Abstract: A plaster applicator may include: a first sleeve, a tube slidably received within the first sleeve. An applicator head may be coupled at the first end of the tube and include an applicator tube coupled in an applicator hole in the applicator head. A first valve may be operably connected within the applicator head. A filling tube may be coupled in a filling opening in the applicator head. The applicator may also include a second one-way valve operably connected within the filling tube in the applicator.

Abstract: A plaster applicator for corners where walls meet includes a sleeve and a long tube slidably received within the sleeve. A piston is attached to the sleeve by a connector. The piston is concentrically received within the long tube whereby a sliding movement of the sleeve along the long tube provides a sliding movement of the piston within the long tube and vice versa. Further, the piston includes a gasket to prevents mud from leaking behind the piston. An applicator has a hole at an applicator end of the long tube. The hole provides liquid communication between the interior and the exterior of the long tube. A wedge is releasably mounted to the applicator.