3d printing action heroes
TRANSCRIPT
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3D Printing Action Heroes
Anna Gerber
Anna Gerber
3D Printing Action Heroes
![Page 2: 3D Printing Action Heroes](https://reader034.vdocument.in/reader034/viewer/2022051521/5a6e5ddd7f8b9ae3258b5a7d/html5/thumbnails/2.jpg)
Outline
• Previously: 3D Sculpting Action Heroes– Generating base models
– Slicing into parts & adding joints
– Customizing via 3D sculpting tools
• Today: 3D Printing Action Heroes– Recap meshmixer & finish models
– Preparing parts for 3D printing
– 3D printing
– Cleaning up 3D printed parts
• Adding electronics to 3D printed Action Heroes– April 24th
– Make them interactive
– Electronics & coding
Anna Gerber
3D Printing Action Heroes
![Page 3: 3D Printing Action Heroes](https://reader034.vdocument.in/reader034/viewer/2022051521/5a6e5ddd7f8b9ae3258b5a7d/html5/thumbnails/3.jpg)
Outline
• Decide on which models you want to use– Models you created yourself
– Adapt models from other sources
• Use Meshmixer to:– Scale models to ~18cm
– Add joints, magnet mounts and other structural features
– Add mount points for electronics components
– Customize appearance with 3D scuplting tools
• Prepare models for printing & export to STL
• Orient models for printing
• How to use the 3D printers
• How to clean up printed parts
Anna Gerber
3D Printing Action Heroes
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Sources for models
• Character mesh generators
• Thingiverse– http://www.thingiverse.com/
– Use Creative Commons licensed models
• Model Resource– From games, for personal use only
– http://www.models-resource.com/
• Create a model of someone's head– Use 123DCatch app to create model from photos
• http://www.123dapp.com/catch
– Use a Kinect & Microsoft's 3D Scan app• (Windows only)
• http://microsoft.com/3d
Anna Gerber
3D Printing Action Heroes
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Character Mesh Generators
• Use character mesh generators to save time:• Make Human
– Free & Open Source
– http://www.makehuman.org/
– License of generated characters: CC0
• Mixamo Fuse (Now owned by Adobe)– https://www.mixamo.com/fuse
– Free preview requires Adobe account
– Royalty free use of generated models allowed for 3D prints but you cannot sell the generated models directly
• AutoDesk Character Generator– http://area.autodesk.com/products/charactergenerator
– Free & Paid Subscription service
– Unrestricted usage of generated models
Anna Gerber
3D Printing Action Heroes
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MakeHuman
Anna Gerber
3D Printing Action Heroes
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Fuse
Anna Gerber
3D Printing Action Heroes
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AutoDesk Character Generator
Anna Gerber
3D Printing Action Heroes
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Export the character model
• Export model as OBJ format model
• AutoDesk Character Generator exports FBX –
convert these to OBJ using AutoDesk FBX
Converter or other 3D software
• Online converter:
– http://www.greentoken.de/onlineconv/
• We're using AutoDesk Meshmixer for 3D Sculpting:
– http://www.meshmixer.com/
– Free software for Windows, Mac or Linux
• Alternative sculpting programs include Sculptris & Z-
Brush
Anna Gerber
3D Printing Action Heroes
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Scales
You'll need to scale your model to Action Hero
size. Popular scales:
• 1:4 (18") common for collector dolls
• 1:6 (12") i.e. original G.I. Joe scale
• 1:10 (7") currently the most popular size
• 1:12 (5 -6") 90s Action Toys
• 1:18 (4") kids action figures e.g. Star Wars
We'll use 1:10 scale i.e. around 15 – 18 cm tall
Anna Gerber
3D Printing Action Heroes
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Import OBJ model to Meshmixer
Anna Gerber
3D Printing Action Heroes
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Scale Model in Meshmixer
• Adjust scale via Edit > Transform so that the model
is around 15 – 18 cm tall
• Red = X
• Green = Y
• Blue = Z
Anna Gerber
3D Printing Action Heroes
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Ball Joints
• We're using a ball joint system:
– Ball joints fit into sockets
– Parts held together with elastic
• Alternative joint systems include:
– Print-in-place ball joints
– Snap together joints
e.g. see Open Source Action Figure
by Jason Welsh http://www.thingiverse.com/thing:116571
– Scale by 0.4 if you are using these parts
Anna Gerber
3D Printing Action Heroes
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Slice model into parts
• Use the Plane cut tool to separate limbs
• Use Select brush then Edit > Separate for more
control
Anna Gerber
3D Printing Action Heroes
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Add balls joints to parts
Anna Gerber
3D Printing Action Heroes
Add ball, use Transform tool to scale to appropriate size and move into position
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Anna Gerber
3D Printing Action Heroes
Combine & Make solid, then use sculpting tools to refine model & blend joint onto part
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Customize parts
• Use sculpting tools to refine and modify parts
Anna Gerber
3D Printing Action Heroes
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Joints for elbows & knees
• Elbow & knee joints can be created as separate
parts if desired, for maximum flexibility
Anna Gerber
3D Printing Action Heroes
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Torso joint
• Slice torso using select tool
• Mesh mix cylinder to extend torso base
• Hollow out parts
• Add strut across inside of torso base for elastic
• Add length to neck
Anna Gerber
3D Printing Action Heroes
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Add sockets to parts
Anna Gerber
3D Printing Action Heroes
