Publicité
Les langues disponibles
Les langues disponibles
Rules of Operating Speeds
The best way to determine the correct speed for work on any material is to
practice for a few minutes on a piece of scrap, even after referring to the
Speed Dial Settings tables. You can quickly learn that a slower or faster
speed is more effective just by observing what happens when you make a
pass or two at different speeds.
When working with a scrap piece of plastic, start at a slow rate of speed and
increase the speed until you observe whether the plastic is melting at the
point of contact; reduce the speed slightly to get optimum working speed
without melting the workpiece.
Certain materials, some plastics for example, require a relatively slow speed
because at high speed the friction of the tool generates heat and causes the
plastic to melt.
Slow speed operation (15,000 RPM or less) is usually best for polishing
operations using the felt polishing accessories, delicate wood carving and
fragile model parts. All brush applications require lower speeds to avoid wire
discharge from the holder. Allow the tool to do the work for you when using
lower speed settings.
Higher speeds are better for drilling, carving, cutting, routing, shaping, and
cutting dadoes or rabbets in wood. Hardwoods, metals and glass also
require high speed operation.
NOTE:
Plastic and materials that could melt at low temperatures should be cut
at low speeds.
Soft wood should be cut at high speed.
Aluminum, tin, copper, lead, and zinc alloys may be cut at any speed,
depending on the type of cutting being done. Use paraffin or other
suitable lubricant on the cutter to prevent the cut material from adhering
to the cutter teeth.
- 12 -
Publicité
