guidelines to get a quick and exact quotation from your injection molding supplier

Getting a fast and reliable quote from your injection molding company is really important if you want to plan your project and budget effectively. Giving them all the details they need right away will help make sure things move along quickly so you get your quote when you need it. That way you can avoid any hold ups and keep things running smoothly.

The Significance of Initial Design in Your Purchase Decision

When it comes to the initial design of a product, its importance cannot be overstated. Many a time, I’ve been approached for a price estimation based solely on a sketch. However, it’s crucial to understand that a mere sketch is a far cry from a comprehensive quotation. The official design units are typically measured in “mm” or “inch,” and even a marginal difference of 3-5 mm can translate to a substantial variance in costs. This holds particularly true for larger molds constructed from expensive mold steel like S136, which costs around USD 18 per KG, and with additional expenses for heat treatment at USD 3.5 per KG.

Even seemingly minor features of a part, such as sidewall undercuts or holes, can trigger a significant deviation in both mold construction and injection molding expenses. For instance, the inclusion of a small hole or undercut necessitates the incorporation of a slide mechanism, adding a weight of 10+ kg and requiring extra machining.

Surprisingly, most initial sketches lack these crucial features, often leading to guesswork on the part of mold makers. Regrettably, this guesswork is frequently based on incorrect assumptions due to ambiguous information.

Consequently, many mold makers tend to overlook such inquiries. It’s not a lack of willingness to assist but rather an inability to provide effective solutions. Crafting a precise quotation demands time and effort, and mold makers prefer to invest their resources in projects that hold a higher potential of materializing.

Allow me to propose a constructive strategy: Engage with an injection molding or tooling engineer, someone who you can readily refer to (I’m delighted to offer my expertise as a consultant as well).

A face-to-face dialogue with this professional will enable you to articulate your requirements in terms of quantity and quality, a crucial and highly efficient approach. If you’re in the process of developing a novel product, investing in this preliminary phase will undoubtedly yield significant dividends in the long run.

Remember, a well-laid foundation at the design stage can pave the way for a smoother and more cost-effective journey ahead.

As a China plastic mold manufacturer far way from you for face to face communication, what we need to know for the mold building and injection molding requirement:

 For mold building onlyMold building & injection molding
2plasticsplastics and its weight(unless you have 3D model)
3Mold steel and hardness demand 
4Quantity need to be moldedQuantity need to be molded
5Surface Demand (mold finishing, gate demand)Surface Demand (color, mold finishing, gate demand…)
6Hot runner Drops 
7Control size, assembly demandControl size, assembly demand
8 Package
9 Second operation (paint, print…)

3D model could help to make a precise pricing for you ,and the software we use: solidworks,UG and Autocad .

The format we accept:

  • .dwg
  • .prt
  • .sldprt
  • .x_t
  • .iges

time and job for each part

Design Of Components 7 Days

Topworks can optimize your design for cost savings or ensure compatibility by optimizing your design before tooling. Clients are welcome to supply 3D files

Parts Prototyping (If Necessary) (2 -3 Days)

Topworks can utilize Computer Numerical Control (CNC) to produce a machined prototype or 3D printing that you can see and feel to validate the design of your part.Also we supply vaccum casting service

Tool Design (3-7 Days)

During this stage, your Tooling Information Worksheet is used to design the tool.

Tool Design Check (2-3 Days)

The accuracy of the tool design is validated.

Tool Fabrication (3-8 Weeks,It Depends)

The tool is precisely fabricated according to the validated design using Computer Numerical Control (CNC), and Electrical Discharge Machining (EDM) …

First Shots To Client (T1,2-5 Days)

The first test shots will be sent via courier soon after the injection molds are made. Once sent, these usually arrive in 2-5 days.

Tool Modifications And Texturing (3-7 Days,It Depends)

At this point, Topworks makes any changes to the tool that is necessary to bring it into compliance with the approved specifications. Topworks makes any changes that are necessary (specifically excluding design changes, which are always charged for) free of charge.
In this stage, the texturing process is done, which is usually the last step before mass production.
Topworks side

Mass Production Run Or Export 

In this stage, the tool is handed over to the customer or ready for injection molding.

Getting the right injection molding quote takes a bit of legwork, but it’s worth it! Start by sending your supplier all the nitty gritty design details – your CAD drawings, resin type, quantity needed, etc. The more exact info you provide upfront, the more accurate their quote will be.

Also think about the bigger picture like timelines or any secondary services needed. Map all that out so your supplier knows the whole scope of the project from the get-go.

I can’t stress this next part enough – ask questions! If you’re unsure about anything at all, whether material choice or production capabilities, just ask. A good supplier will answer all your questions clearly without making you feel bad for asking.

Finally, do your homework to find the right injection molding partner. You want someone who has made products like yours before and has rave reviews for quality and service. Taking the time to find the right match means the whole project will run a lot more smoothly.

