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1.0 Prototype Planning and Documentation
Bill of materials
The first step in materials acquisition is to specifically identify the needed item. You must be very specific. For example, if you need an electric motor, you need to know beforehand the ratings of the motor for your application. What does the motor move? With this information, you can select from available motors. Looking at the list of all the parts of your design solution, brainstorm with your team all the materials you will need to build it.
The next step is to determine whether the specific item is unique to your project (in which case it will have to be fabricated) or it already exists. If it is unique, it will have to be made from raw materials such as wood, plastic, or metal. You can make the part yourself, or you can have it made by a person or company that your research leads you to. If the part already exists, you may purchase it or try to get it donated by the manufacturing company or by someone who has it. Obviously, a donation is preferred since your group has a limited budget. Using your interpersonal communication skills, you may contact an engineer, sales representative, or supervisor from a company with the item you need. Keep it local if possible. Refer to Activity 4.1.4 Professional Correspondence for tips on corresponding with potential donors.
Now that you have listed the materials, research the standard sizes, quantities, and costs of the different materials and determine what sizes you will use. Use a catalog or online resources. It may be necessary for you to draw the parts to scale to more accurately determine the quantities needed. Put the information into a table. Below is one example you may choose to follow.
Item
QTY
Description
Vendor
Cost
Notes
Himox Air Purifier
1x
Air purifier-(more details here)
Himox
$200
OKP Life K2
1x
Automated Vacuum-(more details here)
OKP Life
$150
Cadded Clips
4x
Cadded clips to hold the purifier to the autonomous base
(all cadded pieces combined are $35)
Made using a 3d printer w/ PETG filament
Cadded Purifier Base
1x
Cadded base is built to fit snugly around the purifier
(all cadded pieces combined are $35)
Made using a 3d printer w/ PETG filament
Cadded Autonomous Base
1x
Cadded base is built to fit snugly around the autonomous base
(all cadded pieces combined are $35)
Made using a 3d printer w/ PETG filament
Tools and Equipment
Item
Exists in Lab (Y/N)
Source if not in Lab
Outside Source Notes
Onshape Cadding Program
N
https://www.onshape.com/en/
3d Printer
N
Used an outside vendor
Y
List of Needed Knowledge
Item
Need Outside Assistance (Y/N)
Source
Outside Source Notes
Building
N
Us
Cadding
N
Us
Environmental Influence
Y
(Refer to source Docs)
What items pose the biggest challenge for your team? How do you plan to overcome those challenges?
Reverse engineering the air purifier and vacuum due to the complexity of the products. We will utilize the handbooks that came with them to determine what each part's purpose is and figure out how to utilize it.
While compiling these lists, did you have to determine an alternative plan for any items that you are concerned about acquiring?
No
Do you feel your use of materials is cost-effective? If not, what could you change for the design to be more cost-effective?
I feel that our approach was the most cost-effective due to buying filament and materials from a website that sells it for cheap and requires filament only needed for structure.
What steps did your team take to remain as cost-effective as possible?
We ensured that our materials were as cost-effective as possible, and we made sure that the materials we constructed were made out of cost-effective materials as well
Notebook References
Mecca
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