Here's how to install a new internal drive as extra storage or as a new boot drive. Here, we installed Seagate's Barracuda 7200.10, a $124, 320GB Serial ATA (SATA) drive, inside a Dell Dimension 8400 running Windows XP Home Edition.
The tamping rod is a round, straight steel rod used with concrete cylinder molds, slump cones, and unit weight tests. Measures 5/8 diameter by 24 length. Both ends are rounded to a hemispherical tip. The tamping rod is plated for rust resistance and has a 6 scale in 1/4 increments engraved on end of the rod for measuring the slump. The Cat# TR375 is a 3/8 diameter by 12 length, rounded hemispherical tips, less scale.
Retipping is the process of rebuilding prongs that are worn but not worn out. The bench jeweler  keeping the stone in place  uses a high melting solder to affix a wire or metal bead (matching the prong's alloy and slightly exceeding its dimensions) over the top of the worn prong and fashions a new one.