Customer Handoff & Final Project Documentation
Table of Contents
Team Vision for Final Demo and Handoff
What did we plan?
- During this phase our team planned to complete the construction of our system. We also planned to finalize additional system components such as a movable cart and totes to collect digestate. In addition to finalizing the build we planned to test the system with non-food components. We also planned to present our system at Imagine RIT. After imagine we planned to do some testing which would include measuring the final push pull forces for the drawer.
What actually happened?
- The construction of the box was finalized and a cart was found and modified for our system. The system was tested with a mixture of dirt and salad before Imagine RIT. The system was successfully presented at Imagine and the larvae gathered quite the crowd. After Imagine minor finishing touches were made to the system like hot gluing any cracks in the system and measuring the final push pull forces. All system models were updated and documents were prepared for the customer handoff.
Building Results Summary
Main Body SubsystemAdjustments made during this phase:
- Support beams were added to the bottom support rails for the drawer. This added additional support to the protruding rails.
- Digestate ramps added to aid in digestate removal on both sides of the box.
- Aluminum shim added to the other side of the box.
Lid SubsystemAdjustments made during this phase:
- PVC pipe was cut in half
- The side of the PVC pipe was shaved down to a flat surface so it could sit flush against the wall of the system.
- The pipe pieces were cut at 45 degree angles to sit flush with each other at the corners of the system.
- The lid was then attached with screws
Pupae Collection Subsystem
- Guide ramps attached to the walls.
- Two one inch diameter holes were drilled into opposite wall sides .
- Two one inch threaded elbows were purchased.
- The elbows were inserted into the holes.
- Two metal fasteners were found.
- Two plastic bags were found and attached with the metal fasteners to the elbows.
Drawer SubsystemAdjustments made during this phase:
- Threaded rods were added to the drawer with the addition of a helicoil.
- The threaded rods made the drawers square.
- Threaded rods were cut to be flush with the wall of the drawer.
- Finishing touches made to the filter slots in the drawers. Slots were re-milled to enhance the ease of sliding the drawers in an out. The entire drawer had to be disassembled and reassembled.
- While disassembled on side wall from each drawer was shaved down about 1/16" to reduce the pulling force.
- Plastic was added to the center piece between both drawers to make fill in the holes in the center piece.
- Relocated the front handles so they cleared the filter area.
Picture of adjustments:
- Support rods were measured and cut.
- Rods were welded to the system.
- Epoxy was purchased to attach the filter.
- The filter was stretched and pressed across the filter frame.
- The filter material was epoxied to the frame.
- The excess filter material was cut.
- Filter handles were added to the outside of the filter. This enhances the easy of use for the filter and seals up the gap in the filter slot.
Leachate Draining SubsystemAdjustments made during this phase:
- Leachate collection pipe was attached to the base of the draining sheet.
- Material for the pipe was leftovers from the lid.
- A trash can was obtained to collect the leachate.
Picture of adjustments:
- Two large bins were purchased.
- These bins were placed under the digestate removal area to collect the falling digestate.
Movable Cart for Table Support
- Table found in the MSD storage area.
- Free table support
- Rail to push the cart was cut and re-welded so the sliding drawers cleared the rail.
Test Results Summary
Sliding Drawer Pulling Test
Results for Sliding Forces
- Weight of empty drawer: 9.3 lbs
- Weight of filter: 6.6 lbs
- Weight of combined drawer and filter: 15.9 lbs
- Side 1: Weight of pulling force with both drawers in series and no food: 23 lbs
- Side 2: Weight of pulling force with both drawers in series and no food: 19 lbs
- Weight of one drawer with food (5kg): 26.9 lbs
Dry Food Test
Summary of the Test
- A dry test was performed before Imagine RIT.
- Consistency of the material: Dirt, twigs, and leftover salad.
- The drawer was loaded into the system and dry materials were poured on top.
- The total volume of material added: 5 gallon bucket.
- The second drawer was attached.
- The operator pushed the other drawer through and out came the other drawer filled with digestate.
- The filter was then removed and the digestate was scrapped onto the ramp into the collection tote.
- Some materials got stuck in-between the middle divider and the wall. This might have been and issue due to the consistency of the material, for example there were twigs in the compost. The compost that will be loaded into the system will be grounded up.
- With more testing we hope that grinned compost will be pushed out of the space between the wall and the divider.
- If this does not solve the problem the middle piece might need to be adjusted so it does not sit flush with the wall.
Risk and Problem Tracking
Final Project Documentation
Final CAD drawings can be found here: https://edge.rit.edu/edge/P17422/public/MSDII%20Customer%20Handoff%20and%20Final%20Project%20Documentation/17422%20CAD%20Files%20May%2012%202017
Plans for Wrap-up
Gate Review Check List
1) Schedule Gate Review: Completed, Monday 5/15 at 3:00pm
2) SRATE System: Completed
3) Citation/ Listing of Engineering Standards: Completed None applied.
4) Technical Paper on EDGE: Completed
5) Completed Copyright form: Completed
6) Customer Hand-off: Completed
7) Workspace clean up: Completed
8) Team Level Evaluations: Completed
9) Peer Evaluation on MyCourses: Completed
10) Three Week Plans: Completed
11) Self Critique: Will be complete by everyone individually by Monday 5/15