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I have a simple rectangular block that needs to be milled from 6061-T6 aluminum, and I need a clean, ready-to-machine 3D file in .stp format so I can drop it straight into my CAM package. The blank size is 5.000" × 2.000" × 2.000". Along its 5-inch length the top face must become a true cylindrical surface with a 333.335 in radius. Across the 2-inch width that surface stays perfectly flat—no crown—so the cylinder runs only lengthwise. That geometry should produce a sagitta of roughly 0.0094 in at mid-span. Dimensional accuracy is critical: please hold ±0.001 in on all three overall dimensions and keep the cylindrical profile within the same tolerance. The model should reflect a smooth machined finish; I’m targeting 32 µin Ra or better and will handle the tooling strategy myself once the solid model is correct. Deliverable • One native .stp file representing the finished part, fully constrained and ready for CNC programming. I’ll review the file by overlaying it on my spec and checking the radius, sagitta and corner stock removal, so make sure the surface reads as a true analytic cylinder, not an approximated spline. Let me know if you need any more numbers before you start.
Project ID: 40566681
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47 freelancers are bidding on average $27 USD for this job

With over 10 years of experience in handling intricate mechanical design projects, including the creation of clean and ready-to-machine 3D files for CNC applications, I am confident that I possess the skill set and know-how to deliver your Aluminum CNC Part STP Model exactly as per your specifications. Having been exposed to a wide range of software tools such as SolidWorks, AutoCAD and CATIA, it has enabled me to take on diverse projects with great precision and strict adherence to dimensional tolerances. Precision is a primary factor for structural components like this one you require, and I share your understanding of its importance. My hands-on experience in consistently maintaining ±0.001 in accurate dimensions will ensure quality outcome for your project. Additionally, I am adept at creating a machining-friendly design even before the actual process, minimizing the chances of any discrepancies during the production stage. To conclude, I believe my expertise in CNC modeling combined with my hunger for perfection aligns perfectly with the meticulousness required in creating your STP model. My commitment is not only to fulfill your job requirements but also to guarantee 100% satisfaction by delivering well-defined and future-proof products that are suitable for all stages of your manufacturing process. With open lines of communication for any clarifications or modifications throughout the project, let's work together to bring your vision to life preci
$20 USD in 2 days
7.9
7.9

Hello, I`m an experienced design engineer skilled in SolidWorks, interested in this project and ready to discuss any details.
$20 USD in 1 day
7.9
7.9

Dear Sir, As a mechanical engineer, I am a SolidWorks/Fusion360/AutoCAD expert and product designer. I’m excited to submit my proposal for your project. I have experience converting product concepts, sketches, and reference designs into detailed manufacturing drawings and production-ready CAD models. Here is my service; ⭐Detailed 2D manufacturing drawings. ⭐Create a DXF and PDF file for CNC/Laser/Plasma cutting. ⭐Creating STL, STEP and X_t files for 3D Printing and Manufacturing. ⭐3D modeling/rendering of assembled parts. I would be glad to discuss your project in more detail and answer any questions you may have. I'm ready to get started immediately. Thank you for considering my proposal. I look forward to working with you. Best regards Ivy
$20 USD in 1 day
6.5
6.5

Hi, I can create an accurate STP model for your aluminum CNC part with clean parametric geometry and manufacturing-ready features. I have 7+ years of experience in mechanical design and CNC-ready CAD modeling. • CNC-ready STP modeling • Parametric CAD design • Precision manufacturing geometry • STEP, SolidWorks & source files Portfolio: https://www.freelancer.in/u/xabhix Available to start immediately. Could you share the drawing or dimensions and let me know if the model needs to follow any specific machining tolerances? Best regards, Abhishek
$30 USD in 1 day
6.6
6.6

