The sledgehammer is another "makeshift" weapon, one not originally intended to harm other bears. The sledgehammer is a slow weapon, meant for use against the R0B0-B34R5. It can be used to bludgeon. The sledgehammer is a long wooden pole, with a cloth wrapped around the middle, and a metal hammer headpiece. It first appears in Episode 6.
Although slower than many other weapons it packs a strong punch enough to kill Bears with a few hits.