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The above weld cut in half reveals the amount of voids in
the weld. These can be caused by contaminates in the mold,
conductor or weld metal.
Note: A small number pin holes are acceptable, up to 20%.
Inspecting Ultraweld Welds
Bad Welds
13
Weld was not closed properly or it was worn out and leaked
significantly. Also there is too much slag in the weld. Replace
mold if needed.
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UltraShot Troubleshooting
Tips
P
r
oblem
P
ossible
C
a
use
Sug
gested Cor
rections
UltraShot did not
fire
Battery not charged
Charge battery and retry
.
Try dif
ferent battery pack if available.
Igniter not properly connected
to plug
Push
igniter
all
the
way
into
plug.
NUWT
ube Starting
Powder
would
not
ignite
Old
flint
gun
Replace
flint
gun.
Starting powder being used
improperly
Sprinkle starting powder on the side of the l
id’
s ignition pock
et.
W
eld cavity under
fills
W
rong
size
cartridge
for
mold
Check
ID
plate
on
mold
for
proper
size
weld
material
to
be
used.
Mold leaked too much molten copper to make proper weld
W
orn
mold.
Opening
in
mold
is
too
large
to
seal
the
mold
properly
. Replace
mold.
W
rong mold used for the conductors being welded. Buy correct mold.
Mold
did
not
close
completely
. Adjust
handle
clamps
as
needed
to
get
mold
closed
completely
.
W
rong mold being used
Buy correct mold.
14
