I performed a polycarbonate modification on my Ender 3 Pro (heated chamber, external electronics, all-metal hotend, new thermistor, PID-tuning, dry-box, actively cooled motors through Peltier cooling, ABL leveling, polycarbonate printing surface, etc...). Basically, I did everything based on this:
Currently, the maximum possible temperature I can reach in the chamber according to my additionally added temp-sensor is about 65 °C. Near the printing bed, it could be a little bit warmer.
Please take a look at the following image of my current polycarbonate print. As you can see there is something wrong going on there, especially at the corners. I really don't have a clue what is causing these problems. Maybe you have more experience and some advice for me? (Please ignore the horizontal "Raft Air Gap" it is not a printing issue)
For detailed information regarding the pc-material take a look at the technical datasheet of the polycarbonate material:
- Nozzle: 250-270 °C
- Chamber: 70-80 °C recommended
- Build plate: 80-110 °C
PC from Raise3D Technical Datasheet
And these are my Cura settings:
- OS Windows 10.0.22000
- Cura Version 5.0.0-beta+1
- Material Extruder : 1 PC
Quality
- Layer Height 0.1 mm
Walls
- Wall Thickness 0.8 mm
- Wall Line Count 2
- Horizontal Expansion 0 mm
Top/Bottom
- Top/Bottom Thickness 0.6 mm
- Top Thickness 0.6 mm
- Top Layers 0
- Bottom Thickness 0.6 mm
- Bottom Layers 999999
- Initial Bottom Layers 999999
Infill
- Infill Density 100 %
- Infill Pattern Tri-Hexagon
Material
- Printing Temperature 265 °C
- Build Plate Temperature 100 °C
Speed
- Print Speed 50 mm/s
Travel
- Enable Retraction True
- Retraction Distance 1 mm
- Retraction Speed 20 mm/s
Cooling
- Enable Print Cooling False
Support
- Generate Support True
- Support Placement Everywhere
- Support Overhang Angle 63°
Build Plate Adhesion
- Build Plate Adhesion Type Raft
- Raft Air Gap 0.2 mm
Machine
- Machine Type Creality Ender-3 Pro
- MicroSwiss All-Metal Hotend (0.4 mm nozzle)
