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How it all works The focusing lens in a Co2 laser cutter/engraver converges the laser beam to form the focal point of the laser cutting or engraving material. This point is located at the sharpest point of convergence of the beam and is often referred to as the "spot size". Several factors can affect this spot size, which will ultimately determine the outcome of your project. The purpose of this article is to explain these differences and give you a better understanding of which lens is best for you.   What are the different options? The most common lens options are 1.5, 2.0, 3.0 and 4.0 inches. These measurements are the focal lengths needed for each lens to focus perfectly. For example, a 1.5-inch lens needs to be exactly 1.5 inches above the surface of the material to focus correctly. The main factors that distinguish each lens are spot size and depth of focus. The smaller the lens, the smaller the focal length and spot size.   What is the difference between them and which

When it comes to mud transport, familiarity with the pump and its components is a matter of course. However, it is also important to understand the components of each element of slurry transport. This understanding begins with a few basic questions: "What is the difference between   a slurry pump   and a water pump?" "What is special about slurry pumps?" and "What slurry pumping devices are available?"   Slurry Pumps vs. Water Pumps The difference between slurry and other fluid types is the presence of solids - gravel, copper or sand - in the fluid. Although in many cases this fluid is water, slurries may contain solvents, such as acids, alcohols or petroleum. Those non-aqueous components, whether solids or solvents, require slurry pumps. In contrast to the narrow and often inexpensive components of pumps, large replaceable slurry pump components are made of strong and often specialized materials. These parts allow the pump to efficiently and safely move