Bosch Power Tools 3725DEVS, 3727DEVS manual Tool Tips, Variable Speed with Dial Setting

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TO UNLOCK THE TRIGGER: squeeze trigger and release it without depressing the "Lock- ON" button.

If the “Lock-ON” button is

!WARNING continuously being depressed, the trigger can not be released.

VARIABLE SPEED WITH DIAL SETTING

Your sander is also equipped with a variable speed dial. The sander's orbital pad speed can be preset from zero to maximum nameplate OPM by rotating the dial in the housing. The dial may be set on or between any of six positions (1=low through 6=high). The "Lock-ON" button may also be used with any setting of the dial.

The following table may be used as a general guide for abrasive and backing pad selection, but the best results will be obtained by sanding a test sample of the workpiece first.

FRONT HANDLE

Your sander is equipped with a removable front handle when sanding in tight quarters. To remove handle, remove screw with allen wrench. Always reinstall handle for normal

operation. Depending on the task, you may grip the rear handle alone, the rear handle and the front handle, or the rear handle and the top of the ergonomically contoured soft grip motor housing, which is designed for that purpose.

Switch Backing Grit

Material setting pad size

rough/finishrough/finish

woods:

 

 

 

 

softwoods

4 / 6

extra soft

60

/ 240

hardwoods

4 / 6

soft

60

/ 180

veneers

4

soft

240

/ 320

metals:

 

 

 

 

steel

4

soft

60

/ 240

stainless

4

soft

120

/ 240

aluminum

4/ 6

soft

80

/ 240

rust spots

6

extra soft

60

/ 120

paintwork:

 

 

 

 

sanding

2 / 3

soft

180

/ 400

scratches

4 / 6

hard

120

/ 240

stripping

4

soft

40/60 /80

Tool Tips

SANDING: open-coat aluminum oxide sanding discs are recommended for most wood or metal sanding applications, as this synthetic material cuts quickly and wears well. Some applications, such as plastics, glass, or stone require silicon carbide discs, which have a very sharp cutting edge. For best results, use Bosch sanding and polishing accessories which are of superior quality and are carefully selected to produce professional quality results with your sander.

With the workpiece firmly secured, depress switch while applying the pad to the work surface. DO NOT apply excessive pressure as this will slow the pad action, and DO NOT start the tool and bring it up to speed before applying to the work; swirl marks will result in either case. In general, higher speeds and moderate pressure will give the best results. If faster removal is desired, DO NOT INCREASE PRESSURE ON THE TOOL; use a coarser grade of abrasive. Move the sander in long

sweeping strokes, parallel to the grain using some lateral motion to overlap the strokes by as much as 75%. The random orbit action allows cross-grain sanding, but be careful not to tilt the sander near edges, or undesirable rounding may result.

If the surface is rough, begin with coarser grits and then complete the surfacing with medium and fine abrasives. Because the random orbit action is so effective, it is often possible to begin sanding with a medium grit disc and go directly to fine finishing. To avoid uneven results, do not skip more than one grit size when going from coarser to finer, and do not sand in one area for too long. When the job is completed, release switch, and gently lift the tool from the work surface at the same time.

POLISHING: for most polishing, the soft backing pad will give the best results. The random orbit sander may be fitted with a foam buffing pad or polishing bonnet to polish or remove scratches from painted or finished

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Contents Importante Power Tool Safety Rules Work AreaSafety Rules for Orbital Sanders Tool Use and CarePage Symbols Functional Description and Specifications Random Orbit SanderAssembly Operating InstructionsVariable Speed with Dial Setting Tool TipsMaintenance ServiceAccessories Règles de Sécurité Générales Aire de travailSécurité électrique Sécurité des personnesConsignes de sécurité de la ponceuse à orbite aléatoire RéparationLe plomb provenant des peintures à base de plomb Symboles Description fonctionnelle et spécifications Ponceuse à orbite aléatoireAssemblage Consignes de fonctionnementPoignée Avant Conseils pratiquesVariateur DE Vitesse À Cadran Nettoyage MaintenanceEntretien Accessoires Normas de seguridad para herramientas mecánicas Area de trabajoSeguridad eléctrica Seguridad personalNormas de seguridad para lijadoras de órbita al azar ServicioPage Símbolos De Ni-CdDescripción funcional y especificaciones Lijadora de órbita al azarEnsamblaje Instrucciones de funcionamientoConsejos para la herramienta Mango DelanteroMantenimiento Lubricacion DE LAS HerramientasEscobillas DE Carbón RodamientosAccesorios Zapata de soporte duraPage Remarques Notas Limited Warranty of Bosch Portable and Benchtop Power Tools
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