Prepare a part drawing for bending

Show the faces, flanges, angles and assembly references on a view of the formed part. State whether key dimensions are inside or outside; the difference depends on material thickness and bend radius.

Add an isometric view or 3D file when flanges overlap in flat views. Apply tolerances to dimensions that matter functionally, such as hole spacing or alignment with a mating part.

Material and thickness affect the achievable radius, flat pattern and springback. Name the grade or, if it is undecided, describe the use and acceptable alternatives.

Mark visible faces, grain or brushing direction when appearance matters, and any protective film to retain. An appearance requirement may affect how parts are nested on the sheet.

There is no single minimum distance for every sheet. It depends on thickness, material, tooling and geometry. Send critical details for a feasibility review instead of relying on a generic rule.

Each bend must remain accessible to the punch and die. A formed flange can hit the tool or prevent the part from being positioned for the next operation.

For boxes and parts with several flanges, have the sequence checked before freezing the flat pattern. Mark surfaces that must not be scratched and support faces that need protection.

Before a production run, compare the first part with the finished drawing and test it with neighbouring components. Check functional dimensions, angles, hole alignment and visible surfaces.

If a correction is needed, record the drawing revision and approved flat pattern. This prevents parts from different versions being mixed in one batch.