Dowels

Dowels are rigid rods, usually plastic or wooden, inserted straight down into a cake's lower tiers to carry the weight of the tiers stacked above. Without them, a soft cake underneath can slowly compress or sink under the load, tilting the whole structure or causing tiers to shift during transport.

A set of dowels is typically cut to the exact height of the tier it supports, then arranged in a circle under where the next tier's board will sit, spreading the load across several points rather than a single center pole. This differs from a single center rod, sometimes used alongside dowels, which mainly resists tiers sliding sideways rather than sinking.

Look at dowel material and diameter relative to how heavy and how tall a tiered cake will be, since thin dowels can bow under a large upper tier. Measure and trim each dowel to the same height so the tier above sits level. A common mistake is skipping dowels on a cake that looks firm, since compression can happen slowly during transport and setup rather than immediately.