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Original Prusa MINI+

By Original Prusa · Budget 3D Printers · 3D Printing · More from Original Prusa

  • 180 x 180 x 180 mm build volume
  • 280°C max nozzle temperature
  • 100°C max heatbed temperature
  • 0.05-0.25 mm layer height
  • 4.5 kg weight, semi-assembled kit

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Summary

A semi-assembled FDM printer with an 180 × 180 × 180 mm build volume, aimed at owners who want a quiet, well-supported machine they can repair themselves. Check the bundle before you pay: the filament sensor, Wi-Fi and enclosure are optional extras, not part of the base printer.

Strengths

  • Independent tests put its print quality at or above machines costing more.
  • Quiet motors and a removable magnetic PEI sheet owners reuse for years.
  • Open-source design, with spare parts sold directly by Prusa.
  • Firmware 5.1.0 later added Input Shaper and Pressure Advance to existing units.
  • Ethernet as standard, plus Prusa Connect remote management over the optional module.
  • The semi-assembled kit goes together in about an hour for most builders.

Weaknesses

  • The PTFE-lined hotend is a documented clog failure mode; owners treat the tube as a consumable.
  • No power-loss recovery, unlike the MK4S and MK3S+.
  • The Bowden extruder makes flexible filaments awkward, and there is no enclosure in the base SKU.
  • First-layer Z is a manual dial adjustment and the hardest setup step.
  • Filament sensor and Wi-Fi are optional, not bundled with the plain printer.
  • It costs more than faster CoreXY rivals, the so-called “Prusa tax”.

Verified specifications

Build volume180 × 180 × 180 mm (7 × 7 × 7 in).
Layer height0.05–0.25 mm, the current manufacturer figure.
Nozzle0.4 mm default, replaceable.
Filament1.75 mm.
Max nozzle temperature280 °C (536 °F); max heatbed 100 °C (212 °F).
Boardcustom 32-bit Buddy (STM32) with Trinamic 2209 stepper drivers.
ExtruderBowden, 3:1 gearing.
Bed levelingautomatic mesh via SuperPINDA probe; first-layer Z set by hand.
Display2.8-inch colour LCD.
ConnectivityUSB and RJ-45 Ethernet standard; Wi-Fi needs the optional ESP module.
Power160 W external adapter.
Max travel speed200+ mm/s.
Power-loss recoverynot present on the MINI+.
Dimensions380 × 330 × 380 mm (15 × 13 × 15 in); 4.5 kg without spool holder or PSU.
Full research notes and sources

Setup and first-layer calibration

The kit arrives semi-assembled, and Raspberry Pi’s magazine built two units in about an hour the first time and 35 minutes the second. Mesh bed leveling runs automatically through the SuperPINDA probe, but the first-layer Z offset is a manual dial adjustment on the LCD. Reviewers and forum owners both call this the fiddliest step. PCMag ran the calibration repeatedly and had prints pull off the bed before getting settings right. Tom’s Guide praised the on-LCD guided setup and the printed screw-and-bolt cheatsheet.

Speed and firmware

On launch firmware it was a modest-speed machine.

Hotend, PTFE tube and running costs

The PTFE-lined heatbreak is the ownership fact that matters. Owners on the Prusa forum and Reddit report partial and full clogs from degraded or mis-seated PTFE tubes, fixed by tube replacement or re-applying thermal paste, and treat the tube as a consumable with a 6–12 month service interval. All3DP hit the same problem in testing, and Prusa’s warranty article lists PTFE tubes among limited-warranty consumables. Budget for the tube, a replacement nozzle and fresh print sheets. Filament is the other recurring cost: the sample in the box is only about 50 g across two small spools, so a full spool is a near-mandatory add-on. PCMag’s 2020 review noted that US shipping from the Czech Republic added roughly $50.

Repairability, warranty and support

The design is open-source, Prusa runs a spare-parts shop, owner-replaceable parts are documented in its knowledge base, and Printed Solid operates a US service centre. iFixit keeps a MINI+ device page with parts and guides. Warranty for a US buyer is one year on both the kit and the assembled version, while EU consumers get two; on a kit, factory repair excludes labour and inbound shipping. A one-year extension can only be bought at the same time as the printer, not later.

Is it worth it?

Prusa’s own comparison table lists the kit at $429 and the assembled version at $459, and its store lists the semi-assembled Enclosure Bundle at $508.33. A 2026 specialist review puts the machine at roughly $400–450 depending on version. Against $200–300 CoreXY rivals that print a Benchy three times faster, that is a real premium, and you are paying for documentation, parts access, PrusaSlicer, Prusa Connect and years of firmware updates. A lightly used Mini+ at $220 was called a great deal by owners in 2024. Buy it if you want a quiet, consistent printer you can maintain and keep for years, or a reliable second machine next to a faster main one. Skip it if raw speed or high-temperature materials are the priority.

Which model this is

This page covers the Original Prusa MINI+, the November 2020 successor to the original MINI, sold as a semi-assembled kit or a full kit with no factory-assembled option. Its Amazon listing is ASIN B0933LV2JW. Don’t confuse it with the Original Prusa MK4, MK4S, i3 MK3S+, CORE One+ or XL, which have different build volumes, boards and extruder systems.

Sources

Manufacturer:

Independent reviews:

Owner reports:

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