The supplies you will need are:
- a turkey baster $3, syringe $3, or ketchup bottle $1 (all from Walmart)
- clear plastic tubing $3, or bendy straws $1
- duct tape 4$
- blood $5
If you use plastic tubing:
- Fit the plastic tubing over the spout of what your baster, syringe, or ketchup bottle
- wrap the duct tape around the gape as tight as possible to prevent any leaks
- fit the bendy straw over the spout of what your baster, syringe, or ketchup bottle
- wrap the duct tape around the gape as tight as possible to prevent any leaks
- Fit the second bendy straw into the first
- wrap the duct tape around the gape as tight as possible to prevent any leaks
- repeat as needed
To do this and achieve a believable effect you need a fake knife and your rig.
Here are the steps to achieve this effect:
- Pour the blood into your ketchup bottle or suck it into your baster or syringe
- Tape your tube or straw to the side of your knife
- Place your baster, syringe, or ketchup bottle behind your actors head
- Stand next to your actor and angle the knife so that the camera cant see your starw or tube
- squeeze the baster, syringe, or ketchup bottle
- once the blood near the tip of the straw or tube begin to pull the knife across your actors throat.
- You have now slit your friends throat.
Here is a video of my friend and I learning to achieve this effect.
Remember if at first you don't succeed try, try again.