KNOVA KN MS-625A Manual página 5

OPERATION
1. Set depth stop to the required depth of cut. See Figure 4.
Headstock
stop
Depth stop
Headstock
stop
2. Place workpiece on table and clamp it with the vise.
Use the left handwheel to move table forward or backward
to suit the position of the mortise on the workpiece.
3. Adjust the table stops, Figure 5, according to the length
of cut required, then tighten the thumb screws
Table stop
Table
4. Turn on machine and feed chisel and bit steadily into
workpiece by pulling down the operating handle.
NOTE: The rate of feed must be fast enough to prevent
burning at the tip of the bit, but not so fast as to cause
the machine to slow or stall. The different rates of feed
for different woods must be learned through experience.
MAINTENANCE
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.
Headstock
Figure 4
Table stop
Work stop
Figure 5
4
5. After the first cut, the workpiece is moved along with
the right handwheel for each successive cut.
The direction of movement must allow the chips to clear
freely. Move the workpiece so that the slot in the chisel
is releasing chips into the already cut part of
the workpiece. See Figure 6.
Chisel slot
on left
Move workpiece
this direction
Figure 6
CAUTION: Do not have the chisel slot against the blind
end of the mortise, as the chips will not be able to clear
the chisel. This can cause overheating and possible
breakage of chisel or bit.
File inner
edge of spur
When cutting deep mortises, make the cut in several stages
of approximately 1" each, to allow chips to clear.
To prevent breakout at the back of the workpiece when
cutting through mortises, use a piece of scrap material
under the workpiece as support.
SHARPENING CHISEL & BIT
The chisel and bit should be kept sharp for best performance.
Blunt edges will give inaccurate mortising 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.
Chisel slot
on right
Move workpiece
this direction
File sides of
brad point
File cutting
edge
Figure 7