Delta 31-735 Instruction Manual download pdf (Page 21)

DUST PORT COVER

The abrasive finishing machine is equipped with a

manually operated dust port cover (A) Fig. 52, which

must be adjusted to suit the sanding operation.

1. DISCONNECT MACHINE FROM

POWER SOURCE.

2. If you are sanding with the disc, push in on dust port

cover (A) Fig. 52.

3. If you are sanding on the belt, pull dust port cover

(A) Fig. 53, outward.

Fig. 52

Fig. 53

OPERATIONS

ABRASIVE BELTS & DISCS -

THEIR SELECTION AND USE

Delta supplies a wide range of belts and discs for use on your Belt and Disc Finishing Machine. These belts and discs

are recommended for a wide range of work on wood, metals, plastics and other materials. However, when a large

amount of production work of one kind is to be done, it is best to call in a coated abrasive specialist for specific belt

and disc recommendations.

A wide variety of materials may be processed on a dry belt or disc. But for professional quality or for production work

a low melting point grease should be used for cooler cutting, better finish, and for longer belt life. Even coarse belts

will "load" when grinding aluminum dry, and so a lubricant should always be used for this material. To a varying degree,

this is true of other non-ferrous metals like soft brass and zinc.

A grease stick is often applied to the belt or disc to prevent "loading" of the belt on softer materials especially

aluminum. When grinding steel or some kinds of plastic, the grease stick is often used to prevent over-heating of the

work piece. Many times a single belt is used for both stock removal and for finish, just by lubricating one half of the

belt with light grease for stock removal and the other side or half of the belt with a heavy grease for polishing to bring

out a good finish. This can be done only when the parts are very small and need not be moved across the face of the

belt.

When an abrasive belt smaller than 6" is desired, the 6" belt can be split. This can be done by turning the belt inside

out and with a knife or other sharp instrument cut a slot in the belt at the desired width. Then proceed to tear the belt.

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Delta 31-735 Instruction Manual Page 21