
Closed
Posted
Paid on delivery
Job Title: Optomechanical/Product Design Engineer Needed for Custom Laboratory Liquid Measurement Device (CAD/STEP) Project Overview: We are designing a high-precision fuel density and volume testing device. We require a manufacturing-ready 3D CAD model (STEP/IGES formats) of a custom 500 mL testing beaker assembly. The assembly integrates a borosilicate glass beaker, an automatic overflow/spillover mechanism, a sapphire glass optoelectronic sub-chamber, a floating target, and embedded sensors. We need 3 to 5 physical prototype units produced, so the design must be optimized for small-batch specialized manufacturing (scientific glass blowing/machining and precision optical assembly). Key Design Components & Scope: 1. Beaker Geometry (Borosilicate Glass): * Must hold an internal volume of exactly 500 mL from the base up to the lower lip of a side-mounted overflow spout. * Features an integrated, downward-angled overflow spout. The transition edge must be a sharp knife-edge to prevent liquid surface tension from holding back fluid. * Flat, uniform base for clean seating on an external load cell. 2. Optoelectronic Sub-Chamber & Lid Assembly: * A sealed metal/polymeric lid housing a Time-of-Flight (ToF) laser distance sensor. * The sensor must look through a circular Sapphire Glass Shield to isolate it entirely from volatile fuel vapors (petrol). * Must include an engineered gland/groove for a Viton O-ringproviding a reliable gas-tight seal (target 15% to 20% compression) without inducing fracturing stresses on the brittle sapphire glass. * Mount must hold the ToF sensor perfectly perpendicular (90°) to the window. * Provision/thread port to mount a **NTC/PT100 Temperature Probe** extending down near the bottom of the beaker. 3. Floating Target Disc (PTFE): * A lightweight, custom-profiled floating disc machined from black virgin PTFE (Teflon). * Must feature a "Top-Hat" stepped profile (raised central platform to act as a dry laser target; lower outer buoyancy ring to prevent tilting/surface tension wrapping). * Tolerances must allow the disc to slide smoothly up and down the beaker wall without jamming or drifting into the overflow channel. Required Freelancer Deliverables: * Production-ready 3D CAD Assembly (Native files + .STEP and .IGES). * Individual component files ready for manufacturing submission. * 2D Technical Drawings with explicit dimensioning and geometric tolerances (GD&T), specifically focusing on the O-ring compression gland and the glass-to-metal sealing interfaces. Preferred Qualifications : * Strong background in Optomechanical Engineering, Scientific Apparatus Design, or Enclosure Design for Volatile Environments. * Proven experience designing seals for glass, sapphire, and fuel-resistant elastomers (Viton). * Ability to advise on DFM (Design for Manufacturing) when working with specialized scientific glass blowers and precision CNC machine shops in India.
Project ID: 40561186
9 proposals
Remote project
Active 5 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
9 freelancers are bidding on average ₹7,639 INR for this job

As an Optomechanical/Product Design Engineer with a strong background in Scientific Apparatus Design and precision-based manufacturing, I believe I'm a perfect fit for your Custom Laboratory Liquid Measurement Device project. Not only am I proficient in 3D CAD all the way from modeling to manufacturing submission, but I'm also well-versed in designing seals and enclosures for volatile environments - an essential skill you require. My previous experience working with glass, sapphire, and Viton further aligns with your project needs. In terms of DFM (Design for Manufacturing), my connections with specialized scientific glass blowers and precision CNC machine shops in India provide a unique advantage. This allows me to not just deliver production-ready designs but ones that have been explicitly catered for small-batch specialized manufacturing, optimizing both cost and time factors. I appreciate the complexity of your project, especially with considerations like precisely holding 500 mL volume, using a laser distance sensor through a sapphire glass shield, and engineering Viton o-ring compression gland that doesn't strain the delicate glass. With my skills in not just designing such functionalities but my ability to communicate them clearly using technical drawings, I believe I can meet your project expectations impeccably. Invest in my skillset and let's build not just prototypes but also lasting professional relationship
₹12,500 INR in 3 days
7.8
7.8

Hi, I can design your custom laboratory liquid measurement device with accurate 3D CAD models, assemblies, and manufacturing-ready documentation. I have 7+ years of experience in precision mechanical design and product development. • Precision laboratory CAD design • 3D modeling & assemblies • Manufacturing-ready drawings • STEP, SolidWorks & source files Portfolio: https://www.freelancer.in/u/xabhix Available to start immediately. Could you share the required measurement range, target liquid, and whether this is for prototyping or production? Best regards, Abhishek
₹10,000 INR in 7 days
6.5
6.5

