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| The item to be duplicated |
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| A hollow container used to give shape to molten or liquid material |
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| An object made by shaping molten or liquid material in a mold |
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| a feature of the original that could cause the cast to be trapped in the mold |
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Life Casting
(Five things you MUST do in preparation) |
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- Must use molding material that is specifically made to use on skin
- Make sure the model is not claustrophobic
- Make sure the model can breath
- Prepare for fatigue
- Discuss all processes in advance with your model |
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| An evaporative process for water based glues, used often (incorrectly) with chemically cured adhesives |
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| Fully completed chemical reaction resulting in adhesion |
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| How long the item to be glued must be clamped until the glue will support itself |
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| amount of time a contact adhesive must be allowed to "dry" before being joined |
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a chemical that can potentially induce and allergic reaction after multiple exposures
AND if you want to be super fancy...
A sensitizer is defined by OSHA as "a chemical that causes a substantial proportion of exposed people or animals to develop an allergic reaction in normal tissue after repeated exposure to the chemical."
The condition of being sensitized to a chemical is also called chemical hypersensitivity. |
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Elmer's Glue, Kindergarden Glue
Paper, Natural Fiber Fabrics
Cheap, paintable, tintable, mixable
Low strength, does not adhere to non-porous surfaces
Don't eat it! |
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Carpenter's Glue, Yellow Glue
Wood, Wood Fiber Products, Natural Fiber Fabrics
Cheap, Strong, Widely available
Resists paint, does not adhere to non-porous surfaces
Don't eat it! |
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Hot Melt Glue
Crafts, some plastics, fabric, trim, feathers, some foams
Cheap, widely available, fast
NOT AN ADHESIVE!!, will melt many products, will discolor some fabrics, will release if reheated, low strength
It will burn you! some melted plastics will release toxic gases |
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Tacky Glue
Crafts, some plastics, fabric, trim, feathers, some foams
Cheap, flexible, tintable
Low strength
Don't eat! |
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Chap Stick
Paper
Archival, will not discolor, cheap, will not wrinkle paper
Low strength
Don't eat it! |
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Liquid Nails
(must use correct sub-type)
Wood, drywall, some plastics, glass, mirrors, some tile, some masonry, some metal
Strong, Widely available, versatile
long clamp time, will melt foam, off-glasses
Use with proper ventilation, avoid skin contact flammable until dry |
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Super Glue, Krazy Glue
Some plastics, glass, some tile, some masonry, some metal
Strong, fast set, waterproof
Short shelf life, will stick to skin, low shear strength
Flammable until dry, reactive to cotton and some wood, do not rip glue from skin |
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Booger Glue
Paper
Temporary, removes cleanly, flexible
Not for long term use
Flammable until dry, use with proper ventilation, some brands contain latex |
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Super 77. Super 90
Applications, paper, some plastics, some metal, can be used as a primer
easy to apply to large area
Low-strength, must be allowed to tack, overspray, will melt most foams
flammable until dry, use with proper ventilation |
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5-minute epoxy, two-part epoxy
Some plastics, some metals, electronics
very strong, waterproof
Very permanent, exothermic reaction can melt some material
sensitizer, use with proper ventilation |
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Metal, Wood, fiberglass, pvc, concrete, glass, some fabric
Very strong, waterproof, heat resistant, acid resistant
6 hour clamp time, 15 hour set time
Skin irritant, flammable until set |
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Metal, wood, fiberglass, pvc, concrete, glass, some fabric
Very strong, waterproof, heat resistant, paintable, sandable
1 hour clamp time, 24 hour set time, specific preparation, expands
sensitizer |
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non-similar surfaces, glass, clay, fabric, ceramic, wood, metal
Very strong, waterproof, washable, flexible, dries clear
10 minute tack time, 48 cure time, will deface wood, will melt some foams
Skin irritant |
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Silicone Caulk
Glass, waterproofing
Bonds well to glass
will not stick to porous materials
mildly flammable |
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| Ratio of Ultimate Breaking Strength against Working Load limit |
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Ultimate Breaking Strength
The max a material can carry before breaking |
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| A sudden intense force place upon the system |
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Working Load Limit
The maximum static load permitted by the manufacturer. |
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| A load with forces that move or change when acting on a structure. |
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| A load in which the forces DO NOT move or change when acting on a structure. |
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| This is yelled when something has been dropped. Do NOT look up. Try carefully move away from the person above. |
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| In terms of rigging, this means that something has caused the fly system to fail. This is very dangerous. Get out of the theatre immediately. IMMEDIATELY. |
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Cable Clip
Never saddle a dead horse
The saddle of the clip rests against the "live", long portion of the wire, while the bolt rests on the "dead", short end of the wire. |
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- Know the system
- Keep the equipment in safe working order
- Know how to use it
- Keep your concentration |
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Free Body Diagram (FBD):
The purpose of free body diagram is to simplify the situation you are looking at.
In a FBD, the object is isolated, or free, from all of its support members, and shows all of the applied and reactive forces acting on it.
This is an example using a FBD to show the forces acting on a see-saw beam. |
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An object is in equilibrium when the algebraic sum of all the forces acting upon it equal zero.
Loading and unloading are the most stressful events to the rigging system Movement changes the direction of forces Movement increases and decreases the force at different moments |
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Forces seek equilibrium
Bridle angle is often over looked
Moment of force is greatly affected by angle |
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Compression
Tension
Shear
Torsion |
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| A low melting alloy, esp. one based on lead and tin or (for higher temperatures) on brass or silver, used for joining less fusible materials. |
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| Form, fix, or join by soldering with an alloy of copper and zinc at high temperature |
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| To fix or join by melting the base metals as well as introducing a filler material of the same type, higher temperature metals such as iron, steel, steel alloys, and alluminum |
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| used to apply heat to the solder and the component |
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| Soldering with a perforated and padded circuit board (what did in class) |
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| Smaller, more delicate process that requires advanced skills and some magnification equipment |
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| LCD Device used to present images and text on reflective surfaces |
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Video Graphics Array
Standard connector for computer to projector communication |
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| Unit of measurement for visible light |
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| distance between projector and projection surface |
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| ratio of throw distance to projection size |
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| an effect caused by the throw distance being different for the top and bottom of the projection surface |
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Video Graphic Array
- Found on all PC computers, some televisions, and all home/office projectors |
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DLP Projector
(Basic Working Parts) |
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| equal to one foot-candle falling on one square foot of area |
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| amount of light coming from the source |
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| amount of light reflected back from a surface |
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Throw Distance:
If zoom ratio is 1:1, then... |
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Throw Distance:
If zoom ratio is 1:2, then... |
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Throw Distance:
If zoom ratio is X, then... |
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