Adjusting The Contact Between The Knife And The Cutting Block - Brother RH-9800 Instruction Manual

9. STANDARD ADJUSTMENTS

9-11. Adjusting the contact between the knife and the cutting block

1. Knife incision
2. Knife incision
is correct
is too deep
19 mm
3 mm
Adjusting the contact between the knife and the cutting block
To see the knife incision more easily, color the cutting surface of the cutting block with a marker pen.
1. Operate the cutting block three times with the knife making a mark on it each time.
2. Adjust the position of the cutting block or contact between the knife and the cutting block until the knife consistently
makes a mark in the same place.
Filing the cutting surface of the cutting block
Use a flat file for filing.
1. Filing the cutting surface of the cutting block on which the knife incision breaks off or is shifted
1-1. Grip the cutting block in a vise.
1-2. File the surface of the cutting block smoothly until the knife incision is eraced away.
2. Filing the cutting surface of the cutting block in which knife incision is deep
2-1. Grip the cutting block in a vise.
2-2. File the surface of the cutting block smoothy until a single knife incision can still be seen faintly.
50
0971Q
3. Two knife 4. Partial knife
incisions incision
0972Q
RH-9800
1. Remove the cutting block. (Refer to the previous
page.)
2. If the knife incision on the surface of the cutting block
is very deep, if there are two or more incisions on the
cutting block because different knives were used, or if
only part of the incision has been made, grind the
surface of the cutting block smoothly until a single
knife incision can still be seen faintly.
3. The cutting pressure over the whole of the cutting
block should be uniform so that the material will be cut
cleanly.
Grind the surface of the cutting block so that the knife
incision will be uniform over the whole of the cutting
block.
* The cutting block can be filed until its height is 19
mm.
4. If the material cannot be cut cleanly even though
the cutting block has been ground correctly,
check whether the tip of the knife is worn.
* If the tip is worn, replace the knife.
Do not use the old cutting block after the knife has
been replaced, otherwise it may damage the tip of
the knife.