This could be because parts that were not needed were discarded when creating the weapon.

The shishkebab weighs less than half the total weight of the components used to create it.

This effect can also be seen on dismembered limbs. This does not affect gameplay and usually disappears upon leaving the area and returning.

Repeated slashes on a dead body may form an 'eternal fire' on the body itself, or the place where the body is laying.

The shishkebab is one of the weapons that can burn Harold in the quest Oasis.

When equipped, the player character and their companions will also wear an oven mitt on their right hand - presumably as protection from the heat.

The same applies if a companion has it equipped.

As it is constantly on fire, the shishkebab will set off gas leaks if the player character walks through one with the sword drawn.

Vance wields a shishkebab which will be in poor condition if looted from him after killing him. The shishkebab can successfully strike about 429 times from full condition before breaking. Like all custom weapons, it can be upgraded with v2 or v3 schematics. Any humanoid companion can use a shishkebab. The Pyromaniac perk will also increase the shishkebab's melee damage and boost fire damage from 2 to 3 damage per second for 5 seconds. The shishkebab, in addition to its Melee damage, will also set the target on fire, dealing 2 damage per second for 5 seconds. The motorcycle gas tank provides a reservoir of fuel, the handbrake becomes part of the handguard and likely the ignition trigger for the pilot light, the lawn mower blade becomes the blade of the sword, and the pilot light ignites the fuel-coated blade when the sword is drawn. The shishkebab is a makeshift 'flaming sword' that requires the appropriate schematics to build.

Fallout 3 best melee weapon