ENGINEERING CENTER

RECOMMENDED VENTING GUIDELINES

NOTES:

Vents shall always be placed at: 

     1、Last fill area of cavity(s)

     2、End of all thin wall sections

     3、Weld lines or knit lines

     4、Side pull cores

     5、Bottom of blind holes or blind details

     6、At parting line of cavities in all potential gas trap areas

Vents shall be ground whenever possible.

Vent land shall be typically .04 - .12 long.

Vent relief shall be typically .030 deep and .25 – 0.5 wide (out to atmosphere)

Glass filled materials normally require slightly deeper vents than un-filled materials.

Runner systems shall also be vented

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