# Tasks & work activities — glass-blower

Source: O*NET 30.3, occupation 51-9195.04 (Glass Blowers, Molders, Benders, and Finishers).

## Task statements

- **[Core]** Inspect, weigh, and measure products to verify conformance to specifications, using instruments such as micrometers, calipers, magnifiers, or rulers.
- **[Core]** Record manufacturing information, such as quantities, sizes, or types of goods produced.
- **[Core]** Heat glass to pliable stage, using gas flames or ovens and rotating glass to heat it uniformly.
- **[Supplemental]** 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.
- **[Supplemental]** Set up and adjust machine press stroke lengths and pressures and regulate oven temperatures, according to glass types to be processed.
- **[Supplemental]** Shape, bend, or join sections of glass, using paddles, pressing and flattening hand tools, or cork.
- **[Supplemental]** Develop sketches of glass products into blueprint specifications, applying knowledge of glass technology and glass blowing.
- **[Supplemental]** Determine types and quantities of glass required to fabricate products.
- **[Supplemental]** Place rubber hoses on ends of tubing and charge tubing with gas.
- **[Supplemental]** Superimpose bent tubing on asbestos patterns to ensure accuracy.
- **[Supplemental]** Spray or swab molds with oil solutions to prevent adhesion of glass.
- **[Supplemental]** Cut lengths of tubing to specified sizes, using files or cutting wheels.
- **[Supplemental]** Place glass into dies or molds of presses and control presses to form products, such as glassware components or optical blanks.
- **[Supplemental]** Design and create glass objects, using blowpipes and artisans' hand tools and equipment.
- **[Supplemental]** Repair broken scrolls by replacing them with new sections of tubing.
- **[Supplemental]** Operate and maintain finishing machines to grind, drill, sand, bevel, decorate, wash, or polish glass or glass products.

## Detailed work activities

- Adjust temperature controls of ovens or other heating equipment.
- Apply parting agents or other solutions to molds.
- Create diagrams or blueprints for workpieces or products.
- Cut industrial materials in preparation for fabrication or processing.
- Design jewelry or decorative objects.
- Draw guide lines or markings on materials or workpieces using patterns or other references.
- Heat material or workpieces to prepare for or complete production.
- Maintain production or processing equipment.
- Measure dimensions of completed products or workpieces to verify conformance to specifications.
- Mount materials or workpieces onto production equipment.
- Operate grinding equipment.
- Place materials into molds.
- Record operational or production data.
- Repair production equipment or tools.
- Replace worn equipment components.
- Select production input materials.
- Shape glass or similar materials.
- Weigh finished products.