Flex FX1671 Operator's Manual page 17

BIT BINDING
WARNING
tool securely. Always be prepared for bit
binding and drill reaction.
WARNING
from the bit and all moving parts. If the bit
binds, the drill will suddenly react in the opposite
direction of the rotation of the bit. Reduce the
chances of a sudden reaction by following the
instructions listed below. Prepare for a sudden
reaction by holding or bracing the tool securely.
To reduce the chance of bit binding:
Use sharp bits. Sharp bits are less likely to
•
bind when drilling.
Use the proper bit for the job. There are many
•
types of bits designed for specific purposes.
Keep self-feed bits aligned with the work
•
surface so bits go in straight.
BRACING FOR FORWARD ROTATION
When drilling in forward rotation, the bit will
rotate in a clockwise direction (A). If the
bit binds in the hole, the bit will come to a
sudden stop and the drill will suddenly react
in a counterclockwise direction (B). The motor
housing braced (C) against a stud will hold the
drill in position.
To reduce the risk of
injury, hold or brace the
To reduce the risk of
injury, keep hands away
(FIG. 13)
Avoid drilling warped, wet, knotty, and/or
•
pitchy material if possible.
Avoid drilling in material that you suspect
•
contains hidden nails or other things that may
cause the bit to bind.
The direction of reaction is always opposite of
the direction of bit rotation. Reaction is even
more likely to occur when enlarging already
existing holes and at the point when the bit
breaks through the other side of the material.
If the bit binds:
1. Release the trigger switch immediately.
2. Switch the direction-of-rotation selector to
reverse rotation.
3. Remove the bit from the work and start again.
4. Do not press the trigger switch to attempt to
start a stalled bit. This will damage the drill.
Fig. 13
A
-17-
C
B