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Suggested Mandrel Wash-Out Procedures

Steam is the best way to wash out the mandrels.  A steam cleaner with a hose wand is the most economical way.

  1. Position hose around periphery between mandrel and duct until mandrel dissolves enough to slide mandrel out if shape allows.
  2. A wash-out tank should be made for this purpose.  Once the compound is washed out, the sediment will settle to the bottom of the tank.  This sediment can be scooped out and placed in the garbage as it is not toxic.  The water can be filtered and released into the normal sewer system.
  3. Once water reaches the compound or mandrel, as the compound is hydroscopic, the compound is no good and must be destroyed