DIGITAL DESIGN + FABRICATION SM1, 2017 M1 JOURNAL - Party Whistle Brett McColl
832138 Josh Russo - Group 1
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Measured Drawings
62.5 mm
20 mm
TOP
20mm
40mm
90 mm
26 mm
FRONT
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RIGHT
Top Left: Measured entire object with ruler. Also expanded foil tube to measure Top Right: Measured only plastic section of whistle, without any other parts attached
Bottom Left: Using a hacksaw, opened up the plastic whistle to measure interior components Bottom Right: Using a ruler and visual analysis, determined size and position of internal components
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Analysis Components: Top: Plastic Whistle Made of solid plastic, with small parts inside which vibrate when blown to make a loud noise Middle: Tube Made of reflective foil. This works in conjunction with the coiled plastic to unroll when air is blown through the whistle. Bottom: Coiled Plastic Made of hard, but flexible plastic. This is glued to the foil to create the tube of the whistle. It also remains coiled unless pressure is applied to it
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OPERATION Blowing into the plastic whistle creates air pressure inside the foil. The foil is then uncoiled, and air escapes out the end. Whilst this occurs, a small tab at the front of the whistle vibrates, creating the loud sound.
20mm
40mm
290 mm
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Digital Model
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First Row Left: Outline of the end of plastic whistle. About to initiate 2-Rail Sweep command First Row Right: Combined two poly-surfaces to create the first interior component of the plastic whistle
Second Row Left: Inserted large component of the whistle. Using Boolean commands to remove unwanted excess Second Row Right: All interior components of whistle in place. Used mirror command for side pieces.
Third Row Left: Created a spiral to act as the coiled foil Third Row Right: Used the Two Rail Sweep command to create the solid coil.
Fourth Row: Moved coil into position. About to use Two Rail Sweep command to join the coil and the whistle to finish the model
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Sketch Model This sketch model is based around the coiled plastic rolls. They are stretched between two whistle segments, yet are trying to coil back into their original shape, creating an arrangement of disarray.
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First Row Left: There were many issues when working with these materials. Firstly, the glue
available was not sufficient to bond plastic well, so large amounts had to be used.
First Row Right: The thought process was that wooden matchsticks would force the plastic coil to straighten. While this did work, the plastic would still coil at the ends, twisting into undesirable shapes. Second Row Left: The plastic coils did not like being glued together, and required a lot of glue and time to stay together. Second Row Middle: Once the coils were joined, connecting them to the plastic whistle was a challenge. Again, copious amounts of glue was required, which damaged the visual appeal of the model. Second Row Right: Same situation applied, where copious amounts of glue to bond the model was needed. Third Row Left: Again, the amount of glue required to connect the coils to the whistle damaged the model. Foil was used to straighten the members out, and provide an overall shape for the model. Third Row Right: However, an issue with the foil arose. The foil would not work with glue at all. To combat this, clear tape was used. Although the model is complete, it does not look as good as envisioned.
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Sketch Design #1 Space by Exclusion
Eyeholes can be opened or closed to allow user to see or block sense of sight Cloth stretched over thin, yet strong skeleton
Long nose can block sense of smell, as well as allow user to peer at hands
Sense of hearing can be blocked by headphones integrated into design
Sense of touch negated by large cloth draped over body
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How does this respond to your personal space? This concept is based upon the bird-masks worn by doctors to combat the black death. By blocking all five senses, the user would not know whether or not thier personal space is being invaded, and they remain safe inside their own world.
Sketch Design #2 Space by Defense When fully expanded, cloth is stretched tightly between members. Material would be very stiff, and would require Cloth wrapped over strong members
considerable force to break or move
When fully expanded, cloth is raised behind the users head, in order to protect their blind side from unwanted contact
Whilst in storage, cloth and members fold inwards to
How does this respond to your personal space?
protect the mechanism
Unfolding mechanism pushes outwards, meaning that
Based upon the frills of a lizard, this design enables users to create their own personal space. The “frills” can be retracted close to the body for storage. They can easily expand outwards to push people away from the user, and creates a large space where people cannot reach the user.
anyone in the radius of the “frills” will be pushed out
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Sketch Design #3 Space by Aggression
Blade can be retracted when not in use. A protective cover will need to be used to ensure the user doesn’t accedinetly hurt themselves or others
Sharp blade is attached to underside of arms. This is so the user can insticntively hurt an attacker by raising thier arms to thier head whilst protecting themselves.
Strong, tear-proof clothed underneath strong skeleton
The skeleton is hinged at the elbow, allowing the user to move thier arms freely. The design only covers the arms, so any other movements are unrestricted by this design
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How does this respond to your personal space? The idea for this concept came from medieval suits of armor. This design is not meant to defend the user against general personal space intrusions, but rather when the users personal space is intruded by aggression. Such an intrusion could be if the user was being mugged or assaulted. As such, the design focuses on protection of the arms, with a blade mechanism attached to protect the user, which can be retracted. The design also allows the user to function normally.
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Appendix Left: Lines and Polylines Right: Curves
Left: Creation of Planar Surfaces Right: Trim and Planar Surfaces
Left and Right: Revolve
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Left and Right: Rail Revolve
Left: One Rail Sweep Right: One Rail Sweep with Closed Curves
Left: Two Rail Sweep Right: Two Rail Sweep and Boolean Commands
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