In my 24 years I have worked with four IS pumice machines.
They are durable as claimed.  I recommend them as best in class.

I would caution the buyer to not rely on their rinsing.  The high pressure
rinse system uses a noisy pump with seals that can blow out and soak
the entire machine with oil.  Don't buy that option.  The remaining rinse
systems are minimally effective.  I recommend you install a triple sump,
rinse and dry system after, maybe something from ASI or Chemcut or
equivalent.

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