When you need to order a type of CNC machined part, you need product quotes from multiple suppliers and choose the best one to start your project. This decision may be influenced by CNC machining costs, delivery time, lead time, and quality.

To ensure that you get an accurate quote, the manufacturing supplier will need your information to ensure that they can accurately produce the parts you expect and provide an accurate estimate.

When requesting a quote, to ensure a fast, reliable and accurate price estimate from your manufacturing partner, please prepare the following things.

1. Design drawings

As a general quotation, relevant documents are essential. Used to identify clear requirements, such as product definition, delivery requirements, etc. In CNC machining services, product design is the basis of CNC quotations. CNC machined parts usually have high precision and accuracy. In order to produce a final part with precise shape and size, please submit both 2D and 3D drawings.

2D drawings can specify product dimensions (length, width, diameter), tolerances, surface textures, and more features to be processed. 3D CAD design mainly requires the establishment of a programming language (G code) to guide the movement and operation of CNC machine tools. Even for projects that do not require CNC machining (such as vacuum casting), it is useful to use 3D CAD files to estimate raw material consumption and part weight.

General precision parts drawings: structural drawings, material selection, dimensions, process requirements (including heat treatment, surface treatment) Mechanical parts drawings with high precision requirements: In addition to the above, additional dimensional tolerances, form and position tolerances, fits, special process requirements, etc. may be required

2. Material

The material of CNC machining parts is an important factor in determining the total cost. Many types of metals and plastics can be used to make rapid prototypes and production parts. They each have unique mechanical and physical properties that can help you achieve the performance you want. The price of materials is not determined by CNC machining companies. There are many materials that can be used for CNC machining and rapid prototyping.

The choice of material depends on its mechanical properties, characteristics, processing technology and use. Tell us the characteristics or performance of the product you want to use, and we can provide you with a more accurate quotation. We can consider the use of material costs for related processing to make the quotation more accurate.

3. Quantity

The quantity or output is also important. This will change the delivery time and total cost. As you know, prototype processing is suitable for testing and development of individual parts. CNC machining is ideal for low/medium/high volume production. Recording the number of parts required can make quotes and delivery times clearer. Different manufacturing processes are best suited for different numbers of parts. Therefore, it is best to have a very good understanding of the quantity at the beginning of the quotation process.

4. Product Appearance

The appearance of the part may not be specified in the CAD design, such as color, surface finish, and other text. Clear information can be recorded with graphics and documents, but it is best to contact the supplier for subjective details. In order to obtain the most accurate product, there are some technical tools that can be used. If you want to change the appearance or obtain a specific appearance, different processes or operations will leave different surface finishes on the outside of the part, and make your requirements, including roughness, hue, etc.

The right color is very important for the success of product innovation. However, color can be subjective, so it is necessary to communicate this information to the supplier in a clear way.

Color Selection

Surface Finish

No matter which manufacturing process is used, the final surface finish will remain on the part. However, this may not be the effect you want.

Therefore, whenever possible, it is best to refer to a known surface finish standard and use a gauge or template to specify the desired finish. If flatness is important for your application, please specify the Ra value if known. If necessary, we can measure the texture and flatness of the samples you provide us.