Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by general context]
6. [joints and joint components]
7. joints (connections)
8. [joints by form]
9. butt joints

Anotations

Scope note:

Butt-joints in which the edges of the boards are not square with their faces due to the pitch of the sides, as used to make a box having a wider top than bottom. Examples of items requiring hopper joints are hoppers, bins, chutes, and other items. The difficulty in making this joint is in laying out the pieces to obtain the proper angle for the edges to meet.