Larry:
     The criteria we used to in wave solder machine selection were
     repeatability, control, ease of maintenance, and the ability to
     eliminate fixturing.  Obviously there is more to be evaluated than
     just the above criteria, however, these were very important in our
     selection criteria.

     Other factors to consider:
     1.  Volume
     2.  Space requrements
     3.  PWB technology (PTH or Mixed)
     4.  Flux Technology (RMA, Water Soluble, No-clean/Low-residue),
         Preheat requirements (IR, Calrod, or Convection will make a
         difference depending on PWB design and flux type now and in the
         future),
     5.  Nitrogen requirements
     6.  Masking requirements
     7.  Conveyor Finger style requirements
     8.  Hot Air Knife requirement
     9.  Emissions of the machine
     10. Exhaust requirements
     11. How will this machine fit into your  organizations future plans.
     12. Cost.  Be careful trying to save dollars and buy something that
         will not fit your requirements.
     13. On/Off loading requirements
     14. Machine Control (Manual/PID/Computer)
     15. Training
     16. Supplier Support

     I can't think of anymore right now, but I am sure there are probably
     other consideration.  Hope this helps.  The top four characteristics I
     mentioned and the other 16 were used to evaluate and purchase a new
     Dover Soltec Delta Wavesolder machine during this past year.  The
     machine is online and doing an excellent job.

     If you have other questions contact me offline at the address below.

     Ron Hollandsworth
     [log in to unmask]

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