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Abrasives

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Remove any rough areas of finish. Types of sanders Portable belt sander. For aggressive or rough sanding Types of sanders Orbital sanders, ... – PowerPoint PPT presentation

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Title: Abrasives


1
Abrasives
2
Todays common types of sand paper
  • Garnet common for wood working.
  • Aluminum oxide for metal.
  • Silicon carbide wet or dry applications

Garnet
Aluminum oxide Silicon
Carbide
3
What type of sand paper is made for use on wood?
  • A. Silicon carbide
  • B. Garnet
  • C. Aluminum oxide

4
Grit size
  • Begin with coarse paper, and work up to finer
    grits.

80 100 120
150 180 220
320
Coarse
Smooth
5
The larger the number the smaller the grit size.
  • The smaller the number the larger the grit size.

6
Which number represents the most coarse grit.
  1. 180
  2. 80
  3. 100
  4. 120

7
Use coarse paper for rough sanding 80 to 100 grit
  • For heavy sanding.
  • To remove machine marks.

8
Use medium grit for final sanding of wood. 120,
150, or 180 grit
  • Breaking edges
  • Removal of scratches

Breaking Edges
9
Use Fine grit for sanding between coats of
finish. 220, 320 grit
  • Sand lightly between coats of finish.
  • Remove any rough areas of finish.

10
Types of sanders
  • Portable belt sander.
  • For aggressive or rough sanding

11
Types of sanders
  • Orbital sanders, ½ and ¼ sheet
  • For medium to fine sanding

12
Types of sanders
  • Random orbit, Pneumatic and electric.
  • For swirl free sanding of wood .

13
Which sander is used for course sanding?
  1. Random orbit sander
  2. Portable belt sander
  3. Orbital sander

14
Types of sanders Stationary
  • Wide belt sander
  • For sanding machine marks out of surface of wood
    panels

15
Types of sanders Stationary
  • Edge belt sander
  • For straight edges of boards and outside
    radiuses.
  • Use caution, this machine can remove material
    quickly

16
Types of sanders Stationary
  • Disc Sander
  • For outside curves and short straight edges.

17
Types of sanders Stationary
  • Oscillating spindle sander
  • For inside curves or radiuses.

18
Which of these sanders can sand inside radiuses?
  1. Disk sander
  2. Edge belt sander
  3. Oscillating spindle sander
  4. Wide belt sander
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