(Redirected from Emphysema) Chronic obstructive pulmonary disease (COPD) is a type of obstructive lung disease characterized by long-term poor airflow. The main symptoms include shortness of breath and cough with sputum production. COPD is a progressive disease, meaning it typically worsens over time.
(January 2010). A belt sander is a sander used in shaping and finishing wood and other materials. It consists of an electric motor that turns a pair of drums on which a continuous loop of sandpaper is mounted. Belt sanders may be handheld and moved over the material, or stationary (fixed), where the material is moved to the sanding belt. Stationary belt sanders are sometimes mounted on a work bench, in which case they are called bench sanders.
There are two distinct types of disk sander tools: pad sanders and random orbital sanders. Ad. The pad sander can be used on a variety of wood surfaces. It is also referred to as a finish sander because it is often used after the more abrasive belt or drum sander to smooth the surface down to a fine finish.here are four different types of pad sander tools. Each type of pad sander utilizes a different sanding motion. Straight-line sanders use back and forth strokes along the wood grain. Orbital sanders operate in a circular motion. Dual motion sanders can be used with either straight line or orbital strokes.