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Product label:
Original Prusa MK4S - Fully Assembled
Prusa Research
SKU: PRU-MK4-3D-PRN
Lead Times: 1 week depending on availability.
Increments of 1
Minimum of 1
Maximum of
Sale price
£822.00 GBP
-100%
Regular price
Regular price
£822.00 GBP
Unit price
per
Tax included.
Shipping calculated at checkout.
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Worldwide shipping via UPS
Shipping is calculated automatically at checkout from your delivery address and live UPS rates — you'll see the exact cost before you pay.
Customs & Duties: Not included. Our partner UPS contacts you directly to handle clearance and collect any local taxes or duties on delivery ouside the European Union.
Original Prusa MK4S - Fully Assembled
Sale price
£822.00 GBP
Regular price
Regular price
£822.00 GBP
Unit price
per
Couldn't load pickup availability
Spain: Electronic invoicing options available via FACe. Please contact us.
EU VAT Exempt: No VAT on all EU B2B orders. Please contact us.
Training: We offer both online and in-person training options. Please contact us for details
Have a question?
Description
The Original Prusa MK4S is Prusa Research's flagship open-source FDM 3D printer, fully assembled and ready to print out of the box. The MK4S builds on the proven MK4 platform with an upgraded 360° cooling system that significantly improves overhang performance and surface quality on complex geometry. With a 250×210×220 mm build volume, the Nextruder direct drive extruder, and Input Shaper technology enabled from the factory, the MK4S delivers consistent high-quality prints across a wide range of materials without manual calibration.
Key Specifications
| Print technology | FDM / FFF — Cartesian (bed-slinger) |
| Build volume | 250 × 210 × 220 mm |
| Max nozzle temperature | 290°C |
| Max bed temperature | 120°C |
| Layer resolution | 0.05–0.30 mm |
| Extruder | Nextruder — direct drive, load cell-based auto-levelling |
| Cooling | 360° part cooling (MK4S upgrade) |
| Bed surface | Removable spring steel sheet (magnetic PEI) |
| Input Shaper | Yes — enabled from factory |
| Connectivity | Ethernet, Wi-Fi, USB |
| Remote monitoring | Prusa Connect |
| Firmware | Open-source (Prusa Buddy) |
| Assembly | Fully assembled |
MK4S vs MK4 — What Changed
The key difference between the MK4S and its predecessor is the 360° cooling system. The original MK4 used single-direction part cooling, which limited overhang angles and required careful orientation of complex parts. The MK4S's 360° airflow wraps cooling air around the print from all directions simultaneously — improving overhangs, reducing stringing, and allowing more aggressive print speeds on detailed geometry without support degradation. Existing MK4 owners can upgrade to MK4S specification with the cooling upgrade kit.
Nextruder — Auto-Levelling Without Manual Z Offset
The Nextruder uses a load cell sensor to detect bed contact during first-layer calibration. Rather than relying on a probe offset (which needs manual tuning), the extruder itself detects the nozzle touching the bed and calibrates from that direct measurement. This means first layers are consistently correct from the first print on a new surface — no Live Adjust Z hunting required. The system compensates automatically when switching between textured and smooth spring steel sheets.
Material Compatibility
- Standard: PLA, PETG, ASA, ABS, HIPS
- Flexible: TPU, TPE (direct drive handles flexible filaments well)
- Engineering: PC Blend, PA-11 Nylon, PA-12 Nylon, PA-CF
- Composite: Carbon-fibre-filled, glass-fibre-filled, metal-filled (hardened nozzle required)
- High-temp: PC, CPE — up to 290°C nozzle and 120°C bed
Open Source and Ecosystem
All Prusa hardware design files and firmware are open source. The MK4S is compatible with PrusaSlicer (free, actively developed by Prusa Research) as well as OrcaSlicer and other community slicers. Prusa Connect enables remote print monitoring, camera integration, and print farm management from a browser or mobile device.
Who It's For
- Makers and hobbyists who want a reliable workhorse printer with no-fuss operation and excellent community support
- Designers and engineers using PLA/PETG for prototyping and functional parts
- Schools and educational labs needing a safe, well-documented, fully supported machine
- Print farm operators — the MK4S's reliability, remote management, and fast print speeds make it a proven farm platform
Available from Eolas Prints
Eolas Prints is an official Prusa Research reseller based in Cantabria, Spain. EU warranty, Spanish-language support, and fast shipping across Europe included.
Shipping
When do you ship?
We ship Monday to Friday from our warehouse in Cantabria, Spain. In-stock orders placed before the cut-off time ship the same business day. Orders placed after the cut-off, or at the weekend, ship on the next business day.
| Spain & Portugal | Orders placed before 4PM CET ship the same day. |
| Rest of the world | Orders placed before 1PM CET ship the same day. |
Products with a lead time shown on their product page ship as soon as they are available, within the lead time shown.
How do you ship?
Parcels — we ship with GLS within mainland Spain & Portugal and with UPS to the rest of the world. Shipping is calculated at checkout from your delivery address, the weight of your order and live carrier rates, so you see the exact price and delivery options before you pay.
