When using screws in a part, what is better? Thicker or thinner layers?

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(Abc Def) #1

When using screws in a part, what is better? Thicker or thinner layers?

(Abc Def) #2

The screws im using are self tapping and seem to work ok until it gets over tightened, then it splits layers. All the material i can have between the hole and outer shell is 3 perimeters

(Abc Def) #3

I’ve tried that, but then i only have two perimeters of material around the hole

(Abc Def) #4

That’s what i tried. The piece that holds the screw isnt that thick so the bigger the hole is, the less material that can be around it. Its a peg