3D PRINTING

Updated June 2020

Processes

Most of my experience here is with Formlabs’ clear resin.

Dedicate a wash bucket to each resin. Fill it with Isopropyl alcohol (IPA), which dissolves liquid resin.
Rinse parts in multiple stages
- First stage of washing can result in some resin, diluted in IPA, coating the surfaces of the parts. Once the IPA evaporates all thats left is the resin and so the parts feel tacky
- Best to immediately wash again so that the resin doesn’t cure at all under ambient light
Let parts dry for about 30 minutes

Flexible Resin 1L has been good enough to hold liquid during some deflction testing

Optical barriers

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I’ve had really good success with an Ultimaker S5 printing and using Cura as a slicer

Quality
- Layer height = 0.1 mm
Shell
- Wall Thickness = 1 mm
  - Wall Line Count = 3
- Top/Bottom Thickness = 1mm
  - Top Thickness = 1mm
    - Top Layers = 10
  - Bottom Thickness = 1 mm
    - Bottom Layers = 10
- Horizontal Expansion = 0 mm
Infill
- Infill Density = 20%
- Infill Pattern = Triangles
Material
- Printing Temperature = 200C
- Build Plate Temperature = 60C
Speed
- Print Speed = 70 mm/s
Travel
- Enable Retraction = True
- Z Hop When Retracted = True
Cooling
- Enable Print Cooling = True
- Fan Speed = 100%
Support
- Generate Support = True
- Support Extruder = Extruder 1
- Support Placement = Everywhere
- Support Overhang Angle = 60
Build Plate Adhesion
- Enable Prime Blob = False
- Build Plate Adhesion Type = Brim
- Build Plate Adhesion Extruder = Extruder 1
Dual Extrusion
- Enable Prime Tower = True
- Prime Tower X Position = 294.76 mm
- Prime Tower Y Position = 206.76 mm