Hello, I am interested in helping you with creating the 3D model of the aluminum CNC part as per your specifications. I have experience in creating precise 3D models for CNC machining and can ensure the dimensional accuracy you require. I will carefully design the model to meet your requirements for the cylindrical surface and sagitta measurements, ensuring a smooth machined finish. Please have a look at our Freelancer portfolio through the links given below. https://www.freelancer.com/u/CreativeDesign50 Looking forward to working on this project and providing you with the accurate .stp file for your CNC programming needs. Best regards, Kirandeep K.
$20 USD in 1 day
6.3
6.3

Sagitta checks out: R333.335 over the 5in length gives 0.00938 at mid-span, matching your 0.0094. The key requirement is your last line: the top must be a true analytic cylinder, not a lofted spline approximation. I'll cut it as a genuine cylindrical face so your CAM reads exact curvature, swept only lengthwise so the 2in width stays dead flat with no crown. Build: 5.000 x 2.000 x 2.000 blank, top face replaced by a revolved/extruded true cylinder at R333.335, held to ±0.001 on all three overall dimensions and the profile. Exported as native STEP with analytic geometry preserved, verified by measuring radius and sagitta in-model before handoff. Note: 32 µin Ra is a machining/tooling outcome, which you're handling, the solid itself carries no finish data, so I'm delivering geometry only, correct per your scope. Fast turnaround, this is a same-day part.
$30 USD in 4 days
5.9
5.9

Hi, there I hope you’re doing well. I’m a Mechanical Engineer with strong experience in SolidWorks, Fusion360, Inventor, product design, 3D modeling, Printing, and manufacturing drawings. I’ve completed many projects as following: • 3D modeling and mechanical design with functions • Detailed engineering drawings and GD&T • Product development from sketches or new concept idea • 3D printing(STL) and Design for manufacturing (STEP) • High qualitied Rendering I can deliver accurate results and fast revisions, and I always maintain clear communication and reliability. I’d be happy to discuss your project details and start immediately. Looking forward to working with you. Best regards
$30 USD in 1 day
5.2
5.2

As a seasoned professional in the realm of 3D design and modeling, I have accumulated nearly two decades of experience working with intricate software such as AutoCAD and SolidWorks. This proficiency only amplifies my readiness to tackle your project which includes crafting a precise 3D file in .stp format- something I perform frequently. To elaborate further, I am well-versed with the small nuances required to deliver, robustly engineered, ready-to-machine designs which aligns perfectly with your needs. Moreover, my structural engineering background gives me a meticulous eye for precision meant to satisfy stringent dimensional requirements. And it's not just technical, I also understand the art of good design. Transformation from imagination or concept into reality thrills me, more so when it comes to intricate designs such as yours. Rest assured that I will deliver for you a true analytic cylinder that accurately represents your specifications down to the finest tolerance levels. Additionally, time is of utmost significance in delivering the perfect product. With this in mind, my commitment extends towards making myself readily accessible to address any questions or provide clarifications while ensuring expedient delivery. Choose me for your project and benefit from both my exemplary 3D modeling skills and my willingness to go above and beyo
$20 USD in 1 day
5.7
5.7

Hello, My name is Ben Jackson from Jetjams Technologies. We can create a precise, CNC-ready 3D model of your aluminum part and deliver a fully constrained .STP file that meets your machining requirements. What we will deliver: * Accurate 3D CAD model in .STP format * True analytic cylindrical surface (not a spline) * Correct radius and sagitta as specified * Overall dimensions held to your required tolerances * Smooth, CNC-ready model for CAM programming * Fast communication and revisions if needed We pay close attention to precision and manufacturability to ensure the model is ready for machining. Price: * Best reasonable price: $120 USD We are so much grateful to serve you. Best regards, Ben Jackson Jetjams Technologies
$120 USD in 7 days
5.3
5.3

