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Jonathan Ansumana
Welcome to Jonathan's Page!

This OSAT has been designed but not yet tested - use at own risk.
This OSAT has been modeled.


User page stuff[edit]

Include in your usepage

  • brief professional bio
  • reflective paragraph on your participation in the Open Source movement:
  The open source movement is a great way to share free software around the world. The open source movement allows people to collaborate on project, get major feedback, and help solve problems for a price of $0!
  - what attracts you to it (or distances you from it)

I am attracted to the movement because it is a source of free software. I really like the fact that there is a lot of transparency in the open source movement. Code that I submit today can be used tomorrow to solve a different problem in another corner of the world. The most attractive thing about the open source movement is the ability to personalize open source code to fit your current demands.

  - how your Jellybox build experience was participation in the Open Source movement

The Jelly box build experience was an essential part of the Open Source movement and the rep rap project. A good amount of the parts used to build my printer were 3D Printed. After building the printer, I will be using a lot of open source code to print desired objects. I will also be publishing and modifying G-Code and sharing it for others to use.

  - where you might go with it in the future

In the future, I see my self designing and printing sandals that I can use on the beach. This could also be useful in third world countries for those who don't have shoes.

  • [[category:242-2018 People]]
  • eventually galleries of your work from the class


{{Gallery |width=180 |height=135 |title=paddle |lines=4 |Image:IMG 1414.jpeg| 3DBean

Picture Stuff Describe something else
Hotend.JPG Stuff in length More stuff
IMG 1459.jpeg Keltic Vase
IMG 1533.jpeg Test Tube Holder

Hotend.JPG This page is part of a Principia course ENGR242: 3-D Printing Technology

Please leave comments using the discussion tab. The course runs in the Spring semester. It is not open edit.

Hand Powered Washing Machine[edit]

Project developed by [1]

This OSAT has been designed but not yet tested - use at own risk.
This OSAT has been prototyped.

You can help Appropedia by contributing to the next step in this OSAT's status-design.


This is a Hand Powered Washing Machine. The purpose of this project is to make it easier to wash clothing. Washing clothes by hand can be strenuous, and the soap water may soak your hands. With this device, one can rotate the device 3/4 clock and counter clockwise for about 20-30 minutes and their laundry will be clean.


Bill of Materials[edit]

Basic Components:

  1. Bar 1 (1x)
  2. Bar 2 (1x)
  3. Bar 3 (2x)
  4. Bar 4 (1x)
  5. Bar 5 (1x)
  6. Bottom Ball (1x)
  7. Flipper (3x)
  8. Wheel (1x)

Tools needed for fabrication of the OSAT[edit]

  1. Jellybox or similar RepRap 3-D printer
  2. Hammer
  3. PLA Filament

Technical Specifications and Assembly Instructions[edit]

  1. Provide directions for print/assembly - be detailed enough in your “how to” to ensure that someone could construct the device from your description. Consider the elegance of IKEA like instructions.
  2. Include print time estimate

Instructions: If you are using a jelly box printer, print everything at 46% scale in Cura



Step 1: Print the Wheel (5hrs)

Step 2: Print Bar 1 (20 Min)

Step 3: Print Bar 2 (20 Min)

Step 4: Print 2 Bar 3'S (40 Min)

Step 5: Print Bar 4 (30 Min)

Step 6: Print Bar 5 (20 Min)

Step 7: Use a hammer to join Bar 1, 2, 3 together.


Step 8: Join bar three with the first Bar 3, but with the hole facing the opposite direction of Bar 1.

IMG 1555.jpeg

Step 9: Use a hammer to join Bar 4 with Bar 3.

Step 10: Use a hammer to join Bar 5 to the bottom of Bar 4.

Step 11: Print the Bottom Ball.

Step 12: Attach Bar 5 to the Bottom Ball.

Step 13: Print the Flippers.

Step 14: Attach the Flippers to Bar 5 and Bar 4.

Step 15: Attach Bar 1 to the Wheel.

It takes at most 30 minutes to Assemble.

Example video summary of textbook

Common Problems and Solutions[edit]

  • Include common mistakes/problems to avoid in building your OSAT and how to overcome them


jellybox print


Oshw-logo.png This user is a member with interest and knowledge of Open Source Hardware.
Reprap.png This user is a member with an interest and knowledge of 3-D printing.