How to Create a Realistic 'Bleeding-Knife' Effect





Introduction: How to Create a Realistic 'Bleeding-Knife' Effect


Stuart here from

This video shows you how I created a realistic 'bleeding blade' to simulate skin cutting for a TV show I did a few weeks back.

There was no time or budget to make a fake chest, and I was not sure where the camera would be so I had to make it work from every angle, make it safe and make it quick. I recreate the process for you here. 

Please leave comments or get in touch if you have any questions!


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    the effect looks awesome, and made me cringe every time.

    Just came here today and... This is horrible............ Really horrible :P

    Is this cheap to make how much was it?

    Nice!! instead of making a syringe, I made a little chamber inside the knife, and added a little push button in the hole. so if i wanted to make it bleed, i pushed the button which squeezed the plastic chamber and out comes the blood! Just a simple modification so you can do it in front of your friends without bringing around a syring and tubing everywere xD

    step 1:
    cut self/sibling/friend/other with knife
    step 2: done

    looks like it could be quite good on stage we were going to have a really dramatic scene in drama class where someone committed suicide with a knife but i was having trouble with it thanks for this

    haha ironic that just yesterday i accadentally cut myself with a hobby knife lol

    Hey im totally going to make this but where did you get the syringe. i have actually been looking for one of those for awhile. i wanted to make bledding effects like getting knifed in the face or something. please responde asap. thanks


    Try searching 'Laboratory Supplies', '100ml syringes', 'Vet Supplies' and 'Large Hypodermic Syringes'.

    Most syringes for general medical use are much smaller volume syringes, so to hold this amount of liquid, you may need a vet suppliers or laboratory equipment supplier.

    You'd be surprised how commonly these things are used, for all kinds of industry. Think any kind of work where accurate measurement of fluids such as ink cartridge refilling, etc.