Barry:
     
     We have tried both ways you have described.  Some companies 
     reflow their SMT components and still run across the wave 
     solder machine to solder the PTH components.  Many are 
     trying intrusive soldering/Pin-in-hole and reflow both SMT 
     and through hole.  
     
     Covering the SMT with a fixture while soldering the through 
     hole is called selective soldering.  To successfully 
     selective solder certain design guidelines must be followed. 
     If you decide to try selective soldering I would recommend 
     contacting Eric Miller at S.P. Precision International, 
     Ltd., in Forest Grove, OR., 97116, Tel (800) 725-5388.  They 
     have assisted us in the past.  They also manufacture 
     selective soldering fixtures as well as other types.  Hope 
     this helps.  Merry Christmas and Happy New Year!!!!

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