Figure 1: The Imagineers (from left to right): Vincent Hurtado, Shaela Hogue, Erin Pyne, Oscar Bermudez

Abstract[edit | edit source]

The purpose of this project is to create a wedging table that will be used in Zane Middle School's Art class. The Imagineers team created and designed a wedging table to provide a reliable and efficient area to wedge clay. The Imagineers was formed as part of Cal Poly Humboldt's Engineering 215: Introduction to Design class, taught by Camille Penny.

Background[edit | edit source]

Cal Poly Humboldt's Engineering 215: Introduction to Design provides its class with experience in design projects, team building, and communication skills. The Imagineers team was formed as part of an assignment for Engineering 215. The team's task was to provide Zane Middle School with a wedging table for their Art class. The team members include Oscar Bermudez, Shaela Hogue, Vincent Hurtado, and Erin Pyne.

Problem Statement[edit | edit source]

The objective of this project was to provide Zane Middle School with a portable area to wedge clay. The Imagineers designed a wedging table that can be portable and is also able to be stationary when in use, the table also provides storage and a side ledge to place dry clay.

Criteria[edit | edit source]

Below is a table listing and defining the criteria that was considered when choosing the projects' final design.

Criterion Definitions
Safety The table should not contain any toxic chemicals or sharp metal.
Sturdiness The table should not teeter over, wood and metal must be securely attached throughout the table, and the locking casters must be able to remain locked.
Portability The table should move, and be able to lock in place.
Durability/Longevity The table should need little maintenance, and should be able to withstand minor wear and tear.
Cost The cost for materials that compose the table cannot exceed the amount of $300; this includes $75 per group member.
Environmental Impact/Sustainability Reusable items would be preferable to construct the table.
Aesthetics The table needs to be aesthetically appealing.

Description of final project[edit | edit source]

Figure 2: Final design hand drawn by Shaela Hogue
Figure 3: Final design in ACAD by Shaela Hogue
The Delphi Method was used to choose a design from the many alternative solutions created. The Delphi Method is where each one of the alternative designs is given scores in categories corresponding to each criterion. The Delphi Method uses a matrix with this data to give each design a respective score. The design with the greatest raking would be chosen as the final design. The solution with the greatest ranking was "Wedge and a Ledge" design (right). This design meets the project criteria most appropriately. It is appealing, affordable, made of durable materials, uses materials with low impact to the environment, portable, is one of the safer alternatives, and is reinforced with three crossbars which provide it with support.

Costs[edit | edit source]

Figure 4: Design Cost in hours

Below and is a table showing the cost of the materials used along with the grand total (the total does not include the value of materials that were donated). Figure 4 shows the amount of hours spent in each phase of the design project along with the total amount of hours.

Material Source Cost ($) Quantity Total ($)
Aluminum posts Arcata Scrap 7.50 2 15.00
Casters Ace Hardware 7.99 4 31.96
Hinges Ace Hardware 5.39 4 21.56
Micellaneous Hardware & etc. Ace Hardware NA 1 32.76
Screws for Casters Ace Hardware .22 16 3.52
Screws for plaster box Ace Hardware NA 16 NA
Wood Donated by Almquist Lumber NA 2 boards, 2 sheets of plywood NA
Wood glue Donated by Almquist Lumber NA 1 NA
Plaster of paris Client 21.00 3 63.00
Total Cost $168

Testing Results[edit | edit source]

The original design that was chosen was modified along the way to improve any of the obstacles that were encountered. Some of the things that were adjusted were the replacement of shelves instead of drawers. An implementation of a latch on the caster mechanism improved its portability capability.

How to build[edit | edit source]

How To Build Wedge and a Ledge
Image Steps
Step 1 Cutting the aluminum tubing for legs.
Step 2 Drill pilot holes where necessary into the aluminum legs.
Step 3 Assemble the wood frame and shelving.
Step 4 To keep the wood frame from having water damage issues, caulking was used on the seams and a sealant was used on the wood surfaces. We used a salad bowl finishing stain to seal the wood.
Step 5 Drill pilot holes where necessary to attach aluminum legs.
Step 6 Assemble and attach the caster mechanism.
Step 7 Attach the legs to the top and shelves.
Step 8 Mix plaster and pour letting it set.
Step 9 Deliver the wedging table to the client.

Next Steps[edit | edit source]

The "Wedge and a Ledge" design will be placed in the art room storage area while it is not in use. The table will remain stationary while the caster locking mechanism is disengaged. When the table needs to be used, the mechanism must be engaged for the table to be rolled to the designated wedging area. Once in that area, the mechanism can be disengaged so that the table remains stationary during use.

Results[edit | edit source]

As of Monday, 2 May 2016, the "Wedge and a Ledge" design was completed and is ready for use by Ken Weiderman and his students. We successfully demonstrated our constructed design to judges, our peers, and our instructor during a presentation to Zane Middle School.

Group Member Pages[edit | edit source]

References[edit | edit source]

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