How does a bigger dowel holds more weight than a smaller one?

Question

Let’s say I drill two holes in the ceiling, in different sizes. The dowel has to cover that hole so it needs more diameter to cover it. The space of the dowel will be filled by a screw that will trigger the dowel mechanism making it hook to the inside walls of the hole. Now, a bigger one can hold more weight than the smaller, but why if the grappling logic is the same?

In: 0

Answer 1

The weak point of drywall anchors is the drywall. If you pull too hard the drywall will crack and crumble. With a bigger anchor you spread the load out over more drywall, so it takes more force to get it all the crack and crumble.