Remington 490 - Manual (Page 7)

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3. NEVER make fastenings in spalled or cracked areas.
2. NEVER attempt to drive power fasteners into very hard or
brittle materials including, but not limited to cast iron, glass,
tile, stone, brick, or hardened steel. Materials of this type
tend to shatter and create hazard from flying particles.
4. NEVER drive power fasteners into thin or easily penetrated
material unless it is backed by concrete or steel. When in
doubt, such as when base material is concealed, conduct
a Center Punch Test (See page 6). Check continually to
avoid fastening into unsuitable material, especially in older
buildings.
5. DO NOT fasten through or within 1/2" of predrilled or pre-
punched holes.
489-27
482-32
CAST IRON GLASS
TILE BRICK
482-33
Safety Precautions