Decorating with rocks, the beauty of rustic decorWritten by Joseph Lewitin
Rocks are dirty, crude, hard, and just plain nasty. But there is another side to rocks. They are also durable, beautiful, and come in a huge variety.
When a piece of stone is cut from a mountain, it is cut into a giant slab. This slab looks like a giant landscape. The stone can be any color that exists in nature, red, green, yellow, and these colors are streaked across face of stone. When it is cut or broken down, each piece becomes a tiny unique item that can then be turned into any number of beautiful decorating items.
The most common stone household item are stone tables. Stone tables match stone and ceramic flooring. They are one of a kind, and beautiful. They can easily be set up indoors or outdoors, and they dont stain, because rocks dont stain.
How to Align Your ShaftsWritten by Thomas Yoon
In last issue, we discuss about shaft seals and how liquid is prevented from coming out from pump housing even though shaft is rotating. Ezine Article
Some mechanical seals are made to very fine tolerances. Damage to mechanical seals and bearings can sometimes be cause by misalignment of pump shaft with motor shaft.
Whenever some of motors or driven machinery is dismantled or even when machines are not running smoothly, alignment has to be done.
The purpose of alignment is to ensure that centerline of motor rotor shaft coincides exactly with centerline of driven machinery. Alignment is essential to ensure that machine runs smoothly with minimum vibration.
Provided two shafts are not bent crooked, two alignments to be checked and adjusted are: Offset alignment and Angular alignment.
Most alignments are rough alignment that can be done using straight edge ruler and feeler gages. However for precision alignment, use of dial gauges with magnetic bases can be used.
The radial alignment is checked using a straight edge ruler. By placing ruler across coupling halves at top, bottom and both sides any gaps between 2 coupling halves will indicate that shaft is offset slightly. The misalignment can be corrected by shifting motor or by putting shims to raise up motor or driven machine.