VUR4

Type

Shape / Profile

Examples

Sheet

Flat Plane

Sheet metal ⅛” polycarbonate sheet Plywood

Solid Billet

“Thick” rectangular beam / block

4” x 4” x 6” solid aluminum billet 2” x 2” x 2” acetal block

Solid Bar

“Thin” rectangular beam

2x4 wood planks ¼” x 3” aluminum bars

Hollow Bar

Hollow rectangular beam

1” x 1”, 1/32” wall aluminum box tube

Solid Rod

Cylinder, Hexagonal or Rounded Hexagonal Stock

¼” steel rod ¼” acetal rod VEXpro Hex Shaft

Hollow Rod / Tube

Hollow Cylinder, Drilled/Threaded Hexagonal or Rounded Hexagonal Stock

Copper tubing PVC pipe VEXpro ThunderHex Stock

Angle

90° “L” shape

1” x 1”, 1/16” thickness aluminum angle

U- / C-Channel

“U” or “C”. See this Q&A.

1/4” High x 1” Wide Aluminum U-Channel

Non-Metal 3D Printer Filament

Thin cylinder

PLA or TPU filament Composite nylon filament (e.g. Markforged OnyxTM)

Synthetic Polymer used for Molding

Liquid

Polyurethane Silicone

Solid Sphere

Solid (not hollow) uniformly rounded stock

Steel ball bearing Shaped wood finial

Teams are not required to exhaustively define the specific material type for each component of every Fabricated Part in their Engineering Notebook, as it should be obvious from the engineering drawings required by <VUR7>. However, unusual parts should be expected to receive increased scrutiny. If any materials do not easily fall into one of these categories, then that is probably an indication that it is not intended to be a legal type of Raw Stock. If a Team cannot demonstrate that the component was made from a legal type of Raw Stock, then they will be asked to remove it from their Robot.

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