Ryobi HT230 manual Discs, Engraving, Cutter, Rubber, Points, Stones, Carbide

OPERATION

To determine the optimum operational speed for different materials and accessories, refer to the Speed Dial Settings table. Look this table over and become familiar with it.

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 table. 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.

NOTE:

Plastic and materials that melt at low temperatures should be cut at low speeds.

Soft wood should be cut at high speed.

Aluminum, tin, and 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.

WARNING:

Wire brushes must never be operated at speeds higher than 15,000 RPM. Wire brushes must run at least one minute before use. During this period, no one should stand in front of or in line with the rotating brush. Failure to heed this warning could result in serious personal injury.

SPEED DIAL SETTINGS

Type of	Soft	Hard	Laminates	Steel	Aluminum,	Shell/	Ceramic	Glass
Accessory	Wood	Wood	Plastics		Brass, Etc.	Stone
Cut-off	25-30	18-30	10-18	10-18	10-30	—	—	—
Discs
Engraving	25-30	25-30	15-25	25-30	10-18	—	—	—
Cutter
Rubber
Polishing	—	—	—	10-15	10-15	—	—	—
Points
Aluminum
Oxide	—	—	10-15	—	10-18	10-18	—	—
Grinding
Stones
Silicon
Carbide	—	—	—	—	10-15	10-15	12-15	10-15
Grinding
Stone
Wire	10-15	10-15	—	10-15	10-15	10-15	—	—
Wheels

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