NOVELTY - The method involves using several fabricated panels comprising a frame and a spanning skin. The frame is comprised with two frame ends and two frame sides. Each panel is interchangeable with any other panel. A sub-cylinder is formed from two fabricated panels and one baffle bar by securing the baffle bar between two frame ends of frames of the two panels, and forming a drum cylinder from two sub-cylinders.    USE - Method for fabricating rotating drum used for composting. Can also be used in drying rice and sugar.    ADVANTAGE - The electricity required for rotation of the drum is reduced, and reduced maintenance is achieved. The individual panels of the panelized drum are replaced without having to resort to major construction. The panels damaged through accident or normal abrasion are easily unbolted, removed and replaced. The lead time is shortened from eight weeks to one week, and the insulation process is less expensive than insulating the entire large drum. The panel size is varied to make composter drums of various sizes, and the number of panels is varied to give different size composters. The need for expensive cranes and material-handling equipment is prevented, and the overall shipping cost to the customer is reduced. The rotating drum using the panelized system is fabricated in the field without having to be insulated in the field, and the alignment difficult of the large drum is prevented.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: The method involves forming fabricated panels by using a cutting table fixture, using a multi-head drill press and by using a welding table. A drum head is attached to one end of the drum cylinder, and a drum cylinder is formed from two sub-cylinders. The drum cylinder is formed from two of sub-cylinders and one drive tire. Connectors are used for securing one baffle bar between the first frame end of the frame of the first panel and the second frame end of the frame of adjacent second panel. The connectors are used for securing adjacent sub-cylinders, and the drum cylinder is formed from two sub-cylinders and one drive tire. The rotating drum is rotated using a tangential rotational drive system engaging one drive tire.    (1) a method for mass production of and/or distribution of rotating drums, involves fabricating panels which are interchangeable with any other panel, and painting and insulating the panels. The painted and insulated panels are stacked for shipment, and the stacked panels are shipped. The fabricating panels are comprised with a frame and a spanning skin. The drum head is fabricated, and the drum head is shipped with the stacked panels. The drive tire is fabricated, and the drive tire is shipped with the stacked panels. The drive tire is fabricated, and the panels are shipped. The drive tire with stacked panels is shipped to the end user for assembly in the field, and the rotating drum is assembled in the field using connectors; and    (2) a rotating drum has several panels comprising a frame and a spanning skin. The frame is comprised with opposed straight ends and contiguous opposed rolled sides. The panels are constructed and arranged to be interconnected at straight ends by connectors to form the drum cylinder having opposed annular cylinder edges defined at rolled sides. The first drum head is connected by one connector to one annular cylinder edge. A second drum head is connected by one connector to other annular cylinder edge, and a rotational drive system is used for rotating the drum cylinder. Each baffle bar is secured at the straight ends between adjacent panels using one of the connectors. The drum cylinder is formed by two adjacently positioned sub-cylinders, and each drive tire is positioned between two sub-cylinders. The tangential rotational drive system is comprised of a base, and the drive motor is supported on the base. The gearbox driven from the motor, and the contact wheel driven from the gearbox is contacted with the drive tire. Two pairs of rotational drive systems each pair positioned on either side of a bottom of drive tire with each pair for engagement with a different drive tire. The different drive tire is spacedly arranged along the drum cylinder. The drum cylinder is comprised with outwardly protruding legs, and connectors include several non-hot-welded connectors positioned in holes in drum cylinder and extended through outwardly protruding legs such that the non-hot welded connectors are fully outside of the interior of the drum cylinder. Spanning skin is rolled flat, and iron is comprised with legs which are permanently attached to the spanning skin. Second legs are protruded outwardly from a convex surface of the spanning skin. The connectors are comprised with several non-hot-welded connectors which are positioned in holes in the drum cylinder and extended through outwardly protruding legs such that the non-hot welded connectors are fully outside of the interior of drum cylinder. Each baffle bar is secured at the straight ends between adjacent panels using the connectors, and so that each baffle bar is extended longitudinally of the drum cylinder.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the rotating drum.    Drum (110)    Tangential rotational drive system (130)    Base (182)    Loading apparatus (186)