Cutting Base Moldings; Cutting Crown Molding - DeWalt DW718 Instruction Manual

Example: Tomake a4 sided box with 26 °exterior angles
(Angle A , Figure 15),usetheupper r ight a rc.Find26 °
onthearcscale. F ollow thehorizontal intersecting line
to either s ideto getmiter angle setting onsaw(42°).
Likewise, follow thevertical intersecting line tothetopor
bottom to getthebevel a ngle setting onthesaw(18°).
Always t rycutsonafewscrap pieces o fwood toverify
settings onsaw.
CUTTING BASE MOLDING
ALWAYS MAKEA DRYRUNWITHOUT POWER
BEFORE MAKING A NY CUTS.
Straight 90 °cuts:
Position t hewood against thefenceandholdit in
place asshown inFigure 11. T urnonthesaw, a llow
the bladeto reach full speed andlower the arm
smoothly through t hecut.
CUTTING BASE MOLDING UPTO6.5"(165 ram) HIGH
VERTICALLY AGAINST THE FENCE
Position material asshown i nFigure 1 1.
Allcutsmade withtheback ofthemolding a gainst the
fence and bottom ofthemolding against thebase.
INSIDE C ORNER:
Left s ide
1. Miter l eft45 °
2. Save leftside ofcut
Right side
1. Miter R ight 45 °
2. Save right s ide ofcut
OUTSIDE CORNER:
Left s ide
1. Miter r ight a t45 °
2. Save leftside ofcut
Right side
1. Miter l eftat45 °
2. Save right s ide ofcut
Material upto 6.5"(159 mm)canbecutas described
above.
CUTTING CROWN M OLDING
Yourmiter sawis better s uited to thetaskof cutting
crown molding than anytool m ade. Inorder tofitproperly,
crown molding must b ecompound mitered w ithextreme
accuracy.
Thetwoflatsurfaces ona given piece ofcrown molding
areat angles t hat, w hen added together, equal e xactly
90 °.Most, butnotall,crown m olding hasatoprear a ngle
(the section t hatfitsflatagainst theceiling) of52 °anda
bottom rearangle (thepart t hatfitsflatagainst thewall)
of38 °.
Yourmiter s awhasspecial pre-set miter latch points a t
31.62 °leftand right forcutting c rown m olding attheproper
angle and bevel stop pawls a t33.85 °leftandright. There
isalso a mark ontheBevel scale at33.85 °.
FIG. 17
FENCE
TABLE
CROWN MOLDING FLAT ON TABLE
AND AGAINST FENCE
FIG. 18
BOTTOM SIDE
OF MOLDING
DW 7O84 CROWN
MOLDING FENCE
TABLE
CROWN MOLDING BETWEEN FENCE AND TABLE
The chart below gives the proper settings for cutting
crown molding. (The numbers for the miter and bevel
settings are very precise and are not easy to accurately
set on your saw.) Since most rooms do not have angles
of precisely 90 °, you will have to fine tune your settings
anyway.
PRETESTING WITH SCRAP MATERIAL
IS EXTREMELY IMPORTANT!
INSTRUCTIONS FOR CUTTING CROWN
MOLDING
LAYING FLAT AND USING THE COMPOUND FEA-
TURES
1. Molding laying with broad back surface down flat on
saw table (Figure 17).
2. The settings below are for All Standard (U.S.) crown
molding with 52 ° and 38 ° angles.
FIG. 19
BLADE
RIGHT
FENCE
FIG. 20
FENCE
BEVEL SETTING
33.85 ° Left
33.85 ° Right
33.85 ° Right
TYPE OF CUT
LEFT SIDE, INSIDE CORNER:
1. Top of molding against fence
2. Miter table set right 31.62 °
3. Save left end of cut
RIGHT SIDE, INSIDE CORNER:
1. Top of molding against fence.
2. Miter table set at left 31.62 °
3. Save right end of cut
LEFT SIDE, OUTSIDE CORNER:
1. Top of molding against fence.
2. Miter table set at left 31.62 °
3. Save left end of cut
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