Bleeding Knife Prop

I made this as a prop for a stage production. The handle and blade are hollow. The handle prints with no supports and the blade only needs supports under the nipple. The back of the blade has a nipple where you can attach surgical tubing. Then handle has a hole on the top near the back so you can run the surgical tubing up your sleeve and connect it to a syringe or maybe a pump. Fill it with stage blood and squeeze the syringe as you drag the blade across someone's throat. The blood will com