Sub ImportFunc() ' Set STL translator's CLSID and STL file name. Dim strCLSID As String Dim strFileName As String strCLSld = "{81CA7D27-2DBE-4058-8188-9136F85FC859}" strFileName = "C:\Part1.stl" Dim oAddIns As ApplicationAddIns Set oAddIns = ThisApplication.ApplicationAddIns ' Find the Rhino translator, get the CLSID and activate it. Dim oTransAddIn As TranslatorAddIn Set oTransAddIn = oAddIns.ItemById(strCLSld) oTransAddIn.Activate ' Get the transient object and take it as a factory to produce other objects Dim transientObj As TransientObjects Set transientObj = ThisApplication.TransientObjects ' Prepare the first parameter for Open(), the file name Dim file As DataMedium Set file = transientObj.CreateDataMedium file.FileName = strFileName ' Prepare the second parameter for Open(), the open type. Dim context As TranslationContext Set context = transientObj.CreateTranslationContext context.Type = kDataDropIOMechanism ' Prepare the 3rd parameter for Open(), the options. Dim options As NameValueMap Set options = transientObj.CreateNameValueMap options.Value("SaveComponentDuringLoad") = False options.Value("SaveLocationIndex") = 0 options.Value("ComponentDestFolder") = "" options.Value("ImportUnit") = 1 options.Value("ImportColor") = True options.Value("ImportColorIndex") = 0 ' Prepare the fourth parameter for Open(), the final document. Dim sourceObj As Object ' Open the STL file. oTransAddIn.Open file, context, options, sourceObj End Sub