If you want to tailor these rules to a specific project, please let me know:
Are all ribs designed between 40% and 60% of the nominal wall thickness? injection molding part design for dummiespdf exclusive
INCORRECT: Sharp changes in thickness cause internal stress. [ Thin Wall ]=====[ Thick Wall ] CORRECT: Use steps or coring to maintain uniform wall thickness. [ Thin Wall ]\_____[ Uniform Wall ] Use code with caution. Material-Specific Thickness Guidelines If you want to tailor these rules to
Ribs are thin, raised features that act like I-beams, adding immense stiffness to a part without increasing its overall thickness. However, a poorly designed rib will cause a visible sink mark on the opposite side of the wall. [ Thin Wall ]\_____[ Uniform Wall ] Use code with caution
Bosses are used to mount or fasten parts (e.g., screw holes). They are prone to sink marks because they create a thick pillar of plastic. Keep the base wall thickness thin.
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