D E S I G N I N N O V A T O R

S A R A H W O L M A N

Sarah Wolman

My name is Sarah Wolman. I recently graduated from the University of Cambridge with a Master’s in Manufacturing Engineering, and am now looking for the opportunity to join a design team as a Design Engineer.

swolman@hotmail.com +44 7857 352334

sarahwolman.comlinkedin.com/in/sarahwolman

Sarah Wolman

Needle & Syringe Destroyer

Low-cost, locally manufactured device that destroys needles and syringes to combat the spread of diseases in developing countries

I was awarded the Arthur Shercliff Scholarship in my final year at Cambridge to carry out a design project in Nepal.

I decided to develop this product after learning how common the spread of deadly diseases, e.g. HIV, is via needlestick injuries and syringe reuse.

Self-Led Project

Nepal, Apr-May 2018

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ITEM NO. PART QTY.1 Sharps Container 1

2 Chassis Mounted Transformer 1

3 3D Printed Lip 1

4 Spring 1

5 3D Printed Handle 1

6 3D Printed Handle 1

7 Steel Blade 1

8 Fused Inlet 1

9 Acrylic Lid 1

10 Copper Electrode 211 3D Printed Electrode Plate 1

12 M3 Bolt 8

13 M3 Washer 6

14 M3 Nut 11

15 M4 Bolt 7

16 M4 Washer 4

17 M4 Nut 4

Sarah Wolman

Research Prototype & Test

To understand the design requirements, I carried out local site visits, interviews and extensive research into the hazards created by current needle disposal practices in Nepal.

My prototype operated successfully and I have since been approached by several NGOs who would like to work with me to further develop the product.

IdeateThe chosen design makes use of a cheap, readily available plastic container, with all components embedded in a separate lid (manufactured using laser-cut acrylic and 3D printing) that attaches to it.

Sarah Wolman

Slabstic

Machine and process that manufactures slabs/bricks by melting used plastic and mixing it with sand

The original aim of this project was to solve the problem of plastic waste in refugee camps and provide flooring for refugee tents to raise them above standing water.

However, the process could be used in any remote, low-income community to provide income and sustainable building materials.

Design Project

Cambridge, May-Jun 2017

Sarah Wolman

Ideate TestAll designs incorporated a used oil drum (a readily available waste product) as the main body of the machine.

I investigated whether or not to shred the plastic before melting. On testing, shredding proved unnecessary as the plastic melted fast enough without it.

The process was trialled to create flooring slabs. Compression tests confirmed they were as strong as burnt clay bricks.

CAD & ManufactureAfter modelling the chosen designs on Solidworks, I took to the workshop to construct the machine and the moulds using methods such as grinding, drilling and welding.

Top: results from the compression test

Left: the machine used to carry out the compression tests

Sarah Wolman

Slabstic Field Test

Field testing the Slabstic process/machine in a rural Kenyan village

Due to the large interest the Slabstic project attracted from NGOs, I applied for funding to develop it further and was awarded £6,000 from the Winton Programme to field test in Takaungu, Kenya.

I made several improvements to the original design before training local mechanics to construct the machine and the community on how to use it.

The innovation was enthusiastically received and a second machine has already been constructed to increase production rates. Production has started, with the first order from an international school in Kilifi for 2,000 slabs.

Design Project

Kenya, Sep 2018

Sarah Wolman

Nekuda DM

Summer internship at a leading design consultancy in Tel Aviv

I had the opportunity to examine all of Nekuda’s past design projects from conception to distribution, allowing me to create a searchable internal project database by devising specific key terms.

Other tasks included quality assurance of products using Solidworks, calculating material costs of products to be manufactured, creating a visual prototype of a medical device that interprets brain activity following anaesthesia, and benchmarking/market research for a device that generates drinking water directly from air.

Internship

Tel Aviv, Jul-Aug 2017

Above: visual prototype of a medical device that interprets brain activity following anaesthesia

Right: the view from my desk!

Sarah Wolman

Card Shuffler

Design of a device for children that shuffles playing cards

As part of the Product Design module, we were assigned a task to redesign a particular card shuffler to improve its ease of assembly, ergonomics and appeal. My final design reduced the total number of components by 55%, significantly decreasing both assembly time and manufacturing costs.

Product Design Coursework

Cambridge, Dec 2016

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ITEM NO. PART NUMBER MATERIAL MANUFACTURE QTY.

1 Small Gear Rod Stainless Steel Drawn Out, Cut 12 Knobs MDF Lathe 23 Big Gear MDF Laser Cut 14 Big Gear Rod Stainless Steel Drawn Out, Cut 15 Small Gears MDF Laser Cut 36 Small Gear Rods 2 Stainless Steel Drawn Out, Cut 27 Back MDF Laser Cut 18 Tyres Rubber Injection Mould 4

9 Rollers MDF Milled 210 Front/Roller Rods Stainless Steel Drawn Out, Cut 211 Inside (Right) MDF Laser Cut 112 Sides MDF Laser Cut 213 Front MDF Laser Cut 114 Card Holder Sides MDF Laser Cut 215 Card Holder Bottom MDF Laser Cut 116 Door Rod Slots MDF Laser Cut 217 Door MDF Laser Cut 118 Door Rod Stainless Steel Drawn Out, Cut 119 Inside (Left) MDF Laser Cut 120 Card Platforms MDF Laser Cut 221 Bottom MDF Laser Cut 1

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NAME: CD48 DATE: 6/2/17

DO NOT SCALE DRAWING REVISION

TITLE: Card Shuffler Assembly Drawing

SCALE:1:10 SHEET 1 OF 1

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Sarah Wolman

Robot Challenge

Design and construction of a multi-functional robot

We were tasked with building a robot that could pick up six eggs; identify if they were coloured, rubber or golden; crack open the egg; and drop the contents (egg white or chick) to the right location.

My team used white LEDs and a Light Dependent Resistor to detect how much light passed through the eggs in order to identify the egg type, as well as to detect whether the eggs contained egg whites or chicks. The robot could then be routed to the correct location.

Our method of picking up eggs proved more successful than other teams’ due to its simplicity, behaving like a litter pickup tool.

Integrated Design Project

Cambridge, Mar 2016

Above: the PCB we designed for our robot

swolman@hotmail.com +44 7857 352334

sarahwolman.comlinkedin.com/in/sarahwolman