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For added efficiency, a vacuum hose and adaptor (optional accessories) are also available which will allow your sander to be connected to a shop vacuum system. See your Bosch catalog for optional Bosch Airsweep accessories. METAL DUST BAG STATIC CLIP FLANGE Sanding Tips “open coat” will not clog or fill as readily as “closed coat”. In general, aluminum oxide SELECTING THE SANDING BELT abrasive belts are best for woodworkingIt is very important that you select the proper because they are tougher and last longer. belt for each particular application. To do this Sanding belts should be stored in a cool, dryyou should understand the method of marking place. Do not store near heat or near a windowor coding on the back of most belts. “CLOSED where the sun can reach them. COAT” means the surface is densely covered TECHNIQUE with as much grit as the adhesive will hold. Grasp the handles firmly. Start the sander with “OPEN COAT” means the grit has been the belt off the work (NOTE: never start or stop applied evenly, but openly to the surface. An -8 BM 2610967913 9/03 9/26/03 4:56 PM Page 9 the tool with the belt in contact with the work surface). Place the heel of the sander on the work first. Then, with a forward motion, begin the sanding stroke as the machine is lowered onto the work surface. This will prevent gouging. Keep the sander moving so that your work will be smooth and even. The stroke is simply a back-and-forth movement with most of the sanding done on the pull movement. Use a light touch. The weight of the belt sander is the only pressure required. Too much pressure will slow the work by overloading the motor and reducing belt speed. The result will be decreased sanding efficiency. Sand slowly and systematically and, when you stop, lift the sander from the surface before stopping the tool. WOOD FINISHING Take care to select belts wisely. For initial smoothing of rough lumber, use coarse or very coarse grit and sand with the grain. On very uneven or hard wood, sand diagonally (across the grain). Be careful to avoid gouging. Now switch to medium grit belt and sand with the grain. This will provide a relatively level and smooth finish. Now insert a fine grit belt for final finishing. Always sand with the grain to remove scratches left by coarser belts. Keep the sander moving in long, light strokes during finishing operations. As a final touch, experienced sanders will often insert a “used” fine belt to provide a smooth surface for filling, sealing, brushing or spraying. REFINISHING COATED WOOD Your belt sander will also help remove old paint, varnish or lacquer; however, if the coating consists of several layers, remove as much as possible with a paint solvent or varnish remover before using the belt sander. Use a hand scraper to remove the residue left by the solvent and allow surface to dry completely before sanding. GUIDE FOR WOOD SANDING OPERATIONS Abrasive Belt Material/Application Open-coat Rough, fast stock 36 to 60 grit removal, removal of old finishes Open-coat Intermediate finishing 60 to 100 grit Open or closed-Fine finishing coat 120 to 180 grit Open or closed-Extra-fine finishing, coat, 200 or especially with hard finer grit woods Remove all sanding dust thoroughly before coating. Use a soft brush or a vacuum cleaner and hose to remove all dust from seams or crevices. For fast removal, start with a coarse grit, open coat belt. Change to closed coat belts, using medium grits as the material shows through the coating. When the covering is thin, use medium grit to avoid scratching the material. Use short, light strokes, moving the sander rapidly. Excessive pressure or steady sanding in one place will burn the coating and load the belt. METAL FINISHING For ferrous metals such as steel, stainless steel, iron, etc., use coarse grit open coat belts or coarse to fine grit closed coat belts, depending on the finish desired. Non-ferrous metals such as aluminum, solder, brass, bronze, etc., can also be sanded. Beeswax or tallow are recommended as lubricants for metal sanding, polishing or satin finishing to minimize belt loading and to lengthen belt life. To use, simply rub the lubricant on the belt from time to time. SAE No. 10 or 20 lubricating oil can also be used to assure a smooth scratch free surface. Just wipe the oil on the surface prior to sanding. -9 BM 2610967913 9/03 9/26/03 4:56 PM Page 10 Maintenance Service Preventive maintenance performed by unauthorized ! WARNING personnel may result in misplacing of internal wires and components which could cause serious hazard. We recommend that all tool service be performed by a Bosch Factory Service Center or Authorized Bosch Service Station. TOOL LUBRICATION Your Bosch tool has been properly lubricated and is ready to use. It is recommended that tools with gears be regreased with a special gear lubricant at every brush change. CARBON BRUSHES The brushes and commutator in your tool have been engineered for many hours of dependable service. To maintai...

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