Minerich Digital Boat Presentation

7/29/2019 Minerich Digital Boat Presentation

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Digital CraftsmanshipOrnamental Structure for the Novice Boatbuilder

Mary Jo Minerich

ARCH 794, Professor Ming Tang

August 27, 2011


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Defining Geometry

Manual Craftsman

Hull Geometry is created through a process called lofting, which breaks down surfaces and curves into a series of cross-sections.

Digital Craftsman

Hull Geometry is created through the mathematical generation of cross-sections whose relationships define the crafts surfaces and curves. Script canbe adapted to include performance evaluations and criteria.

Flexible Small Boat Design Script by Mary Jo Minerich

August 2011

Hull Loft by Greg Rossel, from The Boatbuilders Apprentice.


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A

A

B

B

C

C

Cross-Section


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D

D

D

E

E

Contour

Flexible Contour Cross-sections can

scaled to varying degrees in the hori-

zontal and vertical dimensions and

be moved to varying distances from

a center point, in order to define thecurvature of the boat along its length.


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Cap

F

G

F

G

F

G

Bow and Stern

Bow and Stern cross-sections arescaled and rotated 90 degrees to the

center cross-section.


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Digital Craftsmanship

Geometry of boat is joined into a single polysurface that can be

broken down in many different ways for digital fabircation and

ease of assembly. This fabrication examines the economic and

ornamntal potential of a slotted waffletype structure created fromplywood.

Manual Craftsmanship

Fabrication requires high quality wood to be steam bent into indi-

vidual ribs around separately constructed formwork. Deviations can

threaten the structural integrity of the boat.


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Waffle Structure Definition

Structure broken into self-reinforcing slotted

cross sections along horizontal and vertical

axis. Unfortunately, waffle definition found has

limited adaptability.


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Re-Structure

Waffle Structure Definition

Structure re-oriented to 45 degrees to

improve ornamental character of structure.


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Cut

Material Economy

All required pieces for 3=1-0 model were

able to be cut from a single sheet of 40 x 30

chip board.


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Fit


The inflexibility of the Waffle script required an additional piece to include the

bow and stern cruves. This was easily pulled from the original orientation of

the structrure produced.


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Wrap


At full scale dacron impregnated with epoxy provides a

watertight and durable skin. For the model, I used heat

shrinking window wrap.

Ornamental Structure

The diagonal structure of the plywood creates intricate patterns

that will be visible through the boats skin.

Supplemental Structure

Some additional pieces were added to compensate for material

issues due to scale and fabrication, and the inflexibility of the

waffle-script.

Documents

Minerich Digital Boat Presentation