I. Standard Process
The general process for requesting samples involves five steps: Selection—identify the specific product model (search for the part number online to see if samples are available); Submission—fill out an order form or click the “Request Sample” button; contact details are auto-filled after logging in;
Confirmation—the supplier reviews the request (major brands like TE offer 3-day global delivery to 62 countries, Weidmüller provides free samples within 72 hours, and WAGO ships on the same day); Receipt & Verification—check dimensions, materials, and functionality against the specifications upon arrival; Mass Production Decision—place a bulk order only after sample approval. Most international brands have online sample centers where you can apply using a corporate email; the service is free, with only shipping costs to be covered.
II. Custom Parts Request
How to request custom-made parts domestically.
Industry practice for custom machined parts involves a more rigorous prototyping process: Drawing Submission—provide 2D drawings in PDF or DWG format (specifying dimensions, tolerances, materials, and thicknesses) or, ideally, 3D models;
DFM Review—reputable CNC shops conduct a Design for Manufacturability (DFM) analysis and provide a quote within 24 hours, checking for issues like unreasonable tolerances, sharp corners, or deep slots; Prototyping—production begins after confirmation (1–5 days for 3D printing, 3–7 days for CNC machining); Sample Confirmation—receive photos, videos, or the physical sample to approve or request modifications; Mass Production—proceed to bulk manufacturing after confirming any changes. Free prototyping services exist (common for CNC and 3D printing), though material and shipping costs usually apply. The more standardized your drawings, the smoother the sample request process.
III.
Sample Costs
What is the approximate cost of samples?
According to industry data, sample costs fall into three tiers: **In-stock samples** ($10–$30, shipped in 1–3 days; often free, with the buyer paying only shipping); **Customized samples without new molds** ($30–$150 for minor changes like color or logo adjustments, 7–15 days); and **Pre-production samples requiring new molds** ($150–$800+, 15–30 days, with mold fees charged separately at $400–$2,700+). Shipping costs range from $25 to $80. A 2025 Alibaba supplier survey indicates that 67% of Chinese suppliers charge for samples—charging is the norm, while free samples are the exception (usually reserved for very low-value items). Opt for in-stock samples if your budget is limited, but pay the fee for customized samples if you need to validate a design.
IV.
Cost Offsetting
How are sample fees offset?
Industry practice allows sample fees to be deducted: when placing a bulk order that meets the Minimum Order Quantity (MOQ)—such as 50 or 100 units—the previously paid sampling fee is fully deducted from the bulk order total (e.g., if you paid 200 yuan for sampling and the bulk order is 2,000 yuan, you actually pay 1,800 yuan). For samples requiring mold creation, the fee is offset against the mold cost at an agreed-upon ratio, typically ranging from 30% to 100%. Platforms offering “free” samples (like the 1688 Sample Center) operate by requiring upfront payment, with the fee refunded upon a subsequent purchase. Crucially, the offsetting arrangement depends on a future order being placed and must be written into the contract; verbal promises regarding future offsets are easily invalidated by staff turnover.
Clarify the offsetting rules in writing within your inquiry when requesting samples.
V. Sample Validation
Key steps in sample validation.
Industry experience shows that the sampling stage determines success or failure: check against written specifications—verify dimensions, materials, surface finishes, and functions item by item rather than relying on intuition; sign off on the “Golden Sample”—both parties sign and seal the final confirmed sample to serve as the benchmark for mass production acceptance; require accompanying documentation—FAI (First Article Inspection) reports, material certificates with batch numbers, and process parameter records (standard practice for T1 samples from reputable injection molding plants); timing of verification—never place a bulk order before sample approval; verify with small batches first—order 5–10 units for trial use before scaling up (samples aren’t just for visual inspection; use them to run under actual operating conditions)—sign the mass production contract only after verification passes;
this is the true purpose of requesting samples.
Conclusion
How do you request samples for automation equipment components? The conclusion is a five-step process: “online selection, drawing review, paid prototyping, cost offsetting, and Golden Sample sign-off.” Process—register and apply via major international brands’ online sample centers (e.g., TE offers 3-day global free shipping, Weidmüller 72-hour delivery, WAGO same-day dispatch), or submit drawings for custom parts to receive a DFM review and prototype within 24 hours; Costs—$10–$30 for off-the-shelf samples, $30–$500 for custom samples, and $150–$800+ if new tooling is required (67% of suppliers charge fees; material and shipping costs are extra); Offsetting—full offset against bulk orders, with 30%–100% of prototyping costs credited toward tooling fees (provided this is stipulated in the contract); Verification—check against specifications, seal the Golden Sample, and require FAI reports and material certificates.
Industry convention dictates that sample fees purchase the opportunity for verification, not just the goods—spending a small amount to vet a supplier saves a fortune by avoiding mass production failures—clarifying offset and acceptance rules when requesting samples is more important than haggling over the sample fee itself.
