The thickness of less than 0.75% lugs should put the paw thickness, note the big lug thickness is easy to appear the dimples on the surface because of the stress concentration increases.
The radius of transition beyond the thickness should equal 0.25% set lugs or at least equal to 0.4 mm in order to reduce stress. Once increased lug depth
transition radius should do to reduce the turbulence of the material in the injection molding process and keep stress to a minimum.
However, this leads to a surface as a result of prone to defects.
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