| 摘要 |
A trowel has wings made from a pentagonal blank of stainless steel sheet that is 1.2mm thick and bent about its central minor axis to include an angle theta of 105 degrees. The end of each wing has a peak at its outermost lateral extremity relative to the central axis. The part of the wing between the peaks and a working edge is bent towards front of the trowel and, in use is oriented towards the drywall panel's. An elevated trailing edge of each wing has a narrow flange, respectively, which again points frontwards and, in use, towards the panels. The flanges have radiussed ends for smoothing the edges of the compound. |
