Page 14
BLADES
TYPES OF TEAROUTS (continued)
SUBFLOOR SURFACES
• WOOD:
When working over plywood sub-flooring, try to run machine in the same direction as the
grain in the wood. Blade in most cases should be bevel down. On solid wood floors, like plank, run in
the same direction as the plank, not cross grain or cross plank. Removing the front counter weight will
help on all soft surfaces.
• 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 10" blade is recommended for regular adhesive, a 6" blade for
epoxy. For proper removal of hardwood flooring (parkay laminated, plank laminated, plank solid)
flooring must be scored to blade width. This is done by using a circular saw set at a depth of 99% 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.
