Gate
An opening at the end of a runner, which directs the flow of molten material into the mold cavity.
- Processes
- Polymer Processing
- Blow Molding
- Injection Molding
- Metal Injection Molding
- Thermoforming
- Metal Casting
- Centrifugal Casting
- Die Casting
- Investment Casting
- Permanent Mold
- Sand Casting
- Shell Mold Casting
- Machining
- Milling
- Turning
- Hole-making
- Drill Size Chart
- Tap Size Chart
- Sheet Metal Fabrication
- Forming
- Cutting with shear
- Cutting without shear
- Gauge Size Chart
- Additive Fabrication
- SLA
- FDM
- SLS
- DMLS
- 3D Printing
- Inkjet Printing
- Jetted Photopolymer
- LOM
- Materials
- Metals
- Plastics
- Case Studies
- Cost Analysis
- Part Redesign
- Product Development
- Resources
- Curriculum Resources
- Glossary
Glossary
G
Gears
Cylindrical parts with teeth around their perimeter which can mesh with other toothed parts to transmit motion. (Includes: cogs, pinions, sprockets, etc)
Glass Transition Temperature (Tg)
he approximate midpoint of the brittle to rubbery temperature range of a polymer. The glass transition temperature of a polymer will often appear as a spike on a difference scanning calorimeter (DSC).
Gray Cast Iron
A cast iron that gives a gray fracture due to the presence of flake graphite. Often called gray iron.
Grooving
A turning operation in which a single-point tool moves radially, into the side of the workpiece, cutting a groove equal in width to the cutting tool. If the desired groove width is larger than the tool width, multiple adjacent grooves will be cut. A profiling cut can be performed to smooth the surface of multiple grooves. Special form tools can also be used to create grooves of varying geometries.
Grooving |
Grooving (Form tools) |
Gusset
A thin triangular support structure that joins the vertical side of a protrusion to the horizontal base from which it protrudes.