I did the same thing as you and sourced an extra group handle to nakedise... i took it to the local metal worker to chop the bottum off it but i didnt really specify how i wanted it done. As a result it looks a bit rushed and for $10 im not too worried as i got the group handle for free anyway.
If you do take yours to the local metal worker...make sure you mark it as to where you want it cut tashie :)
Hard to say without seing it or knowing what machine its for but something like this should look nice?
P.S. This is the work GH not my DC one :)