Workpiece Support - Bosch 4412 Operating/Safety Instructions Manual

Basic Saw Operations
Long workpieces have a tendency to
WARNING
!
tip over unless clamped down and
properly supported from underneath.
Clamps
Quick-Action Clamp - This clamp easily secures a
workpiece in either of two (2) clamp holes behind the
fence (Figure 19).
— Minimum of 1/2" of knurl must engage clamp post
to be effective.
— Adjust screw if necessary to clear fence or for
large differences in wood heights.
— With clamp in open (lever raised) position, insert
clamp into clamp post until rubber foot comes into
contact with material.
— Press down on lever to tighten clamp.
— Move the head assembly to check clearance with
clamp.
— Pull up on lever to release clamp.
There may be extreme compound
WARNING
!
cuts where clamp cannot be used.
Support workpiece with hand outside No Hands
Zone. Do not try to cut short pieces that cannot be
clamped and cause your hand to be in the No Hands
Zone.
Quick-Action
Clamp
Clamp
Post
Clamp
Hole
Screw Rod
Figure 19. Quick-Action Clamp
Horizontal Clamp – The optional MS1221 Horizontal
Clamp and crown stop can be mounted on either side
of the tool and holds the workpiece firmly against the
fence.
Conventional Clamps – and other hold down
devices can be used to hold the workpiece firmly
against the table and the fence.

Workpiece Support

Sliding Base Extensions – These extensions pro-
vide extra workpiece support and are especially use-
ful when cutting long workpieces. To reposition the
extensions, simply unlock the Base Extension
Clamping Levers, reposition the extensions, and re-
lock the levers (Figure 20). (See also Length Stop on
page 27.)
Extra-Long Base Extension Rods – The optional
MS1222 Base Extension Kit allow the 4412's base
extensions to extend out to 60". Even after these
longer rods are installed on the 4412, the base exten-
sions can be fully retracted for transportation and
storage.
Sliding
Extensions
Blocks - Long pieces need extra support. The base
height (3-3/4") is designed to match the standard
Clamp
lumber of two 2x's and one 1x. Boards of these thick-
Hole
nesses can be used to create auxiliary support exten-
sions for long workpieces (Figure 21).
Two 2x's
and One 1x's
20.
Long workpiece support
Base
Clamp Levers
Figure 20. Sliding Base Extensions
Figure 21. Block Support