Usually, the model is scaled 1:1, and when you create a 3D drawing, SW adjusts the scale on its own according to the size of your basemap (a small part will go to a large scale like 10:1 and a large frame to a small 1:10), using the standardised scales (those available by default in the list).
Scales in drawings apply to sheets or views. The scale of the active drawing sheet is displayed in the status bar at the bottom of the window, and the scale of the active view appears in the view's PropertyManager. You can also set the scale of a drawing when you print it.
To scale a sheet to an existing drawing, right-click the sheet and select Properties, then edit the scale values.
To set the scale of a drawing view, do one of the following :
For existing drawing views, select one or more views, and then set the scale in the PropertyManager.
In the case of new drawing views where the PropertyManager appears when the view is inserted (model view, projected, predefined, and so on), set the scale in the PropertyManager.
The predefined options in Use Custom Scale vary depending on the rating standard.
Autoscaling
The Autoscale New Drawing Views option in the System Options - Drawing dialog box controls the scaling of the new views, as follows :
When enabled, the SolidWorks software automatically scales the views to fit on the drawing sheet. The scale of the sheet then becomes the same as that of the views.
When disabled, views are inserted across the drawing sheet.
When you insert projected views, auxiliary views, and section views, the Use Parent Scale option is enabled by default. If you change the scale of the parent view, the scale of all child views that use the parent's scale is updated.
Scales in PropertyManagers
Use Parent ScaleApplies the same scale that is used for the parent view. If you change the scale of the parent view, the scale of all child views that use the parent's scale is updated. Use Sheet ScaleApplies the same scale as the drawing sheet. Use Custom ScaleApplies a scale that you define. If you select User-defined, type a scale in the box below it as x:x or x/x. Select Use Model Text Scale to maintain the geometry used in annotation views in parts.
The predefined options in Use Custom Scale vary depending on the rating standard.