Patent ID: 7316640

Claim:
A tool for forming articles from sheets of conformable material, comprising: a groove carrying tool component including an encompassing groove formed in a face thereof whereby the encompassing groove defines a protrusion encompassed thereby; and an annular extension carrying tool component including an annular extension engagable within the encompassing groove for enabling an engaged portion of a sheet of conformable material positioned between the groove carrying tool component and the annular extension carrying tool component to be conformed within the groove by forcibly engaging the annular extension within the encompassing groove; wherein the groove carrying tool component includes an alignment passage at a top face of the protrusion; wherein the annular extension carrying tool component includes an alignment passage at a terminal face of the closed-ended recess; and wherein the alignment passage of the annular extension carrying tool component is alignable with the alignment passage of the groove carrying tool component when the annular extension is engaged within the encompassing groove; wherein an alignment mark generally parallel to a longitudinal reference axis of the annular extension carrying tool component is provided on an exterior side face of the annular extension carrying tool component; wherein an alignment mark skewed with respect to the longitudinal reference axis of the annular extension carrying tool component is provided on the annular extension carrying tool component; and wherein an alignment mark extending substantially perpendicular with the longitudinal reference axis of the annular extension carrying tool component is provided on the annular extension carrying tool component.