TinyBoy Dissection
!
!
by: Wan Leung Wong
FOSSASIA 2014
3D Printing
Workshop
Everything is started from
RepRap
From the Beginning
2
RepRap 

short for “Replicating Rapid-prototyper“



http://reprap.org
RepRap was founded in 2005 by





















Dr. Adrian Bowyer

Senior Lecturer in mechanical engineering at the Uni...
▪ 3D printer (Print REAL plastics parts)
▪ Can self-replicate parts (For repairing or build a new
one)
▪ Open source hardw...
▪ Everyone can replicate RepRap their own
▪ Cheaply distribute RepRap units to people and
communities
▪ Everyone can creat...
RepRap
X/Y/Z
moving
platform
Filament
extruder 

+

Hot nozzle
Control
boards
+
Motor
driver
Heat bed
RepRap’s hardware st...
RepRap’s hardware structure
X - axis
Y - axis
Z - axis
Control board

+
Motor Driver
Extruder
+
Hot Nozzle
Heat bed
▪ Use for teaching, on teaching Design and
Creativity
Why Tiny Boy?
9
10
RepRap
2.5 Generation
▪ It’s Too Large!!!
Why TinyBoy?
13
14
▪A class has 35 students
▪Only 2 hours for the design class
▪1 3D model has to use at least 1 hour to print
▪Students will...
▪So, Parker Leung, a high school teacher, started
this project in 2012.
Why TinyBoy?
16
TINYBOY



TINYBOY SPEC
• Size: 15 cm x 15cm x 22cm
!
• printing size: 8.5cm x 8.5cm x 8.5cm
!
• 1.75mm filament / 0.4mm hotend
!
• s...
▪Quality of the product is not important on
learning
▪The most Important is everyone could have one
▪Then people can learn...
▪ Smaller
23
FIT INTO THE GAP
Cheaper and Faster
in Production
25
STUDENTS COULD BUILD IT BY THEMSELVES
STUDENTS’ WORKS
Design your
own 3D
model
Use toolchain
convert 3D
model into G
code
Send G
code to
control
board
Control X/
Y/Z
Platform
a...
▪ Design your 3D model in any commercial CAD
software (Inventor, Solidworks…) or any free
3D modeling software (Blender, O...
Create with David 3D scanner

配合3D立體素描來創作
David 3D Scanner

is a software can

be download freely.
!
Hardware BOM:
■ Ardui...
“Put creams on cake” by Layers
FDM (Fused Deposition Modeling) / FFF (Fused Filament
Fabrication)
1. Thermoplastics filame...
Plastic Filament Extruding
From 3D model to G code
1 Reading in 3D objects
2 Slicing the objects to make each build layer
3 Evaluating 2D geometry ou...
Toolchains to generate G code
RepRap Host Skeinforge RepSnapper
“RepRap Host” VS “Skeinforge”

G code generation print test result
RepRap Host Skeinforge
▪“Support” printing are required if
printing parts with hollow or
invert slopes > 45°
▪Need to remove “Support”
manually a...
▪Use heat bed to keep warm
during printing to prevent
object warp by cool down
Something more about 3D Printing
Thanks
43
3D Printing Workshop
3D Printing Workshop
3D Printing Workshop
3D Printing Workshop
3D Printing Workshop
3D Printing Workshop
3D Printing Workshop
3D Printing Workshop
3D Printing Workshop
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3D Printing Workshop

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Hong Kong Open Source Conference 2014
3D Printing Workshop

A brief talk about TinyBoy, a 3D printing used in High School Education

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Transcript of "3D Printing Workshop"

  1. 1. TinyBoy Dissection ! ! by: Wan Leung Wong FOSSASIA 2014 3D Printing Workshop
  2. 2. Everything is started from RepRap From the Beginning 2
  3. 3. RepRap 
 short for “Replicating Rapid-prototyper“
 
 http://reprap.org
  4. 4. RepRap was founded in 2005 by
 
 
 
 
 
 
 
 
 
 
 Dr. Adrian Bowyer
 Senior Lecturer in mechanical engineering at the University of Bath (UK)
 

  5. 5. ▪ 3D printer (Print REAL plastics parts) ▪ Can self-replicate parts (For repairing or build a new one) ▪ Open source hardware (GNU general public license) ! What is RepRap? 
 
