Gel Printing Setup with PrusaSlicer

Overview

This procedure describes how to set up and configure PrusaSlicer for gel printing with the syringe tool on the Jubilee machine.

Prerequisites

• PrusaSlicer installed
• Jubilee_Prusa_config.ini configuration bundle
• 3D model in .stl format
• Pluronic F127 hydrogel (25 wt%)
• Appropriate syringe tip (18 gauge recommended)

Configuration Steps

1. Import Jubilee Configuration:

   • Open PrusaSlicer
   • Go to File > Import > Import Config ...
   • Select Jubilee_Prusa_config.ini

2. Load Your Model:

   • Click 'Add' button
   • Select your .stl file
   • Adjust orientation and scale as needed

Printing Parameters

Nozzle Settings

• Default: 18 gauge nozzle (green)
• Can be changed under Printer Settings
• Reference needle sizes from Hamilton Needle Gauge Chart

Speed Settings

• Default: 10 mm/s for F127
• Adjust based on nozzle size and material viscosity
• Located under Print Settings

Layer Settings

• Layer height and first layer height should scale with nozzle size
• Located under Print Settings

Extruder Assignment

• The config includes four syringe extruders
• Tool numbers in PrusaSlicer start at 1, while Jubilee starts at 0
• Example: Extruder 3 in PrusaSlicer = Tool 2 on Jubilee
• Configure under Print Settings > Multiple Extruders

Slicing and Export

1. Click Slice now to generate preview
2. Review tool paths and infill patterns
3. Click Export G-code to generate GCode file

Printing

1. Upload GCode to Duet Web Control (DWC):
   • Click UPLOAD & START in DWC interface
   • Monitor print progress
   • Use DWC controls to pause/stop if needed

Important Notes

• Always calibrate Z-offset before printing
• Use glass plate for gel printing
• Monitor print quality and adjust parameters as needed
• Keep F127 at appropriate temperature for printing
• Clean syringe and nozzle after use