MMD Archives April 2011 Contents of Digest 2011.04.15 Prev  Next Nr Subject Author 01 Seek Test Roll for A-roll Coin Piano Ron McUne 02 Seek Unusual Metric Size Tap & Die Bernt Damm 03 Unusual Screw Thread May Be Cycle Thread Peter Ravenscroft 04 Sharpening Leabarjan Perforator Seth Brown 05 FS: Pianocorder P-100 Michael Pedersen