Bosch 1594 Operating/Safety Instructions Manual page 10

RESHARPENING HSS BLADES
Worn or dull HSS plane blades can be re-
sharpened. The optimal blade angle of 50º
should be maintained when sharpening.
Once a total of 6 mm of steel has been
removed from tips of the blades, both blades
must be replaced because the minimum
HSS blade height is 23 mm from back to tip.
LEVELING OF HSS BLADES
A PA1206 HSS Blade Leveling Fixture
(optional accessory) is required to level new
or resharpened HSS blades. (Not necessary
with the PA1204 HSS Blades and Retainers,
which are leveled at the factory.)
1. Place the blade and blade retainer on the
leveling fixture and make sure that the
blade retainer engages in the grooves
intended for this purpose. (Fig. 9)
2. Press the plane blade against the stop in
front of the cutting edge to achieve the
proper depth and evenness (levelness)
and with the blade retainer in this position
and tighten it with the locking screws. This
will automatically adjust the blade to the
correct height and levelness.
3. Tighten the retainer screws.
4. Remove blade and retainer assembly from
the leveling fixture.
5. Repeat the procedure for the second
blade.
BLADE
LEVELING
FIXTURE
BLADE
RETAINER
-10-
FIG. 9
HSS
BLADE