3D Printing InfoPrinter comparison
Positron V3.2 vs QIDI X-Max 3
Compare hardware, build volume, printing specifications, dated prices and sources.
2 selected · all documented properties
Open these two in the interactive comparisonMore Positron V3.2 comparisonsMore QIDI X-Max 3 comparisons
| Property | Positron V3.2COREXY | QIDI X-Max 3COREXY |
|---|---|---|
| Identity | ||
| Brand | Positron3D | QIDI |
| Class | COREXY | COREXY |
| Identity & Market | ||
| Manufacturer & exact marketed model name (verify the exact product identity first) | LDO Positron v3.2 3D Printer Kit, revision v3.2 Rev A[1] | QIDI X-Max 3, listed by QIDI as "Qidi Tech X-Max 3 3D Printer" and in navigation as X-Max3[2][3] |
| Release date (announcement and actual shipping) | Not documented | Not published by QIDI; the product page carries a discontinuation notice rather than a launch date (checked Aug 2026)[2] |
| Street price (USD; dated snapshot per entry) | Not documented | $899.00 (from a $999.00 sale reference) on us.qidi3d.com but marked Sold Out and discontinued, checked Aug 2026. 3D Printers Online Store lists $1,099 USD, also out of stock[2][4] |
| Variants & sibling models — and how to tell them apart (spec-contamination risk) | The defining trait is the inverted geometry: the print head is below the bed and the machine prints upside down. Sold as a self-assembly kit; the complete printed-parts set is a separate purchase. A hard storage case is included[1] | Same-generation siblings X-Plus 3 (280x280x270, 500 mm/s, 800 W) and X-Smart 3 (175x180x170, no chamber heating, 300 °C, 350 W). All three share the Cortex-A53 1.5 GHz / 1 GB DDR3 / 8 GB eMMC control board, so shared-board specs are not evidence of shared print specs. Replaced by the Max4[3][5][6][7] |
| Market position: superseded? successor announced? | Not documented | Discontinued and out of production; QIDI directs buyers to the Max4[2] |
| Physical & Frame | ||
| Build volume X×Y×Z (mm) — advertised vs actually usable | 180 x 180 x 165 mm[1] | 325 x 325 x 315 mm advertised[2][3][4] |
| Machine footprint (mm) & clearance needed (cable/spool overhang) | 200 x 200 x 70 mm folded, 200 x 200 x 270 mm unfolded[1] | 553 x 553 x 601 mm[3][4] |
| Net weight (kg) | 3 kg net; 5.5 kg with the hard case[1] | 30.2 kg net[3][4] |
| Frame construction & material | Folding frame designed to fit in a filament box; supplied with a black hard case[1] | Enclosed CoreXY chassis, fully assembled from the factory. QIDI does not publish a frame-material breakdown[3] |
| Enclosure: open / enclosed; panel material; door/lid | Open frame[1] | Fully enclosed, with a chamber circulation blower and activated-carbon air filter[3] |
| Passive chamber temperature reached (if enclosed; measured values preferred) | Not documented | 65 °C maximum, independent chamber heating (manufacturer claim)[2][3] |
| Kinematics & Motion Hardware | ||
| Kinematics (bedslinger i3 / CoreXY / other) | CoreXY, inverted — the machine prints upside down[1] | CoreXY[3] |
| X-axis guide type (rods / linear rails / V-wheels; size) | Not documented | Linear optical axis (polished steel rod) of high-strength steel[3] |
| Z-axis: leadscrew count & type, sync mechanism, anti-backlash | Not documented | Double Z axis[3] |
| Speed & Acceleration | ||
| Max print speed (claimed, mm/s) | 250 mm/s maximum print speed (manufacturer claim)[1] | <=600 mm/s (manufacturer claim)[2][3][4] |
| Max acceleration (claimed, mm/s²) | 8,000 mm/s2 (manufacturer claim)[1] | 20,000 mm/s2 (manufacturer claim)[2] |
| Max volumetric flow claimed (mm³/s) | Not documented | 35 mm3/s extruder flow (manufacturer claim)[3] |
| Extruder | ||
| Type (direct drive / bowden) & design name | Bowden-style, single extrusion[1] | High-flow direct-drive extruder; QIDI states a 9.5:1 gear ratio for this model[2][3] |
