Dip ends of blowpipes into molten glass to collect gobs on pipe heads, or cut gobs from molten glass, using shears.
Heat glass to pliable stage, using gas flames or ovens, and rotating glass to heat it uniformly.
Inspect, weigh, and measure products to verify conformance to specifications, using instruments such as micrometers, calipers, magnifiers, and rulers.
Place electrodes in tube ends and heat them with glass burners to fuse them into place.
Place glass into dies or molds of presses, and control presses to form products such as glassware components or optical blanks.
Place rubber hoses on ends of tubing, and charge tubing with gas.
Repair broken scrolls by replacing them with new sections of tubing.
Set up and adjust machine press stroke lengths and pressures, and regulate oven temperatures according to glass types to be processed.
Shape, bend, or join sections of glass, using paddles, pressing and flattening hand tools, or cork.
Spray or swab molds with oil solutions to prevent adhesion of glass.
Strike necks of finished articles to separate articles from blowpipes.
Superimpose bent tubing on asbestos patterns to ensure accuracy.
Blow tubing into specified shapes to prevent glass from collapsing, using compressed air or own breath, or blow and rotate gathers in molds or on boards to obtain final shapes.
Cut lengths of tubing to specified sizes, using files or cutting wheels.
Design and create glass objects, using blowpipes and artisans' hand tools and equipment.
Determine types and quantities of glass required to fabricate products.
Develop sketches of glass products into blueprint specifications, applying knowledge of glass technology and glass blowing.
Operate and maintain finishing machines to grind, drill, sand, bevel, decorate, wash, and/or polish glass or glass products.
Operate electric kilns that heat glass sheets and molds to the shape and curve of metal jigs.
Record manufacturing information such as quantities, sizes, and types of goods produced.
Production and Processing -- Knowledge of raw materials, production processes, quality control, costs, and other techniques for maximizing the effective manufacture and distribution of goods.
Design -- Knowledge of design techniques, tools, and principles involved in production of precision technical plans, blueprints, drawings, and models.
Visualization -- The ability to imagine how something will look after it is moved around or when its parts are moved or rearranged.
Manual Dexterity -- The ability to quickly move your hand, your hand together with your arm, or your two hands to grasp, manipulate, or assemble objects.
Arm-Hand Steadiness -- The ability to keep your hand and arm steady while moving your arm or while holding your arm and hand in one position.
Wrist-Finger Speed -- The ability to make fast, simple, repeated movements of the fingers, hands, and wrists.
Handling and Moving Objects -- Using hands and arms in handling, installing, positioning, and moving materials, and manipulating things.
Controlling Machines and Processes -- Using either control mechanisms or direct physical activity to operate machines or processes (not including computers or vehicles).
Getting Information -- Observing, receiving, and otherwise obtaining information from all relevant sources.
Performing General Physical Activities -- Performing physical activities that require considerable use of your arms and legs and moving your whole body, such as climbing, lifting, balancing, walking, stooping, and handling of materials.
Evaluating Information to Determine Compliance with Standards -- Using relevant information and individual judgment to determine whether events or processes comply with laws, regulations, or standards.
Monitor Processes, Materials, or Surroundings -- Monitoring and reviewing information from materials, events, or the environment, to detect or assess problems.
Estimating the Quantifiable Characteristics of Products, Events, or Information -- Estimating sizes, distances, and quantities; or determining time, costs, resources, or materials needed to perform a work activity.