A hand-cranked washing machine any village mechanic can fix (interview)

In low-income, remote and displaced communities, manual laundry consumes up to 20 hours a week, and a normal washing machine is useless without power, piped water and a service network.

Divya, a hand-cranked washer needing no electricity or plumbing, using about half the water of handwashing, and repairable with local tools.

A hand-cranked appliance co-designed with its users: a wider lid for heavy wet fabrics like blankets, an integrated scrub surface for cuffs and collars, a larger replaceable drain tap built on a commonly available fitting, and stronger wheels. Deployment runs through organisations already embedded in the communities, who handle placement, training, maintenance and follow-up.

Hundreds of machines deployed and more than 105,000 lives reached since the 2018 design (self-reported in the interview); local manufacture in India is being validated, with an intended capacity of up to 10,000 units a year — explicitly not yet operating output.

In an interview with The Manufacturing Frontier published October 8, 2026, Nav Sawhney, founder of The Washing Machine Project, describes the Divya, a hand-cranked washing machine for communities without electricity or piped water. He says the design started in 2018 and that deployed machines have so far impacted more than 105,000 lives across the globe — a figure the project itself reports, not an audited count.

Sawhney describes the engineering choices in the interview. Divya is deliberately disassemblable and repairable with locally available skills, tools and off-the-shelf parts: the drain tap, for example, uses a commonly available fitting so any local mechanic can replace it.

The clearest mechanical revisions came from the machine's primary operators, women and girls, through co-creation conversations in India — a wider lid opening after users struggled with blankets and heavy wet fabrics, an integrated scrub surface for stubborn marks, a larger drain tap that cuts drain time, and stronger wheels because machines were moved and shared more than expected. He calls these user-led design changes and declines to claim a formal biometric study.

Sawhney is equally blunt about limits. The machine can use about half the water of handwashing, but that is a comparison against a handwashing baseline, not a universal saving; it cannot solve water fetching or greywater disposal, and dense settlements still need locally appropriate drainage agreed with site partners. On manufacturing, he says the team is preparing and validating local production in India and that the 10,000-units-a-year figure is intended capacity, not current output; quality protocols must emerge from real-world testing rather than boardroom optimism.

The constraint set is extreme and specific: no power, no plumbing, no service network, and users who carry the water themselves.

Repairability is treated as a design feature, not an afterthought — proprietary parts are named outright as a failure mode for refugee settlements and villages.

The founder refuses to inflate claims, separating intended capacity from actual output and user-led changes from lab ergonomics, which makes the numbers that are given more credible.

Design for the village repairman, not the service network: a machine that cannot be fixed with local tools and off-the-shelf parts will end up abandoned, however elegant it is.

The Washing Machine Project is validating an Indian supply chain and manufacturing footprint, with a planned capacity of up to 10,000 units a year once proven, and continues to work through implementation partners for placement, training and maintenance. Freight cost, spares and inventory across geographies remain open challenges, per the interview. The published product information still describes water use as about half of handwashing, against a handwashing baseline.