Pallet freight — large and heavy machines, such as CO₂ laser cutters and industrial or large-format printers, ship on a pallet by road or, to islands and overseas destinations, by sea. Orders over 40 kg to mainland Spain & Portugal also ship by pallet. The pallet rate for your destination is shown at checkout, and orders over 150 kg ship on two pallets.
Free shipping
Free standard shipping on filament, pellets and accessories:
- Mainland Spain & Portugal: orders over €100 (GLS)
- Other EU countries: orders over €150 (UPS Standard), excluding Malta and Cyprus
Free shipping does not apply to 3D printers, 3D scanners, laser machines or other equipment, or to the Balearic and Canary Islands, Ceuta, Melilla, the Azores and Madeira.
Parcel delivery times
Business days after dispatch.
| Spain & Portugal |
GLS: Next business day UPS: 1 - 2 business days |
| Rest of Europe |
UPS Standard: 2 - 5 business days UPS Worldwide Saver: 1 - 2 business days UPS Express: 1 - 2 business days (before 2PM) |
| North America |
UPS Worldwide Saver: 1 - 2 business days UPS Express: 1 - 2 business days (before 2PM) |
| South America | UPS Worldwide Saver: 2 - 5 business days |
| Middle East |
UPS Worldwide Saver: 1 - 2 business days UPS Express: 1 - 2 business days (before 2PM) |
| Asia | UPS Worldwide Saver: 5 - 7 business days |
| Australia & New Zealand |
UPS Worldwide Saver: 5 - 7 business days UPS Express: 3 - 5 business days (before 2PM) |
Pallet delivery times
Estimated, after dispatch.
| Mainland Spain & Portugal | 2 - 4 business days |
| Balearic Islands | 4 - 7 business days |
| EU mainland | 3 - 7 business days |
| UK, Switzerland & Norway | 5 - 10 business days |
| Islands by sea | 1 - 3 weeks Canary Islands, Ceuta, Melilla, Malta, Cyprus, Iceland, Azores, Madeira, Sardinia, Sicily |
| Rest of the world by sea | 4 - 8 weeks |
Pallet deliveries
- The carrier will contact you to arrange a delivery day, so please give a phone number that will be answered.
- Delivery is to your address at ground level. The pallet is not carried inside or unpacked, so please make sure you can unload it — with a forklift, a pallet truck or enough people. Machines can weigh 70 - 250 kg.
- If your address has restricted access (no truck access, a narrow street, no loading area) or you need a tail-lift, please contact us before ordering.
- Check the pallet before signing. Note any visible damage on the delivery note and send us photos within 24 hours.
- If a delivery fails because no one is available or the address cannot be accessed, redelivery and storage may be charged.
How about taxes & duties?
EU, including mainland Spain and the Balearic Islands: VAT is included in the price you pay at checkout. Nothing further is due on delivery.
Outside the EU VAT area, including the Canary Islands, Ceuta and Melilla: all orders ship on DAP (Delivered at Place) terms. We pay for export clearance and transport to your address. Import duties, import taxes (such as VAT, IGIC or IPSI) and customs clearance fees are not included and are paid by the recipient.
- Parcels: UPS will contact you to arrange payment of any duties and taxes before delivery.
- Pallets: the carrier's agent or a customs broker at destination will contact you. You are responsible for import clearance.
If a shipment is refused or not cleared through customs, the return freight and any costs incurred will be deducted from any refund.
Countries we do not ship to
Due to EU sanctions, we do not ship to Russia or Belarus.
Questions?
Contact us at support@eolasprints.com or +34 942 73 59 55 before ordering if you have any questions about delivery to your address.
Characteristics
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Add ons
MMU3, Enclosure, & GPIO Hacker-board
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360° Cooling
Print Without Supports
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Extruder
Nextruder
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Community Friendly
Open Source
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Network Printing
Wi-FI & Prusa Connect
Specifications
Build volume
250 x 210 x 220 mm
Filament diameter
1.75mm
Layer Height
0.05-0.30 mm
Printer dimensions
7 kg, 500×550×400 mm
Extruder
Nextruder, E3D V6 compatible (with adapter)
Drive system
Direct extruder
Max nozzle temperature
290 °C
Max heatbed temperature
120 °C
Screen
3.5″ graphic 65k color screen
Connectivity
LAN, NFC receiver and ESP Wi-Fi module (delivered with the printer)
Advances sendors
Filament sensor, Loadcell sensor, Power panic, 4 high-precision thermistors (genuine Semitec) + fan motors RPM monitoring
Print surface
Magnetic heatbed with removable PEI spring steel sheets
Bed calibration
Automatic, Mesh Bed Leveling (only on print area)
Supported materials
PLA, PETG, ABS, ASA, Flex, HIPS, PA, PVA, PC, PP, CPE, PVB, NGEN, composites and more
PSU
AC100~120/200~240V, 50/60Hz, 240W, with Power Panic HW
Features
360° cooling system
Original Prusa MK4S - Fully Assembled
1 week depending on availability.
Sale price
£822.00
-100%
Regular price
Regular price
£822.00
Unit price
per
Why choose us?
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Worldwide Shipping
-
Authorised Resellers
-
30 Days Returns Policy
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Technical Support
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100% Secure Payments