If you're only concerned about the way the sheet prints, one way
would be to run a Workbook_BeforePrint macro that added the bottom
border at print time, then removed it afterward:
Private Sub Workbook_BeforePrint(Cancel As Boolean)
Dim wkSht As Worksheet
Dim hBreak As HPageBreak
Application.EnableEvents = False
For Each wkSht In ActiveWindow.SelectedSheets
If wkSht.Name = "bordersheet" Then
For Each hBreak In wkSht.HPageBreaks
With hBreak.Location.Offset( _
-1, 0).EntireRow.Borders(xlBottom)
.LineStyle = xlDouble
.Weight = xlThin
.ColorIndex = 5
End With
Next hBreak
wkSht.PrintOut preview:=True
For Each hBreak In wkSht.HPageBreaks
hBreak.Location.Offset(-1, _
0).EntireRow.Borders(xlBottom).LineStyle = _
xlNone
Next hBreak
Else
wkSht.PrintOut preview:=True
End If
Next wkSht
Application.EnableEvents = True
Cancel = True
End Sub
Put this in the ThisWorkbook code module.