You need a functional prototype for testing yesterday, but the quoting process is dragging on. This endless back-and-forth wastes precious time, pushing back your entire project schedule.
The fastest way to get a prototype is to provide your supplier with a complete and clear request package. This includes 3D models (STEP), detailed 2D drawings (PDF), and leveraging standard materials and finishes to eliminate sourcing delays.
"Fast prototype delivery"
I've seen countless projects stall right at the starting line because of a slow or incomplete quoting process. From my years in the factory and now running my own custom enclosure business, I can tell you that speed isn't about rushing the supplier; it's about enabling them to work efficiently. A well-prepared request gets you to the top of the queue and shows that you're a professional who is serious about your project. Let's cover the three key areas that will get that prototype in your hands faster.
What files do I really need to send for the fastest quote?
You send over a file, but the supplier emails back asking for more information. This back-and-forth wastes days and makes you feel like you're not speaking the same language.
For the fastest quote, always provide both a 3D model in STEP format and a 2D drawing in PDF format. The 3D model is for the machine to read, while the 2D drawing is the contract that confirms all critical human-verified details.
"3D and 2D files for manufacturing"
The Two Files That Tell the Whole Story
Think of it this way: the 3D STEP file is the instruction manual for our CNC machines. Our CAM software reads it directly to generate the toolpaths that will cut the metal. It’s the essential guide for the automated part of the process. However, a 3D model doesn't tell the whole story. The 2D PDF drawing is the "source of truth" for the human engineers and quality inspectors. It's the document we use to verify that what the machine made is actually correct. I remember a client who only sent a 3D model. We had to guess the tolerances1, the surface finish, and which holes were threaded. The time we spent in back-and-forth emails to clarify these details delayed his prototype by a week. A complete package prevents this.
Your perfect request package should include:
| File Type | Format | Must-Have Information |
|---|---|---|
| 3D Model | STEP | The complete geometry of all parts. |
| 2D Drawing | Overall dimensions, critical tolerances, hole types (tapped, clearance), surface finish, material type, graphics/text details. |
Providing both files shows the supplier you understand the manufacturing process and allows them to generate a fast, accurate quote without any guesswork.
Can my design choices actually speed up prototyping?
Your fully custom design requires special materials and tooling. This inevitably leads to long lead times for sourcing and setup, making you miss your critical prototype deadline.
Absolutely. By designing around your supplier's standard extrusion profiles, using common alloys like 6063, and specifying standard finishes like black anodizing, you tap into materials they already have in stock. This can shave weeks off your prototype lead time.
%A storage rack filled with various standard aluminum extrusion profiles ready for use![](https://pumaycase.com/wp-content/uploads/2025/07/Aluminum-Extrusion-Collection.jpg
Design for Availability
The biggest time-sink in custom hardware is often creating something from scratch. For example, a completely new extrusion profile requires a new steel die to be made, which can take 4-6 weeks alone. This is a prototype killer. The smart move is to "design for availability." Ask your supplier for their catalog of existing extrusion profiles. By designing your product to fit inside one of these standard shapes, you eliminate that huge lead time for tooling. The enclosure is still uniquely yours because all the customization for connectors, buttons, and branding is done with fast CNC machining. I worked with an engineer, Jeff, who did exactly this. He adapted his PCB to fit one of our standard profiles and got his prototype in 10 days instead of the 2 months another supplier quoted him for a fully custom shape.
| Element | Standard Choice (Fastest) | Custom Choice (Slowest) |
|---|---|---|
| Extrusion Profile | Use a supplier's existing stock profile | Design a brand new custom profile |
| Material Alloy | 6063 or 6061 Aluminum | An uncommon or exotic alloy |
| Surface Finish | Standard Black or Silver Anodize | Custom RAL color powder coating |
Using standard components isn't a compromise on quality; it's a strategic decision to prioritize speed and efficiency, getting your product to the testing phase faster.
What information besides drawings gets my request to the front of the line?
You've sent perfect files, but your request is sitting in an inbox with dozens of others. You're not getting the priority attention you need, and the clock is ticking on your project.
Clearly state your required quantity, your target delivery date, and the product's application. This business context2 shows you are a serious, organized professional and helps the supplier treat your request with the urgency and priority it deserves.
"A professional and clear quote request"
Give Us the "Why" and "When"
From a supplier's perspective, we receive dozens of quote requests every day. The ones that are complete, clear, and professional get our immediate attention. Vague requests with missing information often get put to the side because they signal a project that isn't well-defined and will require a lot of follow-up. Providing key business details demonstrates that you have a solid plan.
Here's why this extra information is so helpful:
- Quantity (Prototype and Production): Tell us if you need "1 for a prototype, with a potential of 500/year." This allows us to quote you fairly for the prototype, knowing there is future potential. It changes our entire approach.
- Target Date: If you tell us you need the prototype in two weeks for a trade show, we can immediately check our schedule and see if an expedite is possible. Without a date, we assume standard lead times.
- Application: A simple phrase like "outdoor environmental sensor" or "handheld medical scanner" tells us so much. "Outdoor" means we need to pay special attention to the waterproof seal. "Medical" means cosmetic finish is a top priority.
This context transforms your request from a simple "how much to make this?" into the start of a real project discussion. It helps us help you, and it gets your request moved to the top of the pile.
Conclusion
A complete request with clear files, smart design choices, and full project context isn't just about getting a price. It's about building a partnership and getting your prototype made faster.
