Without digging too deep into the science; I would purchase manikin heads vs styro heads. The hard plastic could also have some long term effects as does getting old (Darn my back hurts!).
John
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Without digging too deep into the science; I...
Without digging too deep into the science; I would purchase manikin heads vs styro heads. The hard plastic could also have some long term effects as does getting old (Darn my back hurts!).
John
