New Lego 8xC "dirty" Bayers - shades of brown
Moulding defect:
Splay marks
Alternative name:
Splash mark or silver streaks
Description:
Usually appears as silver streaks along the flow pattern, however depending on the type and color of material it may represent as small bubbles caused by trapped moisture.
Causes:
Moisture in the material, usually when hygroscopic resins are dried improperly. Trapping of gas in "rib" areas due to excessive injection velocity in these areas. Material too hot, or is being sheared too much.
en.wikipedia.org/wiki/Injection_moulding#Process_troubles...
New Lego 8xC "dirty" Bayers - shades of brown
Moulding defect:
Splay marks
Alternative name:
Splash mark or silver streaks
Description:
Usually appears as silver streaks along the flow pattern, however depending on the type and color of material it may represent as small bubbles caused by trapped moisture.
Causes:
Moisture in the material, usually when hygroscopic resins are dried improperly. Trapping of gas in "rib" areas due to excessive injection velocity in these areas. Material too hot, or is being sheared too much.
en.wikipedia.org/wiki/Injection_moulding#Process_troubles...