Place ball (slightly larger than joint ball), then use boolean diference to subtract
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Hollow out parts
Anna Gerber
3D Printing Action Heroes
Also use boolean difference to Create hollows in parts
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Add holes for elastic
Anna Gerber
3D Printing Action Heroes
Use a cylinder and boolean difference,Use sculpting tools to round edges
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Split head cap from head
• Use select brush for precise selection or use
slice tool for flat cut
Anna Gerber
3D Printing Action Heroes
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Hollow out head & eyes & add magnet
mounting points
Anna Gerber
3D Printing Action Heroes
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Add magnet mounts
• Round magnets hold head cap on: 3mm x1mm
– Use meshmix tool to add cylinders at least (6mm x 4mm), move into position
– Add a 3.5 mm x 1.5mm cylinder and use boolean difference to cut out the hole for the magnet
– Make solid, and use sculpting tools to blend into base model
Anna Gerber
3D Printing Action Heroes
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LED mounts
• LEDs are 5mm or 8mm in diameter. You'll have 2 single color and 2 multi-color LEDsto work with
– If you want to use LEDs for eyes, meshmix in a sphere and use boolean difference to hollow out space from inside the head
– Use sculpting tools to shape outside of eye sockets
– You can also use doll eyes, beads or 3D printed eyeballs for eyes
Anna Gerber
3D Printing Action Heroes
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Add magnet & electronics mounts
• Magnets on feet are 4mm x8mm cylinders
• Also add 2mm hole for wires (wires run up the legs from battery holder under feet)
• Microcontroller is 18mm x 25mm x 4mm– Make sure you cut out a big
enough space inside the torso to fit this
• Also leave space for the piezobuzzer (for beeps and sounds) & wires (11mm diameter x 12 mm high)
Anna Gerber
3D Printing Action Heroes
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Button mounts
• You can add pushbuttons to your figure to trigger
different behaviour (e.g. change colour of LEDs)
– Make space to mount inside head or cut out holes
from torso back if you want the buttons to be
visible
– Our buttons are 6mm x 6mm
Anna Gerber
3D Printing Action Heroes
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Add insignia
• Use meshmix tool to merge insignia on to the
figure (e.g. Iron-Man style chest medallion)
• Use boolean difference to punch cut-outs or thin
out shell of torso to be transparent if you want to
mount LEDs inside chest
Anna Gerber
3D Printing Action Heroes
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ANALYSIS AND PREP
Anna Gerber
3D Printing Action Heroes
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Meshmixer analysis tools - units
Use Analysis > Units / Dimensions tool to check part dimensions
Anna Gerber
3D Printing Action Heroes
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Meshmixer analysis tools - strength
Anna Gerber
3D Printing Action Heroes
Use Analysis > Strength tool to assess strength of the part – it should be all green
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Meshmixer analysis tools - measure
Anna Gerber
3D Printing Action Heroes
Use Analysis > Measure tool to measure between any points on the model e.g. to confirm that the magnet mounts are big enough
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Meshmixer analysis tools - Inspector
Anna Gerber
3D Printing Action Heroes
Use Analysis > Inspector tool for basic repair of holes
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Orientation
Select Analysis > Orientation for automatic orientation
Anna Gerber
3D Printing Action Heroes
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Fixing problems
Models need to be manifold to print (i.e. could exist as objects in the real world). Avoid:– Extra internal faces
– Holes in the mesh e.g. faces not properly connected
• Remove internal faces: Use Make Solid tool
• Holes: Use automatic repair or use select tool to select sides of hole, then use Bridge tool to fill them in
• Thin walls: Use select and then Edit > Extrude tool to thicken walls
Use NetFabb Basic auto-repair as a final step if your part has problems. They also provide an online repair service: https://netfabb.azurewebsites.net/
Anna Gerber
3D Printing Action Heroes
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Overhangs & Support
• Overhanging parts
will need support so
they don't suffer the
effects of gravity
• The Up! Printers will
generate support, or
we can manually
add it to the model
– Select Print
– Transform & Move
to Platform
– Add Supports
Anna Gerber
3D Printing Action Heroes
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Export to STL
Export to STL
format for 3D
printer via Export
button on Print
screen, or via
File > Export.
Then import STL
into Up! software
Anna Gerber
3D Printing Action Heroes
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Next steps
• Make a list of all parts required– Prepare printable versions for all parts
– Create mirror versions for left/right feet, limbs, hands
• Add your models to the USB stick
• Next session:– Adding electronics
– Soldering
– Microcontroller programming
– Assembling the figures
– Decoration: hair, eyes, costumes
– We'll discuss options for painting/finishing 3D printed parts, if you want to paint your figure after the workshop
Anna Gerber
3D Printing Action Heroes
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License
• This slide desk was authored by Anna Gerber,
April 2016 and may be shared or adapted under
a Creative Commons Attribution Share Alike (4.0
CC-BY-SA) license:
https://creativecommons.org/licenses/by-sa/4.0/
Anna Gerber
3D Printing Action Heroes