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The concept is already sketched and hand-mocked: a palm-hugging silicone shell with shallow finger ridges that compresses through two stages—first a gentle preload, then a deeper “crack” that mimics knuckle popping. What I need now is a production-ready design that preserves that comfortable in-palm feel while reliably producing the audible snap and repeatable tactile release that make the toy addictive. Scope of work • Translate the rough geometry into full 3D CAD (SolidWorks, Fusion 360 or comparable) with accurate wall thickness, venting and gate positions suited for liquid-silicone molding. • Engineer the two-stage dome so that Stage 1 offers smooth resistance and Stage 2 emits a crisp, repeatable crack; material durometer, internal voids and membrane thickness all need tuning. • Validate the acoustic profile in simulation or bench testing—I want the sound of cracking to be unmistakable without amplifying unwanted squeaks. • Provide a DFM package: mold split lines, draft angles, and a suggested tool steel and surface finish that balance part release with durability. • Ship one functional prototype (own shop, service bureau or RTV mold acceptable) for real-world squeeze testing. Acceptance criteria 1. Fits comfortably in an average adult palm without hard pressure points. 2. Produces a clear “crack” ≥ 60 dB at 10 cm distance in a quiet room. 3. Maintains at least 5,000 squeeze cycles with no audible degradation or tearing. I will supply existing sketches, rough dimensions and notes on shore hardness ranges already explored. The project wraps when the CAD, DFM files and a working prototype prove the comfort-focused ergonomic shape, the tactile feedback I’m chasing, and—above all—the signature cracking sound.
Project ID: 40209559
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38 freelancers are bidding on average €92 EUR for this job

Hello there, I am thrilled to delve into the fascinating world of the Silicone Knuckle-Crack Fidget Prototype you've envisioned. With my expertise in 3D CAD, SolidWorks, and product design, I am confident in translating the rough geometry into a production-ready design that retains the comfortable in-palm feel while delivering the addictive audible snap. By engineering the two-stage dome to provide smooth resistance and a crisp, repeatable crack, I aim to meet your satisfaction criteria efficiently. I will ensure the prototype's acoustic profile resonates at 60 dB and accommodates at least 5,000 squeeze cycles seamlessly. Let's collaborate to bring your tactile dream to life. What are your thoughts on proceeding with the next steps? How do you envision the final tactile experience for users of the fidget prototype?
€30 EUR in 2 days
8.0
8.0

Hey mate, I seen requirement to 'Silicone Knuckle-Crack Fidget Prototype' that you searching Have an experience to create & develop. I'm using many software's like - Blender, solid work, 3d plan, Analysis, Rhino, Fusion 360, ZB-rush, Cad, Interior & exterior 3D model with walkthrough etc. I will share First Update within 7-8hrs. WILL SHOW YOU SOME PAST OF WORK Portfolio link - https://www.freelancer.com/u/manusharma2992 Sincerely Manu R.
€80 EUR in 1 day
7.5
7.5

Hello; We reviewed your project summary. We have excellent ideas for your project and we are very experienced in these projects. We are an architectural company made up of professional architects. We can complete your project in quality above your expectations. You can view our project examples from our profile. https://www.tr.freelancer.com/u/smparchitects?w=f Please contact us to talk about the details of your Silicone Knuckle-Crack Fidget Prototype project. Best regards SMP ARCHITECTURE DESIGN & MODELING COMPANY
€80 EUR in 2 days
7.1
7.1

HI 25 years’ experience | Solution: I will design your silicone knuckle crack fidget prototype with ergonomic form, smooth features, and 3D-print/CAD-ready geometry that functions reliably and prints cleanly. ✅ Solution: Clean, manufacturable 3D CAD model optimized for silicone casting or printing with correct dimensions and export formats tailored to your workflow. Questions: 1️⃣ Do you have reference sketches or ergonomic dimensions? 2️⃣ Any specific functional features (texture, flexibility) to include? 3️⃣ Preferred output formats (STEP, STL, IGES)? We will work as per Freelancer.com’s terms and policies. Warm regards, The Blend Nation
€33 EUR in 1 day
7.6
7.6

