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A Perfect Crown Molding With Your Saker Protractor
11.27.2021 | Samantha | Saker Miter Saw Protractor
  1. Measure the corner near the ceiling. Note the Miter Cut value from the dial (inner scale).
  2. Determine the spring angle (information available where you purchase your crown molding stock).
  3. Refer to the compound cut conversion table (see back). MM Locate the row with the same "Miter Cut" value as your corner measurement.
  4. Note the "Miter Angle" and "Bevel Angle" from the row that corresponds to the spring angle of your work piece stock (38°or 45°).
  5. Refer to the table below and carefully set the miter angle and bevel angle on your compound miter saw, then position your work piece with reference to the blade and fence, as indicated. Then, cut your first work piece.
  6. Reset the saw and position your second work piece as indicated by the table below. Then, cut your second workpiece.

The two work pieces should align perfectly for you crown molding.

Settings and Layout to Cut Crown Molding with a Compound Miter Saw

 

Inside Corner

Left Piece

Right Piece

Miter Swing: Right

Miter Swing: Left

Bevel Swing: Left

Bevel Swing: Left

Work Piece Location: Left of Blade

Work Piece Location: Left of Blade

Molding Edge Against Fence: Top

Molding Edge Against Fence: Bottom

 

Outside Corner

Left Piece

Right Piece

Miter Swing: Left

Miter Swing: Right

Bevel Swing: Right

Bevel Swing: Right

Work Piece Location: Right of Blade

Work Piece Location: Right of Blade

Molding Edge Against Fence: Bottom

Molding Edge Against Fence: Top

 

Compound Gut Conversion Table

 

Miter Cut

38°Crown Miter I Bevel Angle Angle

45°Crown Miter I Bevel Angle Angle

Miter Cut

38°Crown Miter I Bevel Angle Angle

45°Crown Miter I Bevel Angle Angle

1

0.6

0.8

0.7

0.7

31

20.3

23.9

23.0

21.4

2

1.2

1.6

1.4

1.4

32

21.0

24.7

23.8

22.0

3

1.9

2.4

2.1

2.1 33

21.8

25.4

24.7

22.7

4

2.5

3.2

2.8

2.8

34

22.6

26.2

25.5

23.3

5

3.1

3.9

3.5

3.5 35

23.3

26.9

26.3

23.9

6

3.7

4.7

4.3

4.2

36

24.1

27.6

27.2

24.6

7

4.3

5.5

5.0

4.9 37

24.9

28.3

28.1

25.2

8

5.0

6.3

5.7

5.7

38

25.7

29.0

28.9

25.8

9

5.6

7.1

6.4

6.4 39

26.5

29.7

29.8

26.4

10

6.2

7.9

7.1

7.1

40

27.3

30.4

30.7

27.0

11

6.8

8.7

7.8

7.8 41

28.2

31.1

31.6

27.6

12

7.5

9.4

8.6

8.5

42

29.0

31.8

32.5

28.2

13

8.1

10.2

9.3

9.2 43

29.9

32.5

33.4

28.8

14

8.7

11.0

10.0

9.9

44

30.7

33.2

34.3

29.4

15

9.4

11.8

10.7

10.6 45

31.8

33.9

35.3

30.0

16

10.0

12.5

11.5

11.2

46

32.5

34.5

36.2

30.6

17

10.7

13.3

12.2

11.9 47

33.4

35.2

37.2

31.1

18

11.3

14.1

12.9

12.6

48

34.4

35.9

38.1

31.7

19

12.0

14.9

13.7

13.3 49

35.3

36.5

39.1

32.3

20

12.6

15.6

14.4

14.0

50

36.3

37.1

40.1

32.8

21

13.3

16.4

15.2

14.7 51

37.2

37.8

41.1

33.3

22

14.0

17.2

15.9

15.4

52

38.2

38.4

42.2

33.9

23

14.7

17.9

16.7

16.0 53

39.3

39.0

43.2

34.4

24

15.3

18.7

17.5

16.7

54

40.3

39.6

44.2

34.9

25

16.0

19.5

18.3

17.4 55

41.3

40.2

45.3

35.4

26

16.7

20.2

19.0

18.1

56

42.4

40.8

46.4

35.9

27

17.4

21.0

19.8

18.7 57

43.5

41.4

47.4

36.4

28

18.1

21.7

20.6

19.4

58

44.6

41.9

48.5

36.8

29

18.8

22.5

21.4

20.1 59

45.7

42.5

49.6

37.3

30

19.6

23.2

22.2

20.7

60

46.8

43.0

50.8

37.8