I've been using a pantograph manual engraver with great success for several years. It a a New Hermes VB2. It's a fairly heavy duty machine, i would compare the fit, finish and smoothness to my Bridgeport. I've got everything I could possibly use with this machine but I still can't figure out how to engrave a barrel without using some form of rotary attachment. I've racked my brain for two nights now trying to figure it out and I've given up. I've attached a picture of how I do engraving on barrels currently. As you can see it takes some time to get the flat area made in the mill and then set up in the engraver so the flat is perfectly level. I've got number stamps but I'd like to make the barrel markings as informative as possible. Any advice on some homemade or manufactured attachments I could use?