Subsystem Build & Test
Table of Contents
Team Vision for Subsystem Level Build & Test Phase
In this phase, the team planned to:
- Enable printing using the pellet extruder
- Complete cart design and purchase parts
- Complete testing of the power system
The team was able to accomplish most of the goals set for the current phase, and is still in the process of ordering parts for the cart.
Test Results Summary
In this phase of the project, the team tested the functionality of the printing system with the integration of the pellet extruder and the functionality of the power system.
To test the functionality of the print system, the team tried to perform a variety of prints using a pellet-feed as opposed to a filament feed. While most of the prints succeeded, initially there was a problem with the pellet extruder skipping steps and thus under-extruding. In order to solve this problem, the extruder temperature was increased and the print speed was reduced to 14mm/s.
To test the functionality of the power system, the team investigated the ability of the solar panels to charge the system battery, and then the ability of the battery to power the printer for a non-trivial amount of time.
The solar panels successfully charged the battery and the battery was in turn able to power the printer for a decent amount of time.
Risk and Problem TrackingBelow is the updated Risk Pareto chart for the Subsystem Build & Test phase.
Majority of the deltas between the previous and current phase arise from the elimination of the risks due to the laser. Most of the new risks involved the construction of the cart and the 3D-printing of system parts, such as the hopper.
The most recently updated risk management document can be found here