Hi there ! With extensive knowledge in CAD/CAM, 3D Design and Modelling, and Product Design, I can bring your Silicone Knuckle-Crack Fidget Prototype to life. Having worked on various projects that required high precision and durability, your satisfaction will be paramount. My expertise with tools like SolidWorks, Fusion 360, and other software packages would ensure the production-ready design you're seeking. Having successfully engineered numerous products with specific sound requirements, I am confident in my ability to create a two-stage dome that provides the gentle preload and subsequent "crack" you're after. My previous work includes designing products that needed superior acoustic profiles while avoiding unwanted noises. I will skillfully employ both simulation techniques and bench-testing to ensure a minimum noise emission of 60db at 10cm in a quiet room. Lastly, as a detail-oriented individual and critical thinker with over 8 years of experience in mechanical and product design, I am confident in my ability to utilize my skills to not only provide you with a functional prototype but also validate its performance with real-world usage. Hiring me would mean having someone dedicated to delivering quality work while ensuring all technical aspects such as wall thickness, venting positions, gate positions etc., are carefully considered. Let's get started on this exciting project together!
€80 EUR in 2 days
6.8
6.8

With my extensive background in 3D design and modelling, particularly using SolidWorks, I am confident in my ability to bring your imaginative knuckle-crack fidget toy to life. Over the course of my eight-year career, I have successfully converted numerous rough concepts into detailed CAD files for production-ready designs. Not only am I well-versed in the software and techniques necessary to create accurate wall thicknesses and appropriate venting for liquid-silicone molding, but I also understand the key components required for a true "crack" sound such as material durometer, voids, membrane thickness, and ventilation. In addition to these technical proficiencies, my commitment to delivering above-standard work is unwavering—I offer unlimited revisions until you are completely satisfied and believe in always meeting or beating agreed-upon project deadlines. My excellent communication skills combined with round-the-clock availability ensures a streamlined collaboration process no matter where you are located. Together we can create something amazing that's not only comfortable and interactive to use but also showcases that signature 'crack' sound you're chasing. Let's discuss your project in detail so that we can begin transforming your abstractions into reality!
€152 EUR in 2 days
6.5
6.5

Greetings! Leading an American Licensed Engineers team specialized in product design and engineering, we are well-positioned to transform your Silicone Knuckle-Crack Fidget concept into a captivating reality. Our expertise in SolidWorks and Fusion 360 enables us to meticulously craft a production-ready design preserving the comfort and addictive tactile experience of your toy. Using state-of-the-art CAD tools, we will engineer the two-stage dome for the perfect resistance and crisp crack, ensuring an unmistakable sound profile without unwanted squeaks. Our validated DFM package will balance part release and durability for seamless production. We commit to delivering a functional prototype for rigorous real-world squeeze testing, meeting all acceptance criteria. Let's turn your vision into a tangible sensation that delights users. What's your preferred timeline for this transformation?
€30 EUR in 2 days
5.9
5.9

As an experienced designer and engineer, I am confident that I possess the skills necessary to transform your sketches and notes into a innovative, functional, and durable prototype. My expertise in 3D CAD design using SolidWorks and Fusion 360 will be highly advantageous during the molding process to attain the desired wall thickness, venting, and gate positions. I understand how crucial it is for the two-stage dome to offer a smooth resistance in stage 1 and emit a repeatable, crisp crack in stage 2, and this is an area where my meticulousness and precision shines. Another key element for your project is achieving the specific acoustic profile that produces a clear "crack" sound - something that helps make your fidget toy unique and addictive. My proficiency in conducting simulation tests will play a vital role in ensuring the unmistakability of the cracking sound without any unwanted squeaks. Additionally, my knowledge of Design for Manufacturability (DFM) will help streamline the production process by providing effective mold split lines, draft angles, and suggesting appropriate tool steel and surface finish - balancing part release with durability.
€35 EUR in 1 day
6.0
6.0

