Page 14
BLADES
TYPES OF TEAROUTS (continued)
SUBFLOOR SURFACES
• WOOD:
When working over plywood sub-flooring, try to run machine in a 45° angle to the grain in the
wood. Blade in most cases should be bevel down. On solid wood floors, like plank, run 45° to the
plank, not cross grain or cross plank. Removing the front counter weight will help on all soft surfaces.
Rounding off the corners of the blade will help from digging into the floor.
• CONCRETE:
When working on a concrete slab, normal blade position
is bevel up for best performance, especially when cleaning adhesive. On
occasion, bevel down gives better blade life. Test each job for best
performance.
• GIBCRETE AND SOFT POURED FLOORING:
Usually requires blade
bevel down to create a better wearing surface, although bevel up may work if
front counter weight is removed.
EYE PROTECTION SHOULD BE USED AT ALL TIMES.
• GLUED HARD WOOD FLOORING:
A 6" blade is recommended for regular adhesive. For proper
removal of hardwood flooring (parkay laminated, plank laminated, plank solid) flooring must be scored.
This is done by using a circular saw set at a depth of 100% of the thickness of the board, just missing
the subfloor surface when on concrete (See Figure A)
.
A chalk line for scoring lines can be used
across the floor the width of the blade (See Figure B). A ripping guide attached to the saw can be used
to eliminate chalk line marks. Open an area large enough to fit machine or start from a doorway. It is
important to keep all debris cleaned up for maximum performance of machine. True Parkay flooring
scoring is not necessary. It will come up in small pieces.
Figure B
Figure A
CAUTION:
Beware of expansion joints and floor mounted receptacles or other obstacles in the floor.