Hello, Your project aligns well with my experience in precision mechanical product design, enclosure development, and manufacturing-oriented CAD. I would be excited to help design this laboratory testing assembly from concept through production-ready documentation. I am a Mechanical/Product Design Engineer with 7+ years of experience using SolidWorks to develop precision components, scientific equipment, and custom assemblies intended for manufacturing. My approach focuses on accuracy, DFM, sealing reliability, and ease of assembly while maintaining tight dimensional control. For your project, I can deliver: * Complete 3D CAD assembly with native SolidWorks files, STEP, and IGES formats * Individual manufacturing-ready component models * Detailed 2D engineering drawings with GD&T, tolerances, surface finishes, and material specifications I also pay close attention to assembly, serviceability, and manufacturability, ensuring the design can be efficiently produced by scientific glass blowers and precision machine shops while remaining practical for future design revisions. I look forward to working with you. Best regards, Shivam Jha
₹10,000 INR in 5 days
5.9
5.9

Hi, I’m a Mechanical Engineer with experience in precision product design, CAD assemblies, and manufacturing-ready development. I can design your complete testing beaker assembly, including the borosilicate glass vessel, overflow system, optomechanical sensor housing, sapphire window, PTFE float, and Viton O-ring sealing features with proper GD&T and DFM considerations. I focus on designs that are accurate, manufacturable, and practical for prototype production. You'll receive native CAD files, STEP/IGES exports, detailed drawings, and documentation ready for scientific glass fabrication and CNC manufacturing. Thanks.
₹5,000 INR in 3 days
5.1
5.1

Hello from Indore! I am a Mechanical Design Engineer with over 4 years of experience in parametric 3D modeling, product design, and strict Design for Manufacturing (DFM). This optomechanical laboratory device aligns perfectly with my technical background. I have a proven track record of converting complex engineering requirements into production-ready CAD files. I have successfully completed similar projects involving high-precision mechanical fixtures and custom tooling design where maintaining strict tolerances was critical. For your testing device, I will ensure the 500 mL fluid boundary is perfectly parameterized in SolidWorks and optimize the Viton O-ring gland to achieve your target 15% to 20% compression without stressing the sapphire shield. I am genuinely eager to collaborate on this specialized project and deliver shop-ready files for your prototype run. My Payment Terms: 30% advance along with confirmation, with the balance due upon data delivery. Portfolio: https://www.freelancer.in/u/shubhamkumawat69
₹6,000 INR in 3 days
4.3
4.3

Hi there ! Drawing from my extensive experience in mechanical and product design, I am well-versed in transforming complex concepts into manufacturable products. Your project's peculiar demands are well within my skill set as a professional adept in 3D CAD modeling, ideally employing Solidworks like you require. The keenness for detail and precision you outline in your project aligns perfectly with my own commitment to design excellence. Thanks & regards Gaurav Sharma...
₹5,000 INR in 2 days
3.3
3.3

We recently helped a client achieve precise liquid measurement device design — and judging by your post, it sounds like we could do the same for you. We've worked on scientific apparatus designs and would love to bring that experience to your project. From your post, it sounds like you're looking for something precise, integrated, and fuel-resistant, specifically around designing a custom 500 mL testing beaker assembly with optoelectronic components and embedded sensors. We specialize in Optomechanical Engineering and have 75+ 5-star reviews on similar projects. I would love to help you with your project! The worst that can happen is you walk away with free consultation. Regards, Shannon.
₹6,250 INR in 7 days
0.0
0.0

Hello, I have experience creating precision mechanical assemblies in Blender and CAD workflows, and I can develop a manufacturing-ready 3D assembly with accurate tolerances, sealing features, and detailed technical drawings. I’ll ensure the design is optimized for small-batch production, delivering native CAD files along with STEP, IGES, and fully dimensioned manufacturing documentation.
₹7,000 INR in 2 days
0.0
0.0

Hi, I have reviewed your project requirements and understand the need for a precision optomechanical design suitable for scientific prototyping and small-batch manufacturing. I have experience creating manufacturing-ready CAD assemblies, precision mechanical components, sealing interfaces, and DFM-focused designs with STEP/IGES outputs and detailed technical drawings. I will carefully address the glass, sapphire window, Viton O-ring sealing, sensor alignment, and PTFE floating target requirements to ensure the design is practical for fabrication. I can provide organized CAD files, component drawings, GD&T details, and collaborate with your manufacturing partners throughout the prototype stage.
₹7,000 INR in 7 days
0.0
0.0

Bathinda, India
Member since Nov 21, 2019
$250-750 AUD
$250-750 USD
$30-250 USD
₹1500-12500 INR
€30-250 EUR
$250-750 USD
₹600-1500 INR
€30-250 EUR
£750-1500 GBP
₹12500-37500 INR
$30-250 USD
$30-250 CAD
$10-30 USD
€130 EUR
$30-250 USD
€8-30 EUR
₹600-1500 INR
₹1500-12500 INR
₹600-1500 INR
₹1500-12500 INR