Imports System.IO
Imports System.Runtime.InteropServices

Module Example
    <STAThread()> _
    Sub Main()
        Dim objApplication As SolidEdgeFramework.Application = Nothing
        Dim objSheetMetalDocument As SolidEdgePart.SheetMetalDocument = Nothing
        Dim objModels As SolidEdgePart.Models = Nothing
        Dim objModel As SolidEdgePart.Model = Nothing
        Dim objEtches As SolidEdgePart.Etches = Nothing
        Dim objEtch As SolidEdgePart.Etch = Nothing

        Try
            OleMessageFilter.Register()

            objApplication = Marshal.GetActiveObject("SolidEdge.Application")
            objSheetMetalDocument = objApplication.ActiveDocument
            objModels = objSheetMetalDocument.Models
            objModel = objModels.Item(1)
            objEtches = objModel.Etches

            For Each objEtch In objEtches
                objEtch.Delete()
            Next

        Catch ex As Exception
            Console.WriteLine(ex.Message)
        Finally
            OleMessageFilter.Revoke()
        End Try
    End Sub
End Module