Grade

5

4

3

2

1

Phase 0

The initial design is very well detailed and accounts for many differing design factors. The final product is clearly feasible to accomplish.

The initial design is moderately detailed and accounts for design factors. The final product is probably feasible to accomplish.

The initial design is detailed and accounts for some design factors, however more is needed to ensure the final product is likely to succeed.

The initial design lacks some key details and design considerations. The final product is unlikely to be feasible.

The initial design needs substantial details and design considerations accounted for. The final product is very unlikely to be feasible.

Phase 1

All parts in the assembly are very well designed. Models are efficient to 3D print and can easily be assembled. Tolerances are accounted for.

All parts in the assembly are designed properly and can be appropriately assembled. Tolerances are accounted for.

A few minor design flaws are present in the assembly. The mechanism is capable of being assembled, though not easily. Some tolerances are not accounted for.

Minor design flaws as well as some major ones are present in the assembly. Minor edits must be made so assembly is possible. Most tolerances are not accounted for.

Minor and major design flaws are clearly present in the assembly. Substantial edits must be made so assembly is possible. Tolerances are not accounted for.

Phase 2

All parts in the assembly are very well designed. Models are efficient to 3D print and can easily be assembled. Tolerances are accounted for.

All parts in the assembly are designed properly and can be appropriately assembled. Tolerances are accounted for.

A few minor design flaws are present in the assembly. The mechanism is capable of being assembled, though not easily. Some tolerances are not accounted for.

Minor design flaws as well as some major ones are present in the assembly. Minor edits must be made so assembly is possible. Most tolerances are not accounted for.

Minor and major design flaws are clearly present in the assembly. Substantial edits must be made so assembly is possible. Tolerances are not accounted for.

Phase 3 (Final Product)

Mechanism is capable of sustained, reliable, and substantial actuation. 

Mechanism is capable of actuation for a short period of time.  Some minor reliability issues may arise but they are quickly fixed. Movement  in the tail is present.

Mechanism is capable of actuation, although reliability issues have a chance of stopping it. Movement  in the tail is present, although limited.

Mechanism is somewhat capable of actuation. Reliability is poor and needs substantial time to fix. Movement  in the tail is somewhat present.

Mechanism is rarely capable of actuation. Reliability is very poor and requires a great amount of effort to repair. Movement in the tail is barely present.