Group C Anton Grgas Vlade Grgas Zane Harrisgleason Charles Chheng Baek Kyu Choi Nhat Tam Nguyen

 Gem cutting ◦ A process involving the creation of small planes (facets) onto a rough gemstone  Facets are created by setting a height, angle, and index number  A single Stone can have anywhere from facets  Each facet is cut a minimum of 3 times (Roughing, Pre- polishing, and Polishing) ◦ Time to cut each stone is dependent on size, number of facets, and level of polish desired

 High Barriers to entry into the trade due to machinery costs ◦ Price ranges from $ ◦ Disadvantages of low level machines  Low Accuracy  Requires frequent adjustments per stone  Low life-cycle’s  Expensive maintenance  Goal of Project ◦ Increase machine capability while reducing costs ◦ Increase machine life-time and reduce cost of maintenance ◦ Make faceting fun and easy to learn VS.

 Performed Research  Created Requirements List  Developed a function Structure  Developed classification scheme  Created variant designs  Ranked designs  Chose variant to design

 Market Research ◦ Looked into potential customer bases  Commercial Mass Market  Small Quantity Custom Cutting ◦ Analyzed market uses for each type of stone  Low end jewelry –mass market stones  High end jewelry- Custom cut Stones  Gem Cutting Processes ◦ Current and historic methods  Commercial cutting strategy  Custom cutting strategy  Product Research ◦ Looked at all current Machines  Capability at each price point

 Graves MK IV $1200 ◦ Plastic/Aluminum Construction ◦ Brushed DC Motor ◦ Non-repeatable Height Setting ◦ +/- 0.1 Degrees Accuracy ◦ No soft-Stop indicators for user  Group C Machine $1000 ◦ 1018 Packerized Steel ◦ 1/3HP Single Phase Induction Motor ◦ Repeatable Height Setting +/-0.001in ◦ +/-0.01 Degree Accuracy ◦ Multiple soft-stops to increase user awareness

 Geometry  Must be free-standing on a tabletop (12”X18”X5”)   Energy  110 Volt AC Electricity  Manual Power   Material  Corrosion Resistant  Must be wildly available and easily acquired  Above average wear resistance  Above average resistance to flexing  Safety  Prevent operator from inhaling any dust produced from cutting  Prevent operator from injuring self on machine

 Production  Cost of materials not to exceed $500  Must be able to be quickly fabricated, assembled and calibrated  Operation  Be simple enough so that anyone 8-80 can easily use the machine regardless of mechanical aptitude  Maintenance  Very long maintenance intervals  Maintenance must be simple enough that an operator with minimal machine tool experience can conduct all required repairs/calibration without outside help.   Cost  Market Target price from $1000-$1500

 Machine has 4 Components ◦ 1. Lapidary Machine  Box, Motor, Lap, Coolant Tank ◦ 2. Support Shaft/Base ◦ 3. Faceting Head Body ◦ 4. Gem Arm  Member assignments ◦ 1. Anton ◦ 2. Zane/Charles ◦ 3. Vlade ◦ 4. Tam + Baek