Hard-
Surfacing,
Building
Fusion
Welding
Carbon
Welding
Non-Ferrous
Metals
Heating
& Heat
Treating
Braze
Welding
Welding
Cast Iron
Welding
Ferrous
Metals
Brazing
&
Soldering
Equipment
Set-Up
Operation
Equipment
For
OXY-Acet
Structure
of
Steel
Mechanical
Properties
of Metals
Oxygen
&
Acetylene
OXY-Acet
Flame
Physical
Properties
of Metals
How Steels
Are
Classified
Expansion
&
Contraction
Prep
For
Welding
OXY-Acet
Welding
& Cutting
Safety
Practices
Manual
Cutting
Oxygen
Cutting By
Machine
Appendices
Testing
&
Inspecting
21
Friction Lighters
ALWAYS use some type of friction lighter
to light your torch. NEVER use matches. Dont even have them on your
person when welding or cutting. Friction
lighters are cheap and easy to use. A three flint lighter, which carries two
reserve flints all mounted and ready
for use, makes a lot of sense. Mechanical
Accessories Good
workmanship is difficult without a suitable place to work. For welding, you need
some kind of a sensibly- designed,
100% fireproof work table. A table with a slotted cast iron top, as illustrated
in Fig. 5-17, is ideal for many purposes.
The slots allow you to position C-clamps at almost any work-holding position desired.
You can make up a
somewhat similar table from steel angles and strips with the top framed and fitted
with supports for holding loosely-set
fire bricks. For
lining up parts, youll normally need a couple of heavy steel straight- edges,
and some V-blocks, which can be supplied
by any dealer in machinist supplies, or machined from steel 1-1/2-in. or 2-in.
thick. For bevelling
the edges of parts to be welded, anything from a course file to a power grinder
may be needed. When
steel 1/4-in. or more in thickness is to be welded, you can often bevel it with
the cutting torch or attachment. Wire
brushes are always needed. Fig.
5-17. Friction lighter (above) and welding table
with slotted cast iron top (right).