1. Eric Hettler - ME William Gallagher - ISE Christopher Mieney - ME Gregory Ryan - ME Joseph Cole - EE

2. Project Summary Create a 3D printer that can print a part in multiple colors Use Fab@Home architecture fabathome.org

3. Customer Needs and Specifications Customer NeedSpecsCommentImportanceMetric Safety Contain the UV radiation High80% absorption at 350nm No physical damage to users Scrapes, pinching, sharp edges Low No sharp edges or openings of more than 1cm^2 Multicolor/ Material Multicolor High3 printheads that dispense color Multimaterial High100cP<viscosity<300cP Repeatability Layer-Layer Med Thickness of each layer will not vary by more than 5% Part-Part MedParts will stay within 5% of nominal value Accuracy Position Variability Printhead can retrieve location Med.001 inch tolerance Color Variability MedReflective index Low CostAffordable High< $3,000 Speed Printing Speed Medm^3/hr Curing Time Highsec/cm^2 Setup Time Low< 30 mins Aethetics Machine outward appearance MedSurvey of random people Operation MedSurvey of random people Graphical User Interface LowSurvey of random people Ease of Use Graphical User Interface LowSurvey of Operators/ Minimal Training User manual MedSurvey of Operators/ Minimal Training

4. Risk Assessment Description of RiskPossible Consequences Probability of Risk (H/M/L) Severity of Risk (H/M/L) Overall Risk (H/M/L) Contingency Plan Team Member becomes temporarily indisposed of Loss of time, work needs to be recovered HMM Have more than one team member working on each aspect of the project Team members lack the required skillset Poor work quality, missed deadlines LHM Ensure teams are balanced during week 1, outsourcing Team Member gone indefinitely Loss of time, work needs to be recovered, loss of knowledge LML Have more than one team member working on each aspect of the project Chosen component does not meet specification Costs would increase, loss of time MMM Purchase component from different vendor Kit doesn't come in on time Lack of understanding and knowledge to design to MLL Order kit earlier, consult Fab@Home website Team member does not deliver promised progress Loss of time, work needs to be recovered MMMAssign multiple members to tasks Do not have proper facilities to fabricate/test Loss of time, increase of cost LHM Create design to match facility capabilities, Outsource to a different facility

5. Work Breakdown Structure On Edge Microsoft Project format

6. Outline of Systems Hardware Curing/Lighting Material delivery Color delivery Print head protection Actuation Software Material control Color control Motion control

7. Preliminary Research Materials – Chris Curing – Greg Sensors - Joe

8. Questions?