Hello, I reviewed your machining requirements, and the key requirement is creating a mathematically exact analytic cylindrical surface rather than an approximated profile so the STEP model imports cleanly into your CAM software without introducing machining deviations. The model will need to maintain the specified overall dimensions while ensuring the radius, sagitta, and remaining corner stock all reconcile precisely within the stated tolerances for CNC verification. I have worked on similar precision CNC and manufacturing CAD projects and can share relevant samples once we connect in chat. Also a quick question, do you want the STEP file exported using AP203 or AP214 to match your preferred CAM workflow? Best Regards, Muskan
$10 USD in 1 day
5.0
5.0

Hello, I hope this message finds you well. My name is Rade, and I am a mechanical engineer based in Belgrade, Serbia, with over nine years of experience in the field. I have completed many projects throughout my career, primarily utilizing SolidWorks software. My portfolio showcases several projects across various sectors, including the military, food, and pharmaceutical industries. Each project required a high level of professionalism and expertise in mechanical engineering. After reviewing your project, I am confident that I can assist you in developing an effective solution. I invite you to explore my portfolio, where you may find relevant projects that align with your needs. To ensure the best outcome, I would appreciate any additional information, ideas, or drawings you may have regarding the project. This will help me gain a deeper understanding of your specific goals. I look forward to collaborating on this project and future endeavors. Best regards, Rade
$20 USD in 7 days
4.2
4.2

Hi, how are you doing? I went through your project description and I can help you in your project. your project requirements perfectly match my expertise. We are a team of Expert Mechanical design Engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas: Product Design | 3D CAD Modelling Finite Element Analysis | Computational Fluid Dynamics Thermal analysis | Structural analysis HVAC and Heat load calculation We are proficient in using following software’s: AUTOCAD SOLIDWORKS ABAQUS ANSYS APDL | ANSYS Fluent MATLAB | SIMULINK COMSOL Multiphysics FUSION360 | CATIA We have good command over REPORT WRITING, we can show you many samples of our previous reports. We can discuss further details in the message box.
$200 USD in 7 days
4.8
4.8

Hello, I’d be happy to assist with your project. I have over 10 years of experience in injection mold design and manufacturing engineering, helping transform concepts and existing models into accurate, production-ready designs. My expertise includes: 2D & 3D CAD modeling using Siemens NX 11 Injection mold design and manufacturing support Sheet metal design and development CNC-ready file preparation for machining Reverse engineering from STL/mesh files into precise CAD models I can take STL or mesh files and convert them into clean, editable CAD geometry, optimized for manufacturing, modification, or mold design. I focus on precision, manufacturability, and reliable communication to ensure the final design works perfectly in production. I’d be happy to review your files and discuss the best approach for your project.
$10 USD in 1 day
4.1
4.1

As someone with extensive experience in 3D modeling and designing, I'm Mehwish the perfect fit for your Aluminum CNC Part STP Model project. Over the years, my passion for creating precise, print-ready 3D models has allowed me to deliver designs with high levels of dimensional accuracy - such as the one you seek - and I'm very strict about adhering to client's specified tolerances. My proficiency in tools like SolidWorks, Fusion 360, and AutoCAD will ensure that your dimensions are held within the ±0.001in range that you've requested. Your requirements for a true analytic cylinder aligns well with my expertise in generating clean, ready-for-manufacturing geometries, regardless of the printing method being used. I am also very well familiar with generating STP files, a format that you specifically require for your project without any problem. My detailing and quality-driven approach are further enhanced by my thorough knowledge of CAM packages like Cura, PrusaSlicer among other slicing softwares which allows me to confirm exact machined finishes as expected from your project. If you choose to work with me, I'll offer regular updates on progress and thorough checks to ensure compliance not only in terms of created geometry but also adherence to target surface finish. I would sincerely love to be part of creating a print worthy design that could meet as well as exceed your expectations. Let's turn your ideas into reality together!
$17 USD in 1 day
4.1
4.1

