Record Power BM16, Instruction Manual, Page: 9 / 18

8 9
1) Introduce the chisel into the adaptor collar, (Pic 4) press the auger up into
the chuck.
2) Tighten the chuck and withdraw the chuck key. Gently pinch the chisel in
place by finger tightening the clamping bolt. (See Pic 5)
Please Note
Various morticing machines require various bit shank lengths. A new bit has a
shank of universal length which will be longer than needed. The shank of the
bit is unhardened so it can be simply cut to length using a hacksaw.
Carefully determine the necessary length, ensuring there is sufficient shank
length to securely fix it into your machine chuck when set up with the correct
clearance between chisel mouth and nose bit.
The correct setting of chisels and bits is vital for successful mortice cutting
and long tool life.
Place the chisel into its socket in the chisel holder then put a coin about
1/16” (1.5mm) thick between the chisel shoulder and the chisel holder face
to prevent the chisel being pushed fully home (see Pic 6) and tighten the
chisel securing screw.
Put the bit into the drill chuck. Push it as far as possible into the chisel and
secure the bit in the chuck. Loosen the chisel securing screw, remove the coin
then push the chisel fully home in the chisel holder socket. Re-tighten the
chisel securing screw.
This setting will allow sufficient clearance for the bit to run smoothly in the
chisel and cut just ahead of the chisel. This set up allows the chips to pass
inside the chisel body and exit through the slot in the chisel side. Position the
chisel so that the chips are emptied into a previously cut part of the mortice
(see Pic 6) .
Ensure the correct clearance between the chisel and bit is always maintained.
Ensure the chisel and bit are securely held in the chisel holder and chuck.
If the bit is not tightly secured it may move up into the mouth of the chisel
during use. The side lips of the bit will rub against the chisel, the wood chips
will not be able to pass up the inside of the chisel and out through the side
slot. This will eventually cause the chisel to break.
It is recommended that for best results only Record Power chisels and bits
should be used in this machine.
WARNING: Ensure chuck key is removed from chuck before switching ‘ON’
machine. Failure to do so could result in ejection of chuck key leading to
personal injury of the operator.
Pic 4
Pic 5
7b. Assembly - Chisel and Bit
Clamping
Bolt
Hollow Chisel
Pic 6
Chuck Key
Chisel and Bit