# Bokaro Electrician Invents Sand-Sieving Machine Using Local Jugaad > An electrician in Bokaro has spent five months building a low-cost sand-sieving machine that can filter a tractor-load of sand in just one hour. **Type:** article · **Category:** Jharkhand · **Published:** 2026-11-14 · **Source:** TrendKia **Canonical:** https://trendkia.com/en/jharkhand/bokaro-ke-electrician-ka-kamala-desi-jugara-se-banai-balu-chhanane-ki-mashina-59755 · **Language:** English **Tags:** Bokaro, Electrician, Local Jugaad, Sand Sieving Machine, Shyamlal Mahto, Innovation A local electrician in Bokaro has demonstrated remarkable ingenuity by designing and building a specialized machine that revolutionizes how construction sand is sieved. Shyamlal Mahto, whose primary profession involves repairing electric motors, ceiling fans, and various household appliances, has always harbored a deep passion for technical experimentation. Having closely observed the grueling physical labor and extensive time consumed by traditional manual sand-sieving methods at construction sites, he felt compelled to find a mechanical solution. Driven by this persistent problem, he dedicated nearly five months of sustained effort to conceptualize and fabricate a device that could simplify the entire process. ## Low Cost Construction and Power Specifications According to Shyamlal, bringing this innovative machine to life required an economical expenditure of roughly 5,500 rupees. The equipment operates entirely on electricity and is powered by a 2.5-horsepower motor. The internal mechanism combines this robust motor with a specially fitted mesh to efficiently separate fine sand from debris. One of its standout functional attributes is an integrated speed controller, which allows operators to adjust the operational velocity up or down depending on immediate requirements. Additionally, a standard on-off switch has been fitted for safe operation. Shyamlal maintains that even when heavy loads of sand are dumped into the apparatus at once, it processes the material smoothly, successfully sieving an entire tractor load of sand in approximately one hour. Beyond simplifying construction chores, Shyamlal Mahto has turned the invention into a viable commercial asset. He currently generates income from the machine through two distinct operational models. When he personally oversees the filtering process alongside a laborer, he charges around 500 rupees per tractor load. Alternatively, if a customer prefers to operate the machinery independently to sift their own material, a rental fee of 200 rupees is charged. This dual approach has transformed his mechanical creation into a dependable secondary revenue stream that supports his household finances. ## Overcoming Initial Engineering Hurdles The journey from a conceptual idea to a working prototype was fraught with significant engineering obstacles. Shyamlal recalled that during the early testing phases, the machine operated at an excessively high velocity, generating violent vibrations that frequently caused the structure to tilt and topple over. Furthermore, whenever a large volume of sand was loaded simultaneously, the electric motor struggled against the heavy load, causing the entire system to stall. To resolve these operational flaws, he recalibrated the speed parameters and made several crucial structural adjustments to enhance overall load-bearing capacity. Countless rounds of trials and continuous refinements eventually resulted in the stable, efficient machine seen today. ## Prior Innovations and Future Ambitions This sand-sieving device is not Shyamlal Mahto's maiden venture into practical engineering. In the past, he successfully constructed a mini electronic tractor and a functional wind turbine. The wind turbine he installed at his residence remains fully operational to this day. Neighbors and fellow villagers have expressed immense appreciation for his consistent resourcefulness. Looking ahead, Shyamlal is already planning further upgrades to his current design. He explains that the present creation represents his introductory model and he intends to develop two or three advanced variants soon, with long-term aspirations to build a larger scaled version for heavy-duty commercial applications. ## What this means for you This grassroots innovation offers tangible financial and operational benefits for local builders and workers engaged in construction activities. - **In Bokaro:** Local residents and independent contractors no longer need to rely on exhaustive manual labor for filtering construction sand. The mechanical setup significantly cuts down project delays and physical strain. - **Low Production Cost:** The entire apparatus was fabricated for an affordable outlay of about 5,500 rupees, making small-scale mechanical replication highly feasible. - **Affordable Rental Option:** Customers can rent the machinery to operate it themselves for just 200 rupees, providing an economical alternative for budget-conscious builders. - **Additional Income Stream:** The creator earns between 200 and 500 rupees per tractor load depending on whether labor is included, boosting household earnings. - **Enhanced Speed:** The device processes an entire tractor load of sand in approximately one hour, drastically reducing the time required for material preparation. ## Why this happened The creation of this sand-sieving machine was driven by the inefficiency and heavy physical exertion associated with traditional manual sieving methods at construction sites. Shyamlal Mahto's technical background and persistent drive to solve everyday problems motivated the project. - **Inefficiency of Manual Labor:** Traditional manual sieving required extensive human effort, causing severe physical fatigue and slow project turnaround times. - **Technical Background:** As a working electrician experienced in repairing motors and building prior inventions like mini tractors and wind turbines, Shyamlal possessed the necessary foundational skills. - **Desire for Practical Solutions:** Recognizing the clear gap in the local construction process, he invested five months of trial and error to mechanize the filtration procedure. - **Iterative Engineering:** Early mechanical failures such as excessive vibration and motor stalling under heavy sand weight were systematically addressed through speed regulation and structural modifications. ## Questions & Answers ### 1. Who invented the sand-sieving machine? The machine was designed and built by Shyamlal Mahto, an electrician from Bokaro. ### 2. What was the total cost of building the machine? The machine was constructed at an approximate cost of 5,500 rupees. ### 3. How long does it take to sieve a tractor load of sand? The machine can filter an entire tractor load of sand in approximately one hour. ### 4. What is the rental fee if a customer operates it themselves? Customers who operate the machine independently are charged a rental fee of 200 rupees. ### 5. What is the motor capacity used in the equipment? The machine is equipped with a 2.5-horsepower electric motor. ### 6. How long did it take to complete the invention? Shyamlal spent nearly five months of continuous effort to successfully build the machine. ## Inspiration & Lessons Shyamlal Mahto's journey serves as a powerful testament to how grassroots ingenuity and perseverance can overcome everyday challenges without massive capital. - **Resourcefulness Over Capital:** Practical and highly functional machinery can be built on a modest budget of just 5,500 rupees through focused determination. - **Turning Problems into Solutions:** Everyday bottlenecks and exhausting manual tasks can be successfully transformed into mechanical solutions and additional revenue streams. - **Embracing Trial and Error:** Early engineering failures, such as severe vibrations and motor stalls, should be treated as learning curves rather than dead ends. - **Leveraging Professional Skills:** Applying core vocational knowledge to solve local community problems yields meaningful and sustainable outcomes. --- _TrendKia — Har trend, sabse pehle.. 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