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I’ve built a small handheld paper-scrolling device, and the core mechanism works—but it still feels like a rough prototype, not something a factory can produce reliably. I need a mechanical designer to refine the internal drive system (gears, shafts, guides) so it’s clean, repeatable, and ready for scalable manufacturing. **What I need:** • Re-engineer the gear and shaft system so parts can be easily molded or machined without complex secondary operations. • Define tolerances, draft angles, fasteners, and a simple assembly sequence. • Deliver updated CAD (STEP), 2D drawings with basic GD&T, and a small BOM. • Provide one functional prototype set in composite or similar material that fits into my existing housing. **Success looks like:** The scroll mechanism advances smoothly for 500+ cycles with no binding, and every part matches the approved drawings. SolidWorks or Fusion 360 preferred, but any CAD that exports clean STEP files is fine. If you’ve turned early-stage concepts into manufacturing-ready mechanisms before, I’d love to work with you.
Project ID: 40174952
11 proposals
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Active 3 mos ago
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11 freelancers are bidding on average ₹19,727 INR for this job

Hi there ! As an 8-year veteran in the mechanical and product design field, I have honed my expertise in transforming early-stage concepts into manufacturing-ready mechanisms, which perfectly aligns with your project's goals. Proficient in CAD/CAM tools like SolidWorks and Fusion 360, I assure you of my ability to redefine the paper-scrolling device's drive system for easy moldability or machining without complex secondary operations. With your design preferences in mind, I will ensure that updated CAD files, 2D drawings with appropriate GD&T, and a small BOM are all delivered timely. Drawing from my extensive knowledge of printing, prototyping, visualization, and manufacturing (particularly with injection molding and CNC laser cutting), I am not just a capable designer but also an effective problem solver. By defining tolerances, draft angles, fasteners, and a simple assembly sequence for your handheld device In collaborating on this project, you'll benefit from a detail-oriented freelancer who understands the importance of impeccable precision and critical thinking—an adeptness integral to producing a polished final product where every part matches approved drawings perfectly. Choose me as your mechanical designer; together, we'll optimize your rough paper-scroller prototype further into something easily scalable and ready for market production.
₹15,000 INR in 7 days
6.8
6.8

Hi, I’m a multidisciplinary engineer focused on design + analysis, delivering production ready CAD and simulation-backed solutions. I work across mechanical and architectural scopes, with clear drawings, practical detailing, and fast communication. Feel free to check my profile for similar projects ,happy to review your scope and suggest the best next steps. G. Zaralı
₹20,000 INR in 7 days
6.0
6.0

With my wealth of experience in mechanical engineering and 3D design, I believe I am the perfect fit for your handheld paper scroller mechanism optimization project. As an expert in 3D modeling software including SolidWorks, Fusion 360, and AutoCAD - exactly the skill set you need to enhance your device - I am confident that I can successfully deliver a refined internal drive system for mass manufacturing with ease. Most importantly, I promise you timely delivery of updated CAD designs along with 2D drawings integrated with basic GD&T and a well-curated Bill Of Materials to aid your manufacturing process. In addition, you'll receive a functional prototype set made from composite materials or any others you are comfortable with that fits seamlessly into your existing housing. Let's bring your rough prototype to life, simplify fabrication and optimize for high-quality scalable production.
₹17,000 INR in 2 days
4.2
4.2

Hello, I can refine your mechanism into a clean, manufacturing-ready design with simplified gears and shafts, defined tolerances, and a clear assembly process. I’ll deliver STEP files, 2D drawings with basic GD&T, and a BOM, and support a functional prototype that fits your housing and runs smoothly for 500+ cycles. Best regards, Mayank
₹20,000 INR in 7 days
2.9
2.9

Thank you for visiting my profile. I'm a skilled Mechanical Designer with years of experience in using SolidWorks for creating detailed 3D models, assemblies, and technical drawings. I specialize in transforming conceptual designs into manufacturable products across various industries, including consumer electronics, and industrial equipment. My expertise includes designing complex components, optimizing designs for the performance. Let's talk about your idea and we can bring it to life.
₹20,000 INR in 7 days
2.4
2.4

Hi, I can take your working prototype mechanism and convert it into a factory-ready internal drive system. I’ll redesign the gears/shafts/guides for moldability and easy assembly, then deliver STEP + 2D GD&T drawings + BOM, along with a prototype-ready set that fits your current housing. I’ll also define tolerances/draft/fasteners and an assembly sequence so it runs 500+ cycles smoothly with no binding. Share the housing CAD + current mechanism files, and I’ll start with a DFM + tolerance review first.
₹20,000 INR in 7 days
0.5
0.5

With more than a decade of experience as a mechanical and product designer, I am confident that I can tackle the challenges your project presents. Efficiency and manufacturability have always been cornerstones of my work, leading to award-winning designs and streamlined processes for complex projects. My extensive knowledge and usage of AutoCAD, SolidWorks, Photoshop and Coreldraw allows me to provide incredibly detailed design outputs that meet industry standards, something vital for the success of your scrolling device. I understand your need for a scroll mechanism that can be easily produced on a large scale without hitches. This is where my specialization in material optimization and practical manufacturability is sure to prove valuable. I will ensure the gear and shaft system in your device are refined to guarantee smooth operation even after 500+ cycles. The success of this project hinges on delivering parts that perfectly fit with approved CAD drawings. My meticulous attention to detail ensures nothing is left to chance: all tolerances, draft angles, fasteners, and assembly sequences will be defined precisely on updated CAD files (STEP) and 2D drawings with basic GD&T. Furthermore, I am able to create functional prototypes from composite materials like you require. Choose me for this project and watch as your prototype turns into a manufactured, professional-grade product you can showcase proudly
₹25,000 INR in 5 days
0.0
0.0

Hello, I am a licensed Mechanical Engineer specializing in mechanism design and compact mechanical assemblies. This project requires more than basic CAD. A handheld paper scroller must operate smoothly, apply controlled friction, avoid jamming, and be simple to manufacture and assemble. My focus is on functional, reliable mechanism design, not trial-and-error modeling. My approach: Understand the functional requirement (scrolling force, direction, paper behavior) Design a robust mechanical solution (rollers, shafts, gears/springs if needed) Ensure smooth motion and consistent paper tension Apply DFM/DFA principles to minimize parts and simplify assembly Define practical tolerances for real-world operation Deliverables: 1. Complete 3D assembly in STEP format 2. Individual STEP files for all parts 3. Assembly structure suitable for prototyping or manufacturing 4. Short design explanation describing how the mechanism works Why I’m a strong fit: 1. Engineering-driven design mindset 2. Experience with mechanisms, motion systems, and compact devices 3. Focus on usability, reliability, and manufacturability 4. Clear communication and structured delivery If you have sketches, references, or size constraints, I’ll integrate them. If not, I can propose a concept mechanism and refine it with you. Happy to discuss details before starting. Best regards, Mojtaba Al-Hassani Mechanical Engineer | Mechanism Design
₹20,000 INR in 7 days
0.0
0.0

Bangalore, India
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