OPERATION
Do not sand too long in one spot. This will cause uneven sanding and gouging of the work.
Upon completion of a sanding operation, lift tool away from work surface before turning off.
WARNING:
Sanding disc must come to a complete stop before setting tool down on workbench. Failure to do so can cause the tool to be thrown from workbench because of sanding disc rotation. This could result in damage to the tool or possible serious injury to the operator.
SANDING DISC SELECTION
Selecting the correct size grit and type sanding disc is an extremely important step in achieving a high quality sanded finish. Aluminum oxide, silicon carbide, and other synthetic abrasives are best for power sanding. Natural abrasives, such as flint and garnet are too soft for economical use in power sanding.
In general, coarse grit will remove the most material and finer grit will produce the best finish in all sanding operations.
The condition of the surface to be sanded will determine which grit will do the job. If the surface is rough, start with a coarse grit and sand until the surface is uniform.
Medium grit may then be used to remove scratches left by the coarser grit and finer grit used for finishing the surface.
Always use the proper grit sanding disc, and not extra pres- sure when sanding. Continue sanding with each grit until surface is uniform.
INSTALLING/REMOVING POLISHING BONNET
See Figure 13.
Before installing the polishing bonnet, the rubber disc must be installed on the tool. If the grinding wheel and guard are on the tool, they must be removed first. Follow the steps in Installing Rubber Disc before proceeding.
Unplug the tool.
Remove sanding disc, if necessary.
rubber disc
POLISHING |
|
BONNET | Fig. 13 |
Securely retighten spanner nut with the wrench provided, if necessary.
Slip polishing bonnet over rubber disc.
Pull string ends tight and tie in a bow to secure bonnet.
Tuck string ends and bow underneath bonnet.
WARNING:
Failure to tuck string ends and bow underneath bonnet could result in string ends coming loose and hitting or grabbing foreign objects.
To remove, untie string and pull polishing bonnet edges over and off rubber disc.
To reinstall the grinding wheel after sanding or polishing, see Replacing Grinding Wheel and Replacing Guard in the Maintenance section of this manual.
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