Humanity & Inclusion (HI) invites tenders for the supply of FDM 3D printers for Humanitarian Mine Action projects in Northern Ethiopia.

TECHNICAL SPECIFICATIONS

Procurement of FDM 3D Printers for Humanitarian Mine Action Project

1. Purpose of Procurement

Humanity & Inclusion intends to procure two categories of Fused Deposition Modeling (FDM/FFF) 3D printers to support the implementation of Humanitarian Mine Action activities in Northern Ethiopia. The printers will be used to locally manufacture tools, fixtures, jigs, protective accessories, and functional components required for mine action operations, mechanical support activities, and workshop-based fabrication. The use of additive manufacturing is intended to reduce dependency on external supply chains, minimize operational downtime, and strengthen local technical capacity in challenging and remote operational environments. The equipment must therefore be robust, reliable, suitable for

continuous use, and adaptable to resource-constrained field and workshop conditions.

2. General Requirements

The tender consists of two (2) distinct item categories. Bidders may submit offers for one or both categories.

· Large-Format Professional FDM 3D Printer

· Medium-Format High-Speed FDM 3D Printer

3. General Technical Requirements (Applicable to All Items)

· The printer shall be brand new, unused, and of current production model.

· The printer shall be supplied with all standard accessories, firmware, and safety features required for full operation.

· The offered model shall be equivalent or superior to the minimum technical specifications listed below.

· Deviations must be clearly stated in the Compliance Matrix.

· English documentation is mandatory

4. Technical Specifications

ITEM 1 : LARGE-FORMAT PROFESSIONAL FDM 3D PRINTER

Reference Model

· Creality Ender-5 Max (or equivalent)

Printing Technology

· Printing Technology: Fused Deposition Modeling (FDM / FFF)

· Motion System: CoreXY architecture

Build & Mechanical Characteristics

· Build Volume (XYZ): 400 × 400 × 400 mm (minimum)

· Frame Structure: Rigid all-metal aluminum alloy frame

· Z-Axis System: Dual independent Z-axis with lead screws and linear rods

· Maximum Load Capacity on Z-Axis: Up to 5 kg model weight

Printing Performance

· Maximum Printing Speed: Up to 700 mm/s

· Maximum Acceleration: Up to 20,000 mm/s²

· Printing Accuracy: 100 ± 0.1 mm

· Layer Height Resolution: 0.05 – 0.3 mm

· Input Shaping: Supported

Extrusion System

· Extruder Type: Direct-drive extruder with dual tempered gears,

· Filament Diameter Supported: 1.75 mm

· Standard Nozzle Diameter: 0.4 mm (compatible with 0.6 mm and 0.8 mm)

· Maximum Nozzle Temperature: Up to 300 °C

Build Plate & Bed Leveling

· Build Plate Type: Epoxy flexible build plate

· Bed Leveling System: 64-point fully automatic bed leveling

· Maximum Heated Bed Temperature: Up to 100 °C (80 °C achievable in ~200 seconds)

Supported Materials

· Supported Filaments (minimum):

PLA, Hyper-PLA, PETG, TPU 95A, ABS, ASA, PA (Nylon), PLA-CF, PLA-Silk

Environmental & Operating Conditions

· Operating Ambient Temperature Range: 5 – 40 °C

· Enclosure Support: Yes (recommended for engineering filaments)

Electronics & User Interface

· Display: 4.3-inch full-color touchscreen

· Indicator Light: Tri-color (Red / Green / Yellow)

· Camera: Optional

· Lighting Kit: Included

Connectivity & Data Handling

· File Transfer Options: USB flash drive and Wi-Fi (WLAN)

· Cloud Printing & Remote Control: Supported via Creality Cloud

· Multi-Printer Management: Supported (print farm-ready)

Software Compatibility

· Supported Slicing Software: Creality Print v5.1 or later

· Supported File Formats for Slicing: STL, OBJ, 3MF

· Printable File Format: G-code

· User Interface Languages:

ü English, French, Spanish, German, Italian, Portuguese, Russian, Turkish, Japanese, Korean, Chinese