 
 

  6. 6. ▪ Everyone can replicate RepRap their own ▪ Cheaply distribute RepRap units to people and communities ▪ Everyone can create complex products without industrial support RepRap’s Goal
  7. 7. RepRap X/Y/Z moving platform Filament extruder 
 +
 Hot nozzle Control boards + Motor driver Heat bed RepRap’s hardware structure
  8. 8. RepRap’s hardware structure X - axis Y - axis Z - axis Control board
 + Motor Driver Extruder + Hot Nozzle Heat bed
  9. 9. ▪ Use for teaching, on teaching Design and Creativity Why Tiny Boy? 9
  10. 10. 10
  11. 11. RepRap 2.5 Generation
  12. 12. ▪ It’s Too Large!!! Why TinyBoy? 13
  13. 13. 14
  14. 14. ▪A class has 35 students ▪Only 2 hours for the design class ▪1 3D model has to use at least 1 hour to print ▪Students will be easy to lost interest on modelling design if they can’t get their product in a reasonable time. Why TinyBoy? 15
  15. 15. ▪So, Parker Leung, a high school teacher, started this project in 2012. Why TinyBoy? 16
  16. 16. TINYBOY
 

  17. 17. TINYBOY SPEC • Size: 15 cm x 15cm x 22cm ! • printing size: 8.5cm x 8.5cm x 8.5cm ! • 1.75mm filament / 0.4mm hotend ! • same as RepRap ! • will be Open Source after fine tuning.
  18. 18. ▪Quality of the product is not important on learning ▪The most Important is everyone could have one ▪Then people can learn by themselves. Why TinyBoy? 21
  19. 19. ▪ Smaller 23
  20. 20. FIT INTO THE GAP
  21. 21. Cheaper and Faster in Production 25
  22. 22. STUDENTS COULD BUILD IT BY THEMSELVES
  23. 23. STUDENTS’ WORKS
  24. 24. Design your own 3D model Use toolchain convert 3D model into G code Send G code to control board Control X/ Y/Z Platform and Extrude Extrude plastics by layers until print done How 3D printing works?
  25. 25. ▪ Design your 3D model in any commercial CAD software (Inventor, Solidworks…) or any free 3D modeling software (Blender, OpenSCAD…) ▪ Save the 3D model as STL file format. Design your own 3D model Blender OpenSCAD
  26. 26. Create with David 3D scanner
 配合3D立體素描來創作 David 3D Scanner
 is a software can
 be download freely. ! Hardware BOM: ■ Arduino ■ Motor Drive ■ Stepper Motor ■ Web Cam ■ Line Laser We can scan any objects and replicate by RepRap
  27. 27. “Put creams on cake” by Layers FDM (Fused Deposition Modeling) / FFF (Fused Filament Fabrication) 1. Thermoplastics filament are liquefied and
 deposited by an extrusion head 2. Follows a tool-path defined by the CAD file
 and materials deposited in layers in 0.3 mm 3. Part is built from the bottom up by layers
  28. 28. Plastic Filament Extruding
  29. 29. From 3D model to G code 1 Reading in 3D objects 2 Slicing the objects to make each build layer 3 Evaluating 2D geometry outlines 4 Generating cross-hatch infill 5 Arc compensation 6 Translate the tool path to G code
  30. 30. Toolchains to generate G code RepRap Host Skeinforge RepSnapper
  31. 31. “RepRap Host” VS “Skeinforge”
 G code generation print test result RepRap Host Skeinforge
  32. 32. ▪“Support” printing are required if printing parts with hollow or invert slopes > 45° ▪Need to remove “Support” manually after the print done Something more about 3D Printing
  33. 33. ▪Use heat bed to keep warm during printing to prevent object warp by cool down Something more about 3D Printing
  34. 34. Thanks 43
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