I can help you design a silicone knuckle-crack fidget prototype with comfortable ergonomics, controlled flexibility, and satisfying tactile feedback. I will create clean CAD models that consider silicone behavior, moldability, and durability, suitable for prototyping and production development. I am Muhammad Awais Shehzad, with three years of experience in product design and functional 3D CAD modeling. https://www.freelancer.com/u/awaisshehaz
€50 EUR in 1 day
5.8
5.8

Hi there, I am a SolidWorks & Fusion360 expert, product designer and mechanical engineer. I checked your project details carefully and I have a great interest in your project. I am confident that I can bring your specific ideas to life. Here is my service; ✨Creating STL, STEP and X_t files for 3D Printing and Manufacturing. ✨2D technical drawings for manufacturing. ✨Create a DXF and PDF file for CNC/Laser/Plasma cutting. ✨3D modeling/rendering of assembled parts. If you hire me, then your project will be completed more successfully. I am waiting for good news. Best regards Belal
€50 EUR in 1 day
5.7
5.7

Hello Sir, I am experienced in SolidWorks and Fusion 360, and I understand your need for a production-ready design of the Silicone Knuckle-Crack Fidget Prototype. I will meticulously translate the rough geometry into a detailed 3D CAD design optimized for liquid-silicone molding. Engineering the two-stage dome for smooth resistance and a distinct crack sound is my forte. I will ensure the prototype fits comfortably, produces a clear crack, and withstands 5,000 squeeze cycles. Let's move forward to bring your addictive fidget toy to life. Looking forward to your response on how we should proceed with this engaging project. How soon would you like to start the prototyping phase of the project?
€100 EUR in 2 days
5.7
5.7

Hi, I can help you with Silicone Knuckle-Crack Fidget Prototype I’m a Professional Mechanical Design Engineer with hands-on experience in SolidWorks, AutoCAD, CATIA, Autodesk Inventor, and Fusion 360. I focus on accurate, clean modelling and deliverables that are ready for real-world use, not just visuals. I’ll ensure precise geometry, clear communication, and timely delivery. Happy to discuss your requirements and get started right away. Best regards, Sakshi Kashyap
€33 EUR in 3 days
5.2
5.2

Hello, I understand the need for an innovative, ergonomic silicone knuckle-crack fidget prototype. With extensive experience in CAD modeling and prototype engineering, I can translate your concept into production-ready designs ensuring optimal comfort and the signature crack sound. Expect detailed DFM files and a functional prototype. What specific material durometer are you considering? What specific material durometer are you considering?
€33 EUR in 2 days
4.5
4.5

Hello, I am excited about the Silicone Knuckle-Crack Fidget Prototype project. With over 7 years of experience in 3D design and product development, we excel at bringing creative concepts to life. We will meticulously translate your sketches into a production-ready design with precise wall thickness and venting for liquid-silicone molding. Our expertise ensures the two-stage dome will deliver a smooth resistance and a crisp, repeatable crack. Let us create a comfortable, addictive toy that meets all your specifications. When can we start working on this exciting project? How soon would you like to kick off this project?
€100 EUR in 2 days
4.7
4.7

Hi, I'm Juli a 3D design specialist. I've read your job description and I'm confident I can help. I have solid experience with SolidWorks, Fusion 360, AutoCAD, and rendering tools like KeyShot and Twinmotion. I'm committed to precision, fast delivery, and clear communication. Let me know if you'd like to move forward! Best regards, Juli
€50 EUR in 1 day
4.6
4.6

