Valve Liner steam ports 1.JPG
10-Oct-2005
The Valve Chest Liners first have the steam ports
drilled using a rotary divider to get the hole spacing correct, first
using a center drill and then the through hole. Next I chucked it up in
Gordon's lathe and machined the narrow/deep recess. This will be used
as a guide to file the round holes square. This will make the port
opening and closing sharper.
Matt then filed the holes square.