Morning MH, The PergTamp was announced with much fanfare and hullabaloo, in a thread on another forum toward the end of June 2014, the thread struggled on until the end of August, since then there seems to have been little or no interest in the tamper. It was supposedly developed for use with VST basket, the statement was made that it was not suited to any brand of basket other than the VST. Some of the quotes re the device were quite humorous. "Never place the Pergtamp on a hard surface, drop it on the floor or hit the edge against hard objects. This will eventually bend the edge, changing the diameter and resulting in a tight fit, jamming, or uneven tamping" "Always pull the Pergtamp out of the basket slowly. Although the tapered sides increase airflow, there is still a vacuum effect if removed quickly. Watch out for any cracks appearing in the surface of the coffee grinds; this indicates that you are removing the tamper too quickly, and air is being forced up through the grinds instead of around the edges of the tamper" "This tamper will not fit in or work well with any other brand of basket. You shouldn