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For this assignment, assume that you are in the 3D printer market for your school or business. A granting agency (me) has money for purchasing a 3D printer, but they want to make sure you have done your homework and know exactly what you need and want. Your task is to create a rubric that you will use to evaluate a number of printers (5-10). The list below highlights some of the things to think about when purchasing a 3D printer.
Factors to consider:
- Cost
- Kit or pre-built
- Build Platform type/leveling/material used to adhere material to plate (tape? hairspray?)
- Closed or Open Build Envelope
- Cold or heated build plate
- Internet Connectivity?
- Operating System Requirements
- Material used to print –Generic? Proprietary feed? Color?
- Cost of material used to print
- Ease-of-use/Special tools needed?
- Customer service plan/Cost for service/Turnaround
- Manufacturer Issues
- Build Envelope Dimensions
- Print Resolution
- Print Technology (Stereolithography, Extrusion, Phase Change Inkjet )
Sites with printer information:
http://www.additive3d.com/3dpr_cht.htm
http://www.makershed.com/pages/3d-printer-comparison.
http://www.productchart.com/3d_printers/ (Interactive)
http://www.3ders.org/pricecompare/3dprinters/
http://3d-printers.toptenreviews.com/
You will see charts comparing the printers. Consider using a similar chart to organize the printers you evaluate. Assign point vales for the different categories. The printer with the highest scores should be the one you select, unless you have a compelling reason to pick the 2nd or 3rd highest scoring printer.
Once you have evaluated the printers with your rubric, write up a short justification (275 words) in Word, explaining why you chose the printer you chose, what you will do with it, and how it will improve your classroom or business.
| Write up Rubric (One point for name on paper) | |||
| Item / Value | 0 | 2 | 3 |
| Write Up | Fewer than 275 words | 275+ words | |
| Learning/business need
|
Report lacks information about learning/business need | Report includes reference to learning/business need, but lacks connection from hardware decision to need | Report includes information
about the learning/business need and ties the hardware decision to the need |
| Rubric Results | No discussion or chart is included in report | Chart of rubric results is included but not discussed in write up | Rubric results are shown
in chart and are discussed in write up |
| Rubric Rubric | |||
| Item / Value | 0 | 10 | 20 |
| Rubric | Rubric lacks comparative factors related to the decision | Rubric analyzes hardware on the basis of three or fewer factors, or factors are unrelated to the decision | Rubric analyzes hardware
using a variety of factors (five or more factors- there are 15 in the list) related to the decision |
| # of printers evaluated | One printer evaluated | 2-4 printers evaluated | 5-10 printers evaluated |
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