Deletion of Sink marks (injection moulding defect)

Comment: into Injection moulding. Does not pass  for a stand alone article.   ''"Information should not be included in this encyclopedia solely because it is true or useful. A Wikipedia article should not be a complete exposition of all possible details, but a summary of accepted knowledge regarding its subject"'' &nbsp;&nbsp;//&nbsp
Stance: merge
Cited policy: Wikipedia:Notability (WP:GNG||WP:NOTEVERYTHING)