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Here are some step by step instructions for learning how to use your Hyrel 3D Printer.

Before You Get Started

ALL printer models:

  1. Yt.png Motor Setup

Unboxing and Initial Setup: 30M Models

  1. PDF: Quick Start Instructions
  2. Yt.png System 30M Unboxing
  3. Yt.png System 30M Initial Setup

Unboxing and Initial Setup: ESR Models

  1. PDF: Quick Start Instructions
  2. Yt.png Plugging in Motor Cables
  3. Yt.png ESR Unboxing and Initial Setup

Unboxing and Initial Setup: Hydra Models

  1. Yt.png Plugging in Motor Cables
  2. Yt.png Hydra 21 Model Unboxing
  3. Yt.png Hydra 21 Bed Leveling

Older videos below still generally apply:

  1. Yt.png Hydra Model Startup
  2. Yt.png Hydra Home Calibration Details
  3. Yt.png Hydra Model Controls Overview

Unboxing and Initial Setup: Engine HR (High Resolution)

  1. Yt.png Plugging in Motor Cables
  2. Yt.png Unboxing and Set Up of the EHR
  3. Yt.png How the Engine HR is Set Up, Part 1
  4. Yt.png How the Engine HR is Set Up, Part 2
  5. Yt.png Setting the Z-Zero on the EHR, older
GCODE to establish sensor-based home in Z and in X/Y:
G28 Z0 ; home Z
G28 X0 Y0 ; home X/Y
GCODE to insert BEFORE first move, assuming 28.2 as your calculated Z-Zero above absolute Zero:
M660 H2 Z28.2 ; set tool height for tool two (Z offset)
GCODE to insert ON first move, 
Before: G1 Z0.275 F360 ; move to next layer (0)
After:  G1 Z0.275 F360 H2 ; move to next layer (0) and invoke head Z offset for this tool

Please complete the steps above for your model of printer before printing.

BASIC Printing: One STL, One Head

First Training Session

Overview, Tramming, Printing with Reservoirs

  1. PDF: First Training Session
  2. Yt.png Session 1A: Hardware and Software Overview Video
  3. Yt.png Session 1B: Communications and Tramming Video
  4. Yt.png Session 1C: Setting Z-Zero and Emulsifiable Print Video

Additional Emulsifiable Videos

  1. Yt.png EMO Series Printing Tips
  2. Overview of Reservoir-based Print Heads:
    1. Yt.png Overview of the EMO Heads
    2. Yt.png Overview of the SDSHeads
    3. Yt.png Overview of the VOL Heads
    4. Yt.png Overview of the KR2 Heads
    5. Yt.png Overview of the SMH-2 Head
  3. Loading Reservoir-based Print Heads:
    1. Yt.png Loading the EMO-25
    2. Yt.png More Loading the EMO-25
    3. Yt.png Loading the VCD Head
    4. Yt.png Loading the SDS Head
    5. Yt.png Loading the SDS Head with RTV
    6. Yt.png Loading and Printing with the EMO-25

Second Training Session

CAD Modeling, Positioning, and Printing with Filaments

  1. PDF: Second Training Session
  2. Yt.png Session 2A: Simple CAD Modeling in FreeCAD Video
  3. Yt.png Session 2B: Healing an STL in MeshLab Video
  4. Yt.png Session 2C: Positioning, Scaling, and Rotating your STL Video
  5. Yt.png Session 2D: Editing Slic3r Recipes Video
  6. Yt.png Session 2E: Slicing your STL and Viewing your GCODE Video
  7. Yt.png Session 2F: Loading and Printing with Filaments Video

Additional Filament Videos

  1. General MK Series:
    1. Yt.png MK Series Printing Tips
    2. Yt.png Post Processing with a Heat Gun
    3. Yt.png Loading and Unloading Filament in the MK Series head
  2. MK1-250 Extruder for Standard Filaments:
    1. Yt.png Overview
    2. Yt.png Loading and Printing
  3. MK2-250 Extruder for Flexible Filaments:
    1. Yt.png Overview
    2. Yt.png Loading and Printing
  4. MK1-450 Extruder for High-Temperature Filaments:
    1. Yt.png Overview
    2. Yt.png Loading and Printing

Additional Basic Printing Instructions

  1. PDF: BASIC Printing Instructions
  2. Yt.png HotHead/HotBed 103 Controller Board LEDs Explained
  3. Yt.png Tramming your Bed: Systems and Engines, 2015 and later
  4. Yt.png Tramming your Bed: Earlier Systems and Engines

Please become skilled at BASIC Printing before moving to INTERMEDIATE Printing.

INTERMEDIATE Printing: One STL, Multiple Heads

  1. PDF: Intermediate Printing Instructions
  2. Yt.png Session 3A - Setting Two Heads to Z-Zero
    1. Yt.png Session 3A - Alternate Version
  3. Yt.png Session 3B - Calibrating the Offset Between Two Heads
    1. PhoneBuddy App for using your smartphone to calibrate offests
    2. GCODE: Calibration Target
  4. Yt.png Session 3C - Slicing and Printing with Second Head Support
  5. Yt.png Session 3D - Clone or Parallel Printing

Please become skilled at INTERMEDIATE Printing before moving to ADVANCED Printing.

ADVANCED Printing: Multiple STLs, Multiple Heads

  1. Yt.png Session 4 - Advanced Slicing and Printing: Multiple STLs with Multiple Heads

Please refer to the videos below for instructions on Troubleshooting, Maintaining, and Tuning your Printer.

Other Accessory Overviews

Troubleshooting, Maintaining, and Tuning

List of ALL Videos


  1. Yt.png Establishing Connectivity between PC and Printer
  2. Yt.png Updating Slic3r Settings
  3. Yt.png Replacing the 103 HotHead Controller
  4. Yt.png Updating the 103 HotHead / HotBed Controllers
  5. Yt.png Updating the 407 Motion Controller
  6. Yt.png Assembling the new PEEK Fan Nozzle on the MK1-250 and MK2-250

Hydra Models


  1. Yt.png Converting from Printer to CO2 Laser


  1. Yt.png Hydra Home Calibration Details
  2. Yt.png Adjusting X and Y Belt Tension
  3. Yt.png Adjusting Z Belt Tension
  4. Yt.png Adjusting Linear Bearings
  5. Yt.png Draining Laser Coolant

System 30M and Engine (SR) Models


  1. Yt.png Adjusting the X-Arm
  2. Yt.png Tightening the X Belt
  3. Yt.png Adjusting the Y-Arm
  4. Yt.png Tightening the Y Belt
  5. Yt.png Adjusting the Table Arm Block
  6. Yt.png Tramming the heated build platform and setting Z-Zero


  1. Yt.png Replacing the Power Supply
  2. Yt.png Replacing the Heated Build Platform
  3. Yt.png Replacing the (old) 4A fuses (1206 package) on the Yoke
  4. Yt.png Replacing the Print Head PCB
  5. Yt.png Replacing the Main I/O (Spine) Board
  6. Yt.png Replacing the Tablet Interface Board
  7. Yt.png Running from an External PC (start at 6:24)
  8. Yt.png Replacing the LED Strips
  9. Yt.png Replacing the Front Switch Panel

YouTube Directories

  1. Yt.png The Hyrel YouTube Channel:
  2. Yt.png Karl Gifford's YouTube Channel: