Oxygen-Acetylene Welding, Brazing
and High-Temperature Silver Brazing
This ancient spring
clip has been glass beaded but still retains oxidative etching. Gas
welding with ER70-S series filler rod floats out impurities and provides the tensile needed. Gas welding is an
excellent alternative in this case, as TIG or even MIG requires cleaner metal. Broad heat diffusion and proper
cooling will result in a stable, strong piece.
toss out this brake pedal. What if your Jeep 4WD is so old that the pedal is obsolete? This is a restorable
part, as you will see.
First step was thorough glass
bead blasting to remove rust scale and surface impurities. Here, I gas weld a 0.120" piece of mild
steel plate to the backside of the pedal, beginning with tack welds and filler
Gas welding offers ready control of heat.
As you will learn in my step-by-step videos on gas welding, this ability can be an asset. Controlling heat, I
carefully weld the plate and surrounding areas. This pedal face was actually paper-thin in places and required
skilled manipulation of the torch as the filler rod dipped into the molten metal.
After careful welding of the backside, the
reinforced and built up areas provide stability for gas welding dimples of metal atop each worn out button. A
Dremel tool with grinding point serves to sculpt the buttons to their original shape. Jeep restoration work is
artful and rewarding.
Finished welding and reinforcement on the
backside of the pedal is far stronger than OE approach. This pedal should outlast the original by decades. Welding
skill can improve your Jeep 4WD.
Primered with a durable, rust inhibiting
primer, I will finish coat this pedal with a catalyzed epoxy paint for smooth fill and wear
Unseen backside of the pedal is now heavily
reinforced and stable. Gas welding's heat diffusion and a room temperature cooldown produce good tensile for
this application. The filler rod is 70,000 PSI minimum, offering strength and desired
ductility for this application.
A damaged spring clip is cleaned with glass
beading, washed and welded by gas/oxygen-acetylene process. Here, I control the heat and run a filler bead over the
prepared and aligned corner of the bracket.
Here is a unique and useful place for gas welding.
Chrome plated bracket is not a candidate for TIG welding, which requires pure and
spotlessly clean base metal. Thin metal like this would be difficult to
MIG as well. Oxygen-acetylene/gas welding is a solution.
The bead shown is a
reinforcement on the back side. Combined beads make this vulnerable piece much stronger than original
Fine control of heat and a smaller welding tip enable pinpoint
gas welding with practice. These welds look much like TIG. Mastering gas welding is an excellent foundation
for the TIG welding process.
This small machine nut can benefit from gentle tack welding with gas.
Gas welding at this level takes finesse and a strong sense for the base metal, precise control of
heat and the proper, timely fusion of welding rod. Practice can make this possible! Screw holds nut in place
and will preserve the threads as well.