Hi Client, My name is El Shaer, and I specialize in transforming ideas into striking, photorealistic spaces with 15 years of experience behind me. I’ve already completed high-end work in your country, and the results are available in my portfolio. Clients choose me when they want designs that don’t just look good—they feel real. My 3D Rendering, SketchUp modelling, and 3ds Max visualization workflows bring a level of clarity and emotion that helps you see your project before it’s ever built. Take a moment to view my portfolio. Your vision deserves this level of quality. El Shaer
€90 EUR in 3 days
5.1
5.1

Hi jamier24, I am Ismail, a 3D Design expert with over 7 years of experience. I have carefully reviewed your project requirements for the Silicone Knuckle-Crack Fidget Prototype. To achieve the desired outcome, I will accurately translate the rough geometry into a full 3D CAD design, engineer the two-stage dome for optimal cracking sound, validate the acoustic profile, and provide a comprehensive DFM package for production. Two questions for you: 1. Are there any specific color preferences for the silicone shell? 2. Do you have a preferred method for the delivery of the functional prototype? Please feel free to initiate a chat to discuss further details. Regards, Ismail
€37 EUR in 2 days
3.3
3.3

I can take your hand-mocked concept and turn it into a production-ready silicone part that preserves the in-palm comfort while delivering a consistent, satisfying two-stage “crack.” I’ll handle the full transition from rough geometry to manufacturable CAD, focusing on both ergonomics and repeatable tactile / acoustic performance. Here’s how I’d approach it: • Convert your sketches into full 3D CAD (SolidWorks) with correct wall thickness, internal voids, venting, and gate locations for LSR molding • Engineer the two-stage dome so Stage 1 provides smooth preload and Stage 2 produces a crisp, repeatable snap • Optimize internal structure to avoid squeaks while amplifying the desired crack response • Prepare DFM: draft, parting lines, mold strategy, surface finish, and tool steel recommendations • Produce a functional prototype (RTV or service-bureau silicone) for real squeeze testing • Iterate as needed to meet comfort, sound, and durability targets You’ll receive: • Native CAD + STEP • DFM package (drafts, splits, gates, vents) • Prototype part • Basic documentation for molding handoff Design targets will be driven directly by your acceptance criteria: palm comfort, ≥60 dB crack at 10 cm, and 5,000+ cycle durability. I’m ready to review your sketches and Shore hardness notes immediately and can start CAD right away. Once I see your references, I’ll outline timeline and milestones so we can lock in the first prototype quickly.
€30 EUR in 1 day
2.9
2.9

Hi there, I'm Alema Akter. I'm a professional 3D artist/character artist with more than 10 years of experience in the industry. I have worked with various clients such as game developers like Moder Design Enterprise (Qatar), WAIFU HOUSE DAO (NFT Proyect), designers, 3D print enthusiasts and more. I am very passionate of what I do, I love making characters, game assets and sculptures. You can check an example of one of those projects in my portfolio here: https://www.freelancer.com/u/Vsion2 Customer satisfaction is important, that's why you can expect the highest quality models from me. I am very particular in details, quality and speed. I will help you make your ideas come to life with Zbrush, Blender, Photoshop, Substance painter as my tools. I will give you the model, all the maps you need, render and the source files. Your faithfullly. Alema Akter
€30 EUR in 1 day
3.6
3.6

Hi, I’d be happy to contribute. I have experience in CAD/CAM, 3D Modelling, Product Design, Engineering Drawing, 3D CAD, 3D Design, Solidworks and Fusion 360. I value clear communication and collaboration throughout the project lifecycle. Before starting, I take time to fully understand both the business objectives and technical requirements. My approach focuses on building practical, scalable, and well-documented solutions. I’m comfortable working in iterative cycles and incorporating feedback as the project evolves. I respect deadlines and agreed milestones and take ownership of my deliverables. I can adapt easily to your preferred tools, tech stack, and workflow. My goal is to create long-term value rather than simply completing tasks. I’d welcome the opportunity to discuss your project and next steps. Best regards, Marko O.
€30 EUR in 5 days
0.0
0.0

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