Safety & Reliability Features

· Filament Run-Out Sensor: Yes

· Power-Loss Recovery: Yes

· Sleep / Power-Saving Mode: Yes

Physical Dimensions & Weight

· Printer Dimensions (L × W × H): 649 × 721 × 850 mm

· Net Weight: ≤ 25.9 kg

· Gross Weight: ≤ 31.9 kg

ITEM 2 : MEDIUM-FORMAT FDM 3D PRINTER

Reference Model

· Creality Ender-3 V3 Plus (or equivalent)

Printing Technology

· Printing technology: Fused Deposition Modeling (FDM / FFF)

· Motion system: CoreXZ or equivalent high-speed precision motion system

Build Volume

· Minimum build volume (X × Y × Z): 300 × 300 × 330 mm

· The printer shall be capable of printing functional parts and medium-size components in single pieces

Mechanical Structure

· Frame construction: All-metal aluminum alloy frame, die-cast or equivalent

· Structural reinforcement: Support rods or equivalent to minimize Z-axis vibration

· Z-axis positioning accuracy: ≤ 15 microns (µm) or equivalent

Printing Performance

· Maximum printing speed: ≥ 600 mm/s

· Maximum acceleration: ≥ 20,000 mm/s²

· Typical recommended printing speed: Approx. 300 mm/s

· Layer height range: 0.05 – 0.30 mm (or equivalent resolution)

· Input shaping / vibration compensation: Required

Extrusion System

· Extruder type: Direct-drive extruder

· Hotend power rating: Approx. 60 W or equivalent

· Nozzle type: Quick-swap tri-metal or all-metal nozzle

· Standard nozzle diameter: 0.4 mm

· Supported filament diameter: 1.75 mm [productchart.com]

· Maximum nozzle temperature: ≥ 300 °C

Build Plate and Bed Leveling

· Build plate: Heated build plate, removable preferred

· Bed leveling: Fully automatic calibration and leveling system

· Manual paper-based leveling shall not be required

Supported Materials

· The printer shall support, at minimum, the following filaments:

ü PLA / Hyper-PLAPETG

ü TPU (≈95A)

ü ABS and ASA (with enclosure or equivalent thermal control)

Environmental Operating Conditions

· Operating temperature range: Suitable for indoor workshop use in hot/dry climates

· Enclosure compatibility: Printer shall support use with an

optional enclosure for high-temperature materials

User Interface and Controls

· Display: Minimum 4.3-inch IPS full-color touchscreen

· Interface usability: Graphical, icon-based, suitable for non-expert operators

· Noise reduction / silent mode: ≤ 55 dB preferred

Connectivity and Data Transfer

· File transfer methods: USB flash drive and Wi-Fi (WLAN)

· Remote monitoring and control: Supported via manufacturer software or cloud platform

Software Compatibility

· Recommended slicer software: Manufacturer-supported slicing software

· Supported input file formats: STL, OBJ, 3MF

· Output file format: G-code

· User interface language: English mandatory

Safety and Reliability Features

· Filament run-out detection: Required

· Automatic calibration routines: Required

· Stable, clog-free extrusion system: Required

Power Requirements

· Input voltage: 100–240 V AC, 50/60 Hz

· Power consumption: Suitable for generator or inverter-supported operation

Dimensions and Footprint

· Printer footprint: Compact enough for standard workshop benches

· Assembly: Highly pre-assembled modules; minimal tools

required

5. Documentation, Warranty, and Support

For both printer types, the supplier shall provide complete user manuals, installation instructions, and maintenance documentation in English. Preventive maintenance guidance and basic troubleshooting information shall be included. The equipment shall be covered by a minimum manufacturer’s warranty of Twenty-four months. The availability of spare parts and consumables shall be confirmed, and basic operator training, whether remote or on-site,

shall be offered as part of or as an option within the supply arrangement.

6. Compliance and Evaluation

Bidders shall submit a completed technical compliance matrix demonstrating full conformity with the requirements for each printer type offered. Compliance shall be assessed on a pass or fail basis against the minimum specifications set out in this document. Deviations must be clearly explained and may be grounds for disqualification if they affect operational suitability for Humanitarian Mine Action activities.