RPI Sunglasses Albert Lo Christopher Quinones -Troy High School

RPI Sunglasses
Albert Lo
-Troy High School
Christopher Quinones
-Troy High School
Our Design
A Bright Idea
 Supports RPI
 Tasteful fashion accessory
 Helps shield eyes while still a fun item
 Involves a variety of processes
Parts
 Frames (front and back)
 Sides (x2)
 Lenses (x2)
 Screws, nuts, and washers (x2)
Frames
 Polycarbonate injection molding
The two halves are ultra-sonic welded together to
enclose and secure the lens.
Sides
 ABS injection molding
 CNC machining
 Laser etching
Lenses
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Purchased
“Solar” gray color sheet
Laser cut
Acrylic
Lenses
Screws, Nuts, and Washers
 Purchased
 Fastens the assembly together
Assembly
 Attaching the front frame and side frames
Fastening the Assembly
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•
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Height of screw: 5mm
Height of side frame: 3.25mm
Height of hex nut: 1.6
0.15mm extra
Processes Involved
 Plastic injection molding
 Frames and sides
 CNC machining
 Bore holes in the frames and sides
 Ultra sonic welding
 Connects the two frames together
 Laser Cutting
 Engrave details
 Cut lenses
Materials Cost
Item
Unit price
Total Unit Cost
Source
Screw
$.03
$25.00
Boltdepot.com
Nut
$.02
$14.00
Boltdepot.com
Washer
$.01
$9.00
Boltdepot.com
Lens plastic
$.05/in2
$135.00
Tapplastics.com
$183.00
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TOTAL---------------
• With an approximation of $200 to produce 400 pairs of glasses, this design is
well under the $3000 budget
• It costs $0.50 to manufacture one pair of sunglasses
For screws, washers, and nuts: http://www.boltdepot.com/Product-Details.aspx?product=6844
For plastic sheets: http://www.tapplastics.com/product/plastics/cut_to_size_plastic/acrylic_sheets_transparent_colors/519
Questions?