Fiberglass PencilPREAT Corporation
The holder for the fiberglass work like a mechanical pencil, and by turning the end of the pencil the user can extend or reduce the exposed fiberglass insert. A new fiberglass refill insert may be inserted into the pencil when needed.
The fiberglass insert is designed for removal of investment from castings and the removal of oxides or other discolorizations from cast or machined metal.
The user should use this instrument in front of a vacuum and wear both protective glasses and breathing masks to eliminate either breathing or absorbing the airborne fiberglass particles.