Technical Challenges: Mounting a Tyrannosaur Skull in Exploded View - | Amy Kowalchuk
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Technical Challenges: Mounting a Tyrannosaur Skull
in Exploded View
| Amy Kowalchuk;
amy.kowalchuk@gov.ab.ca
TMP2001.036.0001 Milk River Daspletosaur (AKA, MR Daspleto) • Daspletosaurus torosus • Found near Manyberries, Alberta in 2000 • Judith River formation • Collection continued sporadically 2000 – 2011 • Nearly complete skull (missing Vomer) and partial skeleton
| THE SPECIMEN
| THE SPECIMEN
| THE SPECIMEN
| THE SPECIMEN
| THE SPECIMEN
THE CONCEPT
| DESIGN CONCEPTS
BEAUCHENE SKULL
| DESIGN CONCEPTS
- These were the largest/
most robust elements
- Both Dentaries and Maxillae were cast in Aqua-Resin (S3 + L)
- Three-part molds made of Smooth-On Dragon Skin 10 FAST, and Smooth-On
Rebound 25
| THE SPECIMEN| THE SPECIMEN
| PHOTOGRAMMETRY
PHOTOGRAPHY
• Thin bones were set into modeling
clay supports
• Allowed thin edges to be captured
in photographs
• Minimized contact with thin edges
| PHOTOGRAMMETRY| THE SPECIMEN
PHOTO PROCESSING
• Agisoft PhotoScan Professional
• Software used to create high
resolution 3D digital models
• Processing in 4 separate steps
- Align photos
- Optimize cameras
- Build dense cloud
- Build mesh
| PHOTOGRAMMETRYStep 1: ALIGN PHOTOS
Gives you a sparse point cloud!
| PHOTOGRAMMETRYStep 2: OPTIMIZE CAMERAS
| PHOTOGRAMMETRYStep 2: OPTIMIZE CAMERAS
| PHOTOGRAMMETRYStep 3: BUILD DENSE CLOUD
| PHOTOGRAMMETRYStep 4: BUILD MESH
| PHOTOGRAMMETRYMERGING ‘CHUNKS’
- Important when there are - Place numbered markers
too many photographs to on specific landmarks that
process in one batch are shared between both
chunks
| PHOTOGRAMMETRYStep 4: SCALING THE MODEL
| PHOTOGRAMMETRY| PHOTOGRAMMETRY
| BUILDING THE MOUNT
| SUSPENDING THE SKULL
| PLACING THE BONES
| PLACING THE BONES
| ARTICULATING THE PRINTS
PERMANENTLY ARTICULATING ELEMENTS
- Dentary and Surangular attached using
¼” forged steel bar
- Other elements attached by drilling
holes in casts at site of articulation
- Inserted aluminium or brass pins
- Epoxied pins into place using Devcon 2
Ton Epoxy
| ARTICULATING THE PRINTS| FORGING
| THE TEAM
| TWO SMITHS – Kitchener, ON
| SANDRA DUNN – Master Blacksmith
| BRONSON KOZDAS – Apprentice
| LYNN GRATZ – Independent Blacksmith
| TOOLS
| TOOLS
| THE FORGE
| POWER HAMMER
- Organic feel, with smooth
curved branches
- Resembles a tree, with one
main ‘trunk’ that branches into
smaller branches
| MOUNT DESIGN| FORGING
| FORGING
| FORGING
| FORGING
| FORGING
| FORGING – TECHNICAL INPUT
| FORGING
| THE FACE OF MR DASPLETO
| THE FACE OF MR DASPLETO
| ‘THE TREE’
| ‘THE TREE’
| PAINTING THE CASTS
| PAINTING THE 3D PRINTS
| COLOR MATCHING THE SKULL
| TEETH
| ‘SHEEN’ ON THE TEETH
| THE DISPLAY
| THE DISPLAY
| THE DISPLAY
| THE DISPLAY
| THE DISPLAY
| THE DISPLAY
| THE DISPLAY
| THE DISPLAY
ACKNOWLEDGEMENTS • Drumheller and District Chamber of Commerce • Lorna O’brien – Project Manager • Lynn Gratz – Ton of Volunteer work on the mount • Two Smiths – Sandra Dunn and Bronson Kozdas • Sue Sabrowski, Christin Roper, Alanna Kho – Photography
QUESTIONS? | THE DISPLAY
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