Splits a double-sided input surface geometry into two single-sided surfaces – one equal to the front side of the input surface and one equal to the back side of the input surface.
Output Ports
Front/Back
This transformer splits a double-sided input surface geometry into two single-sided surfaces – one equal to the front side of the input surface and one equal to the back side of the input surface – through the Front and Back ports, respectively.
The surface output through the Back port will be a single-sided surface whose front is equivalent to the back side of the original geometry. If a single-sided geometry is input, it will be output via the corresponding output port, converted to a front-sided surface in the case of a back-sided surface.
Parameters
None.
Editing Transformer Parameters
Using a set of menu options, transformer parameters can be assigned by referencing other elements in the workspace. More advanced functions, such as an advanced editor and an arithmetic editor, are also available in some transformers. To access a menu of these options, click 
beside the applicable parameter. For more information, see Transformer Parameter Menu Options.
Transformer Categories
FME Licensing Level
FME Professional edition and above
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