Friday, June 12, 2009


I added the lower railing on the first precipitator unit.  Ladders are installed but still need cages.  I also fabricated and installed one of the main pipe supports.  This is fairly typical of the prototype practice at Bethlehem and I will need to build at least a few of these.  Assembly is pretty straightforward, just repetitive.  The four main verticals are .080 styrene angles with .060 square horizontals and .040 square diagonals.  Of course in the prototype all the structural shapes are angles, however, I can't get an angle less than .060 and even that is very flimsy.  The attachment rings on the main pipe were made from two layers of .030x.040 styrene.   

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