1. Prepare your part details:

  • CAD drawings: Provide both 2D and 3D CAD files in common formats like .pdf, .stl, .igs, or .step. These files should clearly showcase the part’s dimensions, tolerances, surface finish, and any special features.
  • Physical samples: If CAD files are unavailable, send physical samples of the desired part along with clear annotations.
  • Material specifications: Specify the exact type and grade of plastic resin you require. If unsure, consult your supplier for recommendations based on your part’s application and performance needs.
  • Part quantity: Indicate the estimated number of parts you need, as production volume significantly impacts the quoting process.

2. Define your project requirements:

  • Project timeline: Share your desired production deadlines or turnaround time expectations.
  • Mold needs: Indicate if you require a new mold build or plan to use an existing one.
  • Additional services: Specify any additional services you need, such as prototyping, finishing, assembly, or packaging.

3. Communicate clearly and concisely:

  • Provide detailed descriptions: Don’t assume your supplier understands every aspect of your part or project. Explain its intended use, functionality, and any specific considerations.
  • Ask relevant questions: Don’t hesitate to clarify any doubts you have about the quoting process, material options, or potential challenges.
  • Communicate promptly: Respond to any requests from your supplier quickly to avoid delays.

4. Choose the right supplier:

  • Experience and expertise: Select a supplier with proven experience in producing parts similar to yours.
  • Reputation and certifications: Look for suppliers with a strong reputation for quality, reliability, and compliance with relevant industry standards.
  • Communication and customer service: Choose a supplier who is responsive, communicates effectively, and understands your needs.

Tips for Streamlining the Mold Buying Process

Crafting an Effective RFQ

Purchasing a mold can be a complex endeavor, but adhering to certain guidelines can significantly ease the process. While these guidelines aren’t rigid, they hold immense value for most moldmakers.

1. Detailed RFQs Yield Accurate Quotes

To effectively communicate your requirements, furnish a Request for Quotation (RFQ) that leaves no room for guesswork. Spell out specifics like mold type, cavity count, steel preferences, expected mold lifespan, and necessary guarantees. If uncertain, collaborate with your moldmaker to pinpoint the ideal mold for your needs. The more comprehensive your RFQ, the more precise the resulting quote will be.

2. Transparent Intent in Requesting a Quote

Be transparent about your purpose for requesting a quote. If you seek a ballpark estimate for marketing purposes, articulate that intention. Avoid seeking an exhaustive engineering evaluation for a project that’s far in the future. Moldmakers invest time in quotes with promising potential, so align your requests with genuine prospects.

3. Respecting Intellectual Property

Acknowledge the intellectual property of moldmakers, which encompasses their knowledge and inventive insights. Maintain confidentiality when seeking quotes, refraining from sharing ideas suggested by other moldmakers. Each moldmaker’s approach is unique; avoid transferring suggestions from one to another without due consideration.

Establishing a Collaborative Partnership

4. Partnering with Moldmakers

Foster a robust partnership with your moldmaker(s) by involving them early in your project. Engage in cost discussions, consider project longevity, and address part quantity expectations. Effective collaboration nurtures successful outcomes, enabling both parties to thrive through transparent teamwork.

5. Ongoing Communication is Key

Regularly engage with your moldmaker, encouraging consistent communication. Many moldmakers offer progress updates through online platforms like Gantt charts. Staying informed about the mold build’s status and adherence to the schedule is pivotal; hence, proactively request scheduled updates.

Ensuring Fair Payment and Navigating Changes

6. Adhering to Payment Agreements

Timely payment is vital, given the substantial upfront expenses moldmakers incur. Payment schedules may differ, such as down payments, milestone payments, and final payments upon part approval and mold shipment. Moldmakers can tailor plans for mutual benefit and fairness.

7. Managing Design Changes

Recognize that altering part designs can impact mold specifications. Excessive changes during mold development can extend lead times and inflate costs. Understand that modifying part designs often necessitates corresponding mold design adjustments, which demand additional time and resources.

Finalizing the Mold Buying Process

8. Defining Completion Criteria

Precisely determine when a mold is deemed complete, which in turn influences the final payment. Typically, a mold attains completion when it can produce parts adhering to print specifications. Minor modifications may be made to align with these dimensions. Any post-approval changes are accommodated via engineering change orders, priced accordingly.

9. Vigilance against Unrealistic Deals

If an offer seems excessively attractive, exercise caution. While a low-priced quote may tempt, it might not deliver the anticipated value. Prioritize quality, as the mold’s effectiveness directly impacts the quality of the molded components.

In summary, adhering to these guidelines can significantly enhance the mold buying process. Transparent communication, collaborative partnerships, and adherence to quality standards ensure a smoother journey towards acquiring molds that meet your needs.