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the injection process seems ok...already done a variation in injection parameters on underpacking ideea...no result... we will insist now on material properties. thanks to all...keep you in touch:)

Problem: - textured area of the parts(ABS)is more shiny than a few weeks ago(all 4 cav.); - mold was checked:- cavities textured surface, air vent,etc... I believe that is an injection process problem...injection speed,packing time? can anyone give me a hint?Thanks.

you're sure about the gate diameter of all 4 cavities? Did you measure with a cilindrical gauge pin the gate diameters? Please do this first:)

Thanks...but im also interested in some classes on Nastran or Ansys(or equivalent)and certification or diploma released after a final exam.

hy, im about to take a course on FEA on www.asme.org and im about to spend 700 $.Is anyone taken already such a class,can i trust this,it's worth it? Can you give me another directions to take an online course on fea? Thank you.