All submissions must include these details for proper project tracking and management.

Title Block

• Include project name, part name, part number, revision number, material, finish, scale, and the author of the drawing.

Drawing Format

• Provide digital files in formats compatible with CNC machinery (e.g., DXF, DWG) and a readable format like PDF for review.

Revision Control

• Track all modifications with a dated revision table to ensure the latest version is used for fabrication.
  
  
  
  

Precise and unambiguous dimensional information is critical for quality control. 

Overall Dimensions

• Clearly state the overall length, width, and height of the finished part.

Features and Location

• Dimension all features, including the size and location of holes, cutouts, and bends.

Consistent Units

• Use a single, consistent unit of measurement (e.g., inches or millimeters) throughout all drawings.

Clear Dimensioning

• Avoid overlapping or duplicate dimensions. Place dimension lines and labels for maximum clarity.

Standard Tolerances

• Specify acceptable dimensional variations, such as using ISO 2768 (medium grade) for general dimensions.

Critical Tolerances

• For features requiring a precise fit, specify tighter tolerances directly on the dimension (e.g., ±0.010" for linear dimensions or ±0.5° for bend angles).

All material properties and finishing instructions must be clearly stated. 

Material Type and Grade

• Specify the exact material, grade, and properties (e.g., "Steel, A36" or "Aluminum, 6061-T6").

Thickness

• State the required material thickness or gauge.

Surface Finish

• Define the required surface preparation (e.g., sandblasting) and coating (e.g., "powder coat, RAL 5010" or "hot-dip galvanize").

Grain Direction

• If a specific surface finish or structural property requires it, specify the grain direction of the sheet metal.

Include all necessary instructions for fabrication and assembly to prevent misinterpretation.

Welding

• Indicate the location, type, and size of all welds using standard American Welding Society (AWS) symbols. Specify any post-weld treatments, such as grinding.

Bending and Forming

• Clearly show bend lines and angles. Call out the inside and outside bend radii and account for bend allowances.

Hardware and Fasteners

• Specify the type, size, and location of all necessary hardware, including bolts, nuts, and inserts.

Hardware Installation

• Include instructions for any hardware that must be installed during fabrication, such as weld nuts or self-clinching studs.

Assembly Sequence

• For multi-part projects, provide a detailed assembly drawing showing how all components fit together.

The following quality control measures are required for all fabricated parts.

Material Verification

• Raw material certifications (MTCs) must be provided.

Dimensional Inspection

• Final dimensional inspection is required after all fabrication processes are complete.

Surface Finish Inspection

• The finished part must be checked for cosmetic issues like scratches, dents, and uniform coating application.