The invention provides a chain saw attachment for unobstructed cutting of smaller objects with diameters less than three inches and larger objects with diameters greater than three inches. An associated article of manufacture and computerized well logging system are also described. 0 gcm3 and an average grain size of not larger than 25 \u03bcm, is used as the metal powder p. Responsive to detecting transfer of the device to a second user, the computing environment may be transitioned to a second user experience mode.