242 Big Money Project

The RepRap motto is "wealth without money" - for this assignment you are to create wealth by making an open source design that has value to you. It must be 3D printable on your Jellybox and cost less than a commercial equivalent (if such a thing exists).

Assignment[edit | edit source]

1. Design something of "high value" that you can 3D print on your Jellybox
2. Make sure someone else has not already done it - search http://www.yeggi.com/ and http://web.archive.org/web/20191229012720/http://www.yobi3d.com/
3. Design 3D printable components with ANY CAD program but the use of OS CAD programs (e.g. OpenSCAD, FreeCAD, or Blender) earns extra credit points
4. Create an account at http://libre3d.com/ or http://thingiverse.com/
5. Upload your design under an OS license to http://libre3d.com/ or http://thingiverse.com/ - include: Source files, STLs, a picture, and a brief description including costs and $ savings (make sure you make the duration forever) If not using SCAD or Blender - upload your CAD model in a zip file.
6. Add picture, link to your Libre3d or Thingiverse page with name, commercial equivalent link+cost, and economic savings to table below (see example).
7. Print component and bring to class - Complete and due by last day of classes this semester

Grading[edit | edit source]

• 30% Print quality
• 20% Documentation
• 50% Design (design for printing, aesthetics and function)

Automatic reductions:

• 50% no source
• 10% per day for late

Table of Value[edit | edit source]

2023[edit | edit source]

Digital Photo	Free Design / Link to Libre3D	Commercial Equivalent / Cost	Approximate Savings in US$
Kesiena Berezi	Bracelet Stand	$35.40	Costs less than $0.06 worth of PLA and could retail for around $20.
Brad Mulwenge	Cup Coaster	$10.00	Costs less than $0.50 worth of PLA and could retail for around $3.
Ryandamico	Homerun Ball Stand	$14.99	Costs around $0.37 each. Sold 13 for $5 each, profiting $62. Market price: $15–$20.
Juliet Mirambo	Chocolate Extruder	$179 for a commercial extruder. Printable extruder part (excluding syringe): $3 retail. Filament cost: $1, yielding a $2 profit.

2019[edit | edit source]

Digital Photo	Free Design / Link to Libre3D	Commercial Equivalent / Cost	Approximate Savings in US$
Rachael Ostheim	Phone Holder	Cost: approximately $3 to make; retail value: $10–$15 depending on availability	$7–$12
	Chapel Ornament	$12.95	Cost of ornament: $0.40; savings of at least 96%
Sammy Keller	Gauge Holder	$28.70	Roughly 86% savings
	Customized Checker Board and Checkers	$12.25	Cost for PLA: $1.85; 85% savings
	Customized Photo Holder	$10.00	50% savings
	Principia Coaster	$0.75 each for 16 coasters	Cost: $0.46; 38% savings
	Lightning Charger Cord Name Tag	$28.99 for 1 3D Printed Name Tag	Cost to manufacture: $0.09; 99.67% savings
	Over Door Hook Rack	Commercial equivalent: $10–$25 [1]	Cost to manufacture: $1.50; roughly 10%–20% savings

2018[edit | edit source]

Digital Photo	Free Design / Link to Libre3D	Commercial Equivalent / Cost	Approximate Savings in US$
	Xbox One Controller Stand	$11.25 (average cost)	Savings: ~$8.25
	Desktop Drawer for 5.25 inch Drive Bay	$20.00	Savings: ~$18.00
	Hidden Outlet Wall Safe	Cost: $5–$20 (average: ~$10)	Savings: ~$10.00
	Sharpie Marker Holder	Marker Holders, $15–$20	Savings: ~$17.00
	Bed Riser	$5–$22	Savings: ~$15.00
	MX Cherry OEM Profile Keycaps Library (OpenSCAD)	Commercial cost: $20–$40 (full set)	Printing cost for 104 keys: ~$5.20 (75% savings)

2017[edit | edit source]

Digital Photo	Free Design / Link to Libre3D	Commercial Equivalent / Cost	Approximate Savings in US$
	Multi-Hanger Closet Organizer	$9.00	Savings: ~$8.50
	Acoustic Phone Holder	$50.00	Savings: ~$45.00
	iPad Pro and Apple Pencil Stand	$29.99	Savings: ~$27.00
	Flower Watering System	$15.90	Savings: ~$14.00
	Hair Tie Bracelet	$10.99	Savings: ~$10.87
	Elf Ear Jewelry	$30–$40	Savings: ~$38.00

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