Abstract: The Improved Guitar Plectrum Retainer of the present invention is mechanically fastened to bracketing in the pickguard location. The intended use of the present invention is to provide ease in alternating between plectrum and non plectrum techniques. The location and design of the improved retainer facilitate that ease of transition. When wishing to insert the plectrum into the retainer the practitioner need only contact the elongated cover of the retainer with the tip of the plectrum and slide the plectrum along the inner surface of the cover.

Abstract: Improved hand tools having a rotational head assembly, which allow an artist to draw or engrave directly on a printing plate and create “random dot half-tones,” for intaglio printing purposes. The tools can be used in conjunction with the other intaglio techniques of line etching, drypoint, engraving, hard ground etching, soft ground etching, aquatint, and especially mezzotint. The improved tool has a handle with an axial centerline, a lengthwise side-surface and a tapered end with a bearing. A wheel with a shaft is received into the bearing. The wheel has a rotational center-point and a textured perimeter surface that is a smooth wheel surface permanently encrusted with a particulate material. The bearing can be offset from the axial centerline of the handle, to align the wheel between the lengthwise side-surface and the axial centerline of the handle. Preferably, sintered diamond particulate materials are bonded to the surface of a metal alloy wheel.

Abstract: Improved hand tools having a rotational head assembly, which allow an artist to draw or engrave directly on a printing plate and create “random dot half-tones,” for intaglio printing purposes. The tools can be used in conjunction with the other intaglio techniques of line etching, drypoint, engraving, hard ground etching, soft ground etching, aquatint, and especially mezzotint. The improved tool has a handle with an axial centerline, a lengthwise side-surface and a tapered end with a bearing. A wheel with a shaft is received into the bearing. The wheel has a rotational center-point and a textured perimeter surface that is a smooth wheel surface permanently encrusted with a particulate material. The bearing can be offset from the axial centerline of the handle, to align the wheel between the lengthwise side-surface and the axial centerline of the handle. Preferably, sintered diamond particulate materials are bonded to the surface of a metal alloy wheel.