Hello, With extensive experience in CAD/CAM, SolidWorks, Mechanical Engineering, AutoCAD, 3D Modelling, and Precision Mechanical Design, I can deliver an accurate, manufacturing-ready STEP (.stp) model for your CNC workflow. The part will be modeled as a true parametric solid with a 333.335-inch analytic cylindrical surface, ensuring the specified sagitta is achieved without using spline approximations. All overall dimensions and critical features will be verified to meet the required ±0.001-inch tolerance, making the model suitable for direct import into your CAM software. I pay close attention to geometric accuracy, feature continuity, and machinability, ensuring the finished STEP file is clean, fully constrained, and ready for CNC programming and inspection. I can begin immediately and deliver a high-quality result on schedule. Best regards.
$20 USD in 7 days
3.9
3.9

Hi there ! As an experienced mechanical designer, I understand how crucial dimensional accuracy is to the success of your project. My skillset in 3D modeling, specifically using SolidWorks and AutoCAD makes me highly adept at making precise, customized designs. I'm familiar with design for CNC machining and my approach always prioritizes efficiency, ease of manufacturing, and cost-consciousness - traits that align perfectly with your project specifications. To deliver a fully constrained and ready-to-machine 3D file in .stp format, I ensure I double-check all my models against the spec as well as against important factors like radius, sagitta, and corner stock removal to ensure minute details aren't overlooked. This thorough approach allows for any necessary revisions before finalizing the model. Overall, my wide-ranging skills of 3D CAD, 3D Design, Mechanical engineering combined with my knowledge in CNC machining make me a perfect fit for this project. Entrusting your CNC part model needs to me would mean receiving a clean, accurate and high-quality deliverable that will fit seamlessly into your CAM package. Let's turn your vision into a reality together.
$15 USD in 1 day
3.2
3.2

Hello, We went through your project description and it seems like our team is a great fit for this job. Please come over chat and discuss your requirement in a detailed way. Thank You
$25 USD in 1 day
3.0
3.0

Hello, I would be glad to create your CNC-ready STEP (.stp) model exactly as specified. With experience in CAD modeling for precision-machined components, I understand the importance of maintaining true analytic geometry rather than approximated spline surfaces. Your part will be modeled from a 5.000" × 2.000" × 2.000" 6061-T6 aluminum blank, with the top face formed as a true cylindrical surface running only along the 5-inch length, maintaining the specified 333.335" radius and approximately 0.0094" sagitta. I will ensure the model is fully constrained and dimensionally accurate to your ±0.001" tolerance requirements, with clean geometry suitable for direct import into your CAM software. Before delivery, I will verify the overall dimensions, radius, sagitta, and corner stock removal to ensure the finished STEP file matches your specification. The final model will contain an analytic cylindrical surface for reliable CNC programming and inspection. Give me one opportunity to handle your project. I assure you that I will complete the work with full dedication, accuracy, and professionalism. I am confident that my skills and experience will meet your expectations and deliver high-quality results on time. I am ready to begin immediately and can deliver the finished .stp file promptly.
$20 USD in 7 days
2.9
2.9

Hi, I can make the 3D model of the rectangular block for CNC and export it as STP file. I have experience in 3D modelling in FreeCAD. I know how to turn anything into 3D model and export it as STP file using FreeCAD. I will follow your references and dimensions to model the block for CNC. I will also add a 333.33 inches radius cylindrical surface to the top. I will make the 3D model solid and watertight. There will be no non-manifold edges. The STP file will be error free touse and ready for CNC. Can you share a reference photo or sketch with me? Thank you for your attention. I would be happy to collaborate with you on this project.
$10 USD in 1 day
2.3
2.3

Please read this. Your approach might be favorable but wouldn't it be more effective if we ensured a true analytic cylinder surface for the required part? Ensuring a true analytic cylinder surface will guarantee precise dimensional accuracy, meeting your critical requirements with a smooth machined finish. This approach will streamline your CAM package integration and minimize any post-processing adjustments. I have further ideas and strategies to enhance the overall quality of the project. I am keen on elaborating and collaborating, even beyond payment. One quick question: What is the desired deadline for the project? Regards, Joshua Jaime Saunders
$12 USD in 7 days
2.0
2.0

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