| Gear ratio & drive gear material | Not documented | 9.5:1[2] |
| Hotend & Nozzle | ||
| Hotend design (proprietary/standard; quick-swap mechanism?) | PS plated-copper nozzle, 0.4 mm[1] | Ceramic heating core. Two interchangeable nozzle-head sets shipped: copper alloy for standard materials, hardened steel for abrasives. 0.4 mm stock, 0.2/0.6/0.8 mm optional[2][3] |
| Max nozzle temp claimed AND firmware max temp limit (both values) | 260 °C maximum (manufacturer claim)[1] | <=350 °C claimed[2][3][4] |
| Stock nozzle material (brass / hardened steel / plated copper / composite tip) | Plated copper[1] | Not documented |
| Heated Bed & Surface | ||
| Max bed temp claimed AND firmware limit | 85 °C maximum bed temperature — the lowest in this group, and the reason the material list stops at PETG[1] | <=120 °C claimed[3][4] |
| Bed surface (material, texture, coating), single/double-sided | Heated removable ITO glass bed[1] | Double-sided flexible magnetic plate (QIDI's "HF" plate)[2][3] |
| Leveling & Z-Offset | ||
| Auto bed leveling: probe technology (inductive / strain gauge / load cell / touch probe) | Not documented | Automatic levelling via Klipper adaptive meshing; probe technology not named by QIDI[2] |
| Filament Handling & Detection | ||
| Filament runout sensor (type, location) | Not documented | Filament detection fitted; type and location not published[3] |
| Cooling & Air Handling | ||
| Auxiliary part-cooling fan? | Not documented | Additional (auxiliary) cooling fan fitted[3] |
| Chamber/exhaust fan & filtration (activated carbon / HEPA) | Not documented | Chamber circulation blower with activated-carbon air filter[3] |
| Electronics & Power | ||
| Mainboard model & MCU (exact chip markings if teardowns exist) | LDO Positron mainboard[1] | Not documented |
| Host computer (SoC, RAM, storage) if firmware runs on embedded Linux | Not documented | Cortex-A53 64-bit at 1.5 GHz, 1 GB DDR3, 8 GB eMMC[2][3] |
| PSU (brand, wattage, rail voltage) | DC 24 V, 200 W[1] | Not documented |
| Input voltage (110/220 V, switch or auto) | Not documented | 100-240 VAC, 50/60 Hz[3] |
| Total rated power draw | Not documented | 900 W rated[3][4] |
| Firmware & Openness | ||
| Firmware base & current version (Klipper fork / Marlin fork / proprietary) | Klipper[1] | Klipper with the Fluidd web console. Fork and version not published[2] |
| Connectivity, UI & Camera | ||
| Display: size, type, touch? | 3.5-inch LCD touchscreen[1] | 5-inch touchscreen, 800 x 480[3] |
| WiFi (band/standard), Ethernet, USB ports, SD/flash-drive | Wi-Fi, USB, Ethernet[1] | Wi-Fi (QIDI states 150M 2.4G), Ethernet, USB flash drive[3] |
| Calibration Routines & QoL | ||
| Assembly level & time from unbox to first print | Self-assembly kit, manufactured in China[1] | Not documented |
| Materials Support | ||
| Officially supported filament list | PLA and PETG only, per the manufacturer[1] | ABS, PLA, PETG, TPU, nylon, carbon fibre, PC[4] |
| Reliability, Support & Ecosystem | ||
| Warranty length & support reputation (evidence, not vibes) | Not documented | 1-year coverage[2] |
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
- LDO Positron v3.2 3D Printer Kit matterhackers.com · 2026-08 · vendor
- QIDI X-Max 3 product page (US store) us.qidi3d.com · 2026-08 · vendor
- QIDI Tech X-Max 3 technical data table 3djake.com · 2026-08 · vendor
- Qidi Tech X-Max 3 FDM 3D Printer listing 3dprintersonlinestore.com · 2026-08 · vendor
- QIDI Tech X-Plus 3 technical data table 3djake.com · 2026-08 · vendor
- QIDI Tech X-Smart 3 technical data table 3djake.com · 2026-08 · vendor
- QIDI Max4 product page (US store) us.qidi3d.com · 2026-08 · vendor