156B Week 2

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • A full-on penguin design was drawn in SolidWorks

    • Fish shape was not done in CAD due to general dissatisfaction from the team with the concept of the fish with three abstract compartments.

  • Decision to 3D print base portion of baby tray

    • See if interlock lid works; how the seal is on the lid (waterproof?)

    • See if the size of the eating area and the compartments are desirable

    • If interlock has many bugs to work out, switch to snap-on and design around existing off the shelf design

Accomplishments from Previous Week

• • A 3D print ready penguin baby tray was done in SolidWorks

  • Finished individual component analyses on material, prototyping methods, lid considerations, and suction cup selection

  • Went to workshops for Adv. Machine Shop, MathCAD

  • Talked to Isaiah and Chris, decision to move forward with 3D printing base model

  • Called suction cup supplier to inquire about prices, need a minimum of $25 order to place an order

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• • Jinfeng: Order about $25 worth of suction cups

  • Nima: Find an off the shelf lid/container to use for snap-on

  • Ebrahim and Emmanuel: Begin the next phase of CAD -- depending on outcome of 3D print of interlock: improve interlock or immediately design snap-on to 3D print next prototype

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• • Sponsor called in sick, meeting was cancelled.

Instructor Comments from Last Meeting and Actions Taken to Address these Comments  (indicate date of comments and if via email or in person)

• • Don't wait on things, always do things in parallel to be efficient

  • Find examples of lids, and buy those lids

  • Need one person to be expert on injection molding: draft angles, parting lines, etc.

  • Come up with a list of things we need to know:

    • wall thickness

    • material

    • figure out details

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

• • More students expressed their approval of the penguin baby tray

  • One student suggested something similar to our original plan of 3D printing the base portion of baby tray and using foam core for the shape around the base for prototyping

Risks and Areas of Concern

• • How soon can we 3D print the base portion? How soon can we get our hands on suction cups?

  • Will the interlock work? Is the eating area what we want?

Resources or Information Required but not Available

• • N/A

Schedule

• • 3D print the base portion and have it in our hands next week

  • Get suction cups here by the end of next week

Budget (list amount spent and amount remaining)

• • $260 spent on 3D printer material (50 cubic inches)

  • $740 remaining

Progress on Report and Webpage

• • Uploaded individual component analyses

  • Did some work on the home page