The wedge is a part whole and a filler of holes.
It is a shim and a ramp.
It is a fixer, an adjuster, a multiplier of forces.
For this or for that or for him or for her or for there, it is an homage for and a tool for.
It is a remnant, a remainder, a found thing, a thing to be discarded, a material with potential and a material to be kept.
It is to be used and used up.
Used up, it is finally unusable and so, useful.