detection | ||
| Filament runout sensor (type, location) | Filament sensor with runout and stripping detection[1] | Not documented |
| Cooling & Air Handling | ||
| Part-cooling fan(s): count, size, ducting design | Not documented | Nidec 4028 part-cooling fan[2] |
| Electronics & Power | ||
| Mainboard model & MCU (exact chip markings if teardowns exist) | 32-bit Archim 2.2b with Trinamic TMC2130 drivers[1] | BigTreeTech Octopus[2] |
| PSU (brand, wattage, rail voltage) | 500 W 24 V Mean Well, auto-switching, 100-240 VAC input[1] | Not documented |
| Firmware & Openness | ||
| Firmware base & current version (Klipper fork / Marlin fork / proprietary) | Marlin[1] | RatOS, Rat Rig's Klipper distribution[3] |
| Connectivity, UI & Camera | ||
| WiFi (band/standard), Ethernet, USB ports, SD/flash-drive | USB serial; 16 GB flash drive included for standalone printing[1] | Not documented |
| Calibration Routines & QoL | ||
| Assembly level & time from unbox to first print | Not documented | Self-assembly kit; Raspberry Pi and enclosure panels sourced separately[2] |
| Materials Support | ||
| Officially supported filament list | PLA, TPU, ABS, PETG, PVA, PVB, nylon, PC and other materials below 290 °C[1] | Not documented |
| Reliability, Support & Ecosystem | ||
| Warranty length & support reputation (evidence, not vibes) | 1 year standard with extended options. Made in the USA[1] | Not documented |
| Independently Measured Performance | ||
| Dimensional accuracy measurements (third-party, with numbers) | Positional resolution 0.01 mm in X/Y and 0.002 mm in Z (manufacturer specification)[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
- LulzBot TAZ Pro Long Bed 3D Printer listing matterhackers.com · 2026-08 · vendor
- RatRig V-Core 4 kit (US distributor listing) fabreeko.com · 2026-08 · vendor
- Rat Rig V-Core 4.1 product page ratrig.com · 2026-08 · vendor
- LulzBot TAZ Pro product page buy.lulzbot.com · 2026-08 · vendor