Albert Lo -Troy High School

RPI Sunglasses

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 • • • • 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 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

Screw Nut Washer Lens plastic TOTAL---------------

Unit price

$.03

$.02

$.01

$.05/in 2

Total Unit Cost

$25.00

$14.00

$9.00

$135.00

$183.00

Source

Boltdepot.com

Boltdepot.com

Boltdepot.com

Tapplastics.com

----------------------- • • 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?