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Step 5:
Close lid, remove Orange cap
from starting powder chamber
and sprinkle next to ignition
hole.
Step 6:
Ignite material located on top
of the lid using a flint igniter
(FLTIG).
Step 7:
After the connection is
complete, open the mold and
remove the connection, remove
slag and clean mold before
making the next connection.
Complete NUWTUBE connection
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www.harger.com
7
Inspecting an Ultraweld
Mold
An Ultraweld graphite mold is designed to last an average
of at least 50 shots but can last longer with proper care and
cleaning. Using the UltraShot system has proven to more
than double the life of the mold.
Inspect the mold regularly for the following items:
1. Conductor Openings – The conductors should fit tight
to keep the mold from leaking when fired.
2. Weld Cavity – The weld cavity should be well defined
without large chips or cracks that may effect the weld.
3. Tap Hole – Should be well defined without major chips.
4. Disk Seat – Should be well defined and capable of
sealing the weld metal in the crucible area while the
reaction is taking place.
5. Mold Parting Surface – Needs to be without major
chips or cracks and capable of sealing the reaction in
the mold.
6. Crucible – Should be able to safely hold the reaction.
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www.harger.com
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