BM16 10
MAINTENANCE AND SERVICE
Maintenance and Service
The Mortiser requires only minor maintenance,
such as cleaning and lubrication and routine
adjustment and sharpening of the chisel and bit.
Dust the machine down after each use and, as
necessary, use light applications of oil or grease
to lubricate linkages, moving parts, etc.
SHARPENING CHISEL & BIT
The chisel and bit should be kept sharp for best
performance. Blunt edges will give inaccurate
mortises and can lead to overheating and
breakage to chisel or bit. If chisel and bit are
badly worn and become difficult to sharpen,
they should be replaced.
1. Sharpen the bit by using a small, smooth file,
following the original shape of the bit. File the
inside edge of the spur, the sides of the brad
point, and the cutting edge inwards toward the
flute of the bit. See Fig. 8. Do not file the outside
edge of the spur as this will affect the diameter
of the bit.
2. Sharpen the chisel with a mortise chisel cutter
with the correct size pilot. (Pilot size will differ
depending on the size of your chisel). Two or
three turns of the cutter in a carpenter's brace
chuck should be enough to sharpen the chisel, as
shown in Figure.
3. Use a small, triangular, smooth file to relieve
the inner corners of the chisel. See Figure. Remove
any burrs from the outside of the chisel with a fine
oilstone.
