What is 100% Full?

I received this follow-up question regarding a previous blog entry… 

If you recommend the mold is only filled 95-98% during first stage, how is 100% determined?

My Response
Personally, I view a 100% full part as the weight of one where the polymer just reaches the end of fill… such a part would have little to no packing. Some people view it as a percentage of a complete filled and packed part, which works well for thin wall molding. Unfortunately, this not work as well in thick parts where the packed material can be a significant percentage of the overall part weight.
Additional Thoughts
The most important aspect is that you achieve a visible short at the end of first stage.

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