How much you know filling knife?

The filling knife has a flexible blade to apply plaster, mastic, or a paste as a filler. The traditional filling knife, as made since the 19th century, has a forged steel blade that is ground to a taper, and a bolster that is integral with the blade or pewter, and a hardwood handle.

The clips point putty knife, for glazing windows, has one curved side and the other has an angled straight edge. It is made the same way as the filling knife, with less of a taper grind.