Customer Service and Support

Due to the custom-manufactured nature of our products, please be aware that all sales are final as stated in the order checkout confirmation. Returns will only be accepted at our discretion under specific circumstances where, upon thorough inspection, it is determined that there was a defect in workmanship, or the delivered part did not meet specification(s) clearly outlined in your original order or accompanying technical drawings.

To initiate a return for inspection, please contact us using the Support Request form within 3 calendar days of delivery of your order, providing detailed information and photographic evidence of the defect or specification discrepancy. A photo of the QC Inspection label or tag included in your package must be included. Returns sent without an RMA will not be accepted.

Support Request

Our customer service team will verify the issue(s) and determine whether the part should be returned, remade, or refunded. You will receive an email or be contacted by Rapid CNC Parts.com when that determination has been made.

If your return is approved following our initial review, we will issue a Return Merchandise Authorization (RMA) number. To ensure prompt processing, please clearly mark the RMA number on the return packaging and include the original QC label or tag that was attached to the part.

Returns that do not include the RMA number or original QC label/tag may not be accepted and will not be returned.

Support Request

We are committed to providing high-quality CNC machined and laser cut parts in accordance with the specifications agreed upon at the time of quoting and order acceptance. Parts are manufactured using advanced equipment and inspected to the requirements defined in the approved quote, drawing package, and order documentation.

Unless otherwise specifically stated in the approved quote, drawing, or order documentation, general tolerances may be applied in accordance with ISO 2768-m where applicable. This standard is provided as a general guideline only and does not constitute a guarantee of fit, function, or compliance for features that require specific dimensional control. For laser cut parts, standard commercial tolerances appropriate to the material, thickness, and cutting process may apply.

Any feature requiring a defined tolerance or specific functional performance must be clearly identified on an accompanying drawing or other approved engineering documentation at the time of quoting. This includes, but is not limited to, precision holes, slip fits, press fits, bearing fits, mating features, bend-critical geometry, assembly-critical dimensions, slot widths, and other critical-to-function features. Such requirements are considered non-standard unless expressly reviewed and accepted as part of the quote and order. No guarantee is made for unspecified tolerances, fits, or functional requirements on features not clearly called out in the approved order documentation.

For parts ordered without drawings, or where drawings do not define required tolerances or functional specifications, manufacturing will be based on the model, flat pattern, file geometry, and order information provided, using standard shop practices and commercially reasonable process tolerances. For laser cut parts, nominal dimensions are based on the approved file geometry, but final results may vary based on material type, material thickness tolerance, kerf, edge condition, taper, heat effect, and standard process variation unless tighter requirements are specifically quoted and accepted. The customer remains responsible for ensuring that all critical dimensions, fit requirements, and end-use performance requirements are properly specified before order acceptance.

If a defect in workmanship or a failure to meet the documented and accepted requirements is confirmed, we may, at our discretion, repair, replace, or issue credit for the affected part.

Learn More

Use our design guidelines to optimize your CNC machined and laser cut parts for cost-effectiveness, manufacturability, and quality by following essential best practices.

Proper material selection, simplified geometries, standard tolerances, appropriate corner radii, hole sizes, bend considerations, and careful attention to wall thickness, edge conditions, and surface finishes all play an important role in efficient manufacturing. Whether you are designing for CNC machining or laser cutting, these guidelines can help streamline your design process, reduce production costs, and improve overall part quality.

Design Guidelines

We recommend that all customers follow a Design for Manufacturing (DFM) approach when developing parts for production. When applied properly, DFM principles can improve part quality, reduce production costs, and help streamline the manufacturing process.

Key DFM considerations include:

Process — Select the right manufacturing process based on factors such as cost, material type, production volume, surface finish requirements, post-processing needs, and required tolerances.

Design — Part design has a major impact on manufacturability. Features such as wall thickness, part geometry, threads, corner fillets, faces, and overall complexity can significantly affect whether a part can be produced efficiently and cost-effectively.

Materials — Choose the appropriate material and grade early in the development process. Important considerations include strength, machinability, chemical resistance, thermal performance, flammability, and desired surface finish.

Environment — Consider the environment in which the part will be used so the design and material selection align with real-world operating conditions.

Testing — Evaluate how the part will be tested and verified to ensure it meets functional and compliance requirements. When standards or critical requirements apply, appropriate inspection or testing methods should be identified in advance.

In addition to following DFM principles, all parts should comply with our general design guidelines whenever possible to achieve the best overall results. For parts with higher complexity or features outside standard design recommendations, our online quoting system may require a manual review to confirm manufacturability, lead time, and cost before proceeding.

Parts that do not generally align with standard design guidelines may not be accepted for automated quoting and may instead require a manual quote. This can include, but is not limited to, features such as interior corner or floor fillets, undercuts, threaded or tapped holes, thin walls, engraving, deep drilling, complex contours, or a high number of machined faces or cut features. In these cases, manual review helps ensure the part can be produced to the expected quality level in a timely and cost-effective manner.

Learn more about DFM