How do you make Toothbrush Shiv?

ItemsAmountMode
Toothbrush1
Improvised Whetstone, Whetstone1keep
File, Small File Set1keep
Multitool, Small File Set1keep
Hacksaw1keep
Small Hacksaw1keep
Simple Metal Knife, Fighting Knife, Stone Knife, Handguard Dagger, Handiknife, Hunting Knife, Kitchen Knife, Butterfly Knife, Fillet Knife, Paring Knife, Pocket Knife, Sushi Knife, Large Knife, Scrap Metal Large Knife, Long Simple Metal Knife, Machete, Machete Blade Knife, Scrap Metal Chopper, Multitool, Railroad Spike Knife, Sharp Flint Flake, Small Knife, Steak Knife, Long Stone Knife, Straight Razor, Switchblade1keep
Lighter, Lighter - BBQ, Lighter - Disposable, Lighter - Improvised Battery1
Burlap Piece, Denim Strips, Duct Tape, Leather Strips, Rag, Twine1
Duct Tape, Adhesive Tape1

Produces

Toothbrush Shiv1