3D Printing
Fablab 3D Printing notes
Manufacturing Processes
Motivations/Advantages
- Design freedom
- Faster production
- Customization
- Less waste
- many others
3D Printing Hall of Fame
Materials
- PLA
- ABS
- PETG
- Nylon
- TPU
- HIPS
- glass
- ceramic
- carbon fiber
- metals: aluminum, steel, titanium, etc
- Food
- concrete
Simplify3D materials guide
Materials comparison chart
Constraints
- failure
- layer height
- time
- cost
- ventilation
- supports
- unsupported
- wall thickness
- dimensions
- anisotropy
- surface finish
- infill
- post-processing
Processes
- stereolithography (SLA)
- digital light processing (DLP)
- fused deposition modelling/fused filament fabrication
- ink-jet binder
- polyjet
- cut sheets
- selective laser sintering (SLS), selective laser melting (SLM)
- electron beam melting (EBM)
Machines
- Ultimaker
- Makerbot
- Prusa, parts
- Sindoh
- Creality Ender3
- Formlabs, parts
- Objet, parts
- 3D Systems
- Markforged
- 3-in-1 3D Printers
Service Bureaus
- Shapeways
- iMaterialise
- Sculpteo
- 3ERP
- Singapore
Materials Suppliers
File Formats
Design Software
- Fusion 360
- SolidWorks
- TinkerCAD
- SketchUp
- OpenSCAD
- Rhino 3D
Slicer Software
Mesh Editing
Downloadable Models
[Workflow]
- 3D Model (design, download, scan)
- Generate STL, OBJ, 3MF
- Slicer
- gcode
[Parts of 3D Printer]
- filament
- extruder
- build plate
- cooling fan
- display panel
- motor drives
Ultimaker 2+ Parts
Guides
Recommended Cura settings
- Printer: Ultimaker 2+
- Material: PLA
- Nozzle: 0.4mm
- Layer height: 0.25mm (quick), 0.2mm (normal)
- Wall thickness: 0.8mm (min)
- Infill: 15 ~ 20% (normal)
- Print speed: 50 ~ 80 mm/s
- Support: none (preferred), touching buildplate (if require), everywhere (last resort)
- Bed Adhesion: none/skirt (preferred), brim (if required), raft (last resort)
Worksheet
Assignment
- Group:
- test the design rules for a 3D printer: bridging, overhang, infill density, clearance, etc
- 4 members to a group, each person to design model to test one feature of the 3D printer
- Document your contribution & link to the pages of your other group members
- Individual: design and 3D print an object (small, few cm3, limited by printer time) that could not be made subtractively
For all assignments, you have to document the process, include your original CAD/design files and include a “hero” shot of your assignment
Example of Individual Assignment
