On your cutting tool ,there is a black knife like piece on the side that pops up. it is shaped in a point, use this to deburr,and true the end of your pipe. Copper is fast becoming a thing of the past. in the future check out P.E.X fitting and water disribution pipe, It is polyvinly, doesnt freeze, wont leak (coppor will eventually wear out ) you dont have to solder you can transition to copper or galvanize and you can bend it any way you need to ,no more offsets, requires special tools to install the crimp rings, You can rent these tools if you do not want to purchase them