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Why is my Flat Pattern not showing in SOLIDWORKS Drawings?

Monday January 9, 2023 at 10:00am

There are two main reasons why a flat pattern won’t show on a SOLIDWORKS drawing.

It may be linked to how the drawing is saved, or it can be related to how sheet metal parts are displayed by drawing views.

To help you avoid these issues, it’s important to understand flat patterns work.

Flat Pattern Not Working in Drawing

A FLAT CONFIGURATION

In a sheet metal part, flat patterns exist as features in a folder at the bottom of the Feature Manager Tree, which enables two functions.

Firstly, it allows the Flatten feature to work, as flat patterns are suppressed and unsuppressed as appropriate. Secondly, it enables the flat pattern features to be utilised within configurations.

When a flat pattern is inserted into a drawing, SOLIDWORKS creates a derived configuration within the part file named ‘DefaultSM-FLAT-PATTERN’.

This configuration holds the flat pattern information and should remain in the flattened state so that the drawing references the flattened part.

Here is where the issue can arise. If this configuration is flattened, modified, or changed to the folded state, then these changes will reflect in the drawing view.

To ensure your flat pattern is showing correctly in a drawing, the part must be flattened in the configuration ‘DefaultSM-FLAT-PATTERN’. In addition to this, any design modifications should be made to the parent, rather than any derived flat pattern configurations.

SAVE ALL COMPONENTS

Another common reason for the flat pattern failing is that the part is not saved when the drawing saved.

If a drawing view is created showing the flat pattern configuration, a derived configuration is created in the part file. Failing to save the part file with the drawing when prompted will cause the newly derived configuration to be deleted from the part, as the part file has been modified but not saved.

Choose ‘Save All’ or select the appropriate parts to save within the drawing environment to ensure your parts are kept up to date.

If you find you are still having issues with your flat patterns, then get in touch with our expert Technical Support team.

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