How To Make “Proto-Putty” (Modified Oogoo)

How To Make “Proto-Putty” (Modified Oogoo)

The long awaited tutorial! Make anything on a budget with this substance that molds like play-dough, but hardens into rubber.

Quick links to the materials; [✓] All Purpose Silicone: [✓] Neon Food Coloring: [✓] Cornstarch: [✓] Popsicle Sticks: [✓] Nitrile Gloves:

Food Grade Silicone: SmoothSil Silicone:

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LEGO Candy Mold:
Styrofoam Into Aluminum:
Ninja Stress Balls:
Glycerin Soap:

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Music by TheFatRat (“Xenogenesis”)
Licenced by Tasty

Project Inspired By:

Mikey77’s Instructable on Ooogoo:


This video is only for entertainment purposes. If you rely on the information portrayed in this video, you assume the responsibility for the results. Have fun, but always think ahead, and remember that every project you try is at YOUR OWN RISK.

Project History & More Info:

Casting silicone is very expensive, so over the years I tried to find a cheaper alternative to making LEGO candy molds (

I started off trying silicone caulk from the hardware store, but globs of it would take weeks and weeks to finally firm up. That wasn’t acceptable because I needed something that would harden in 24 hours or less.

About 3 years ago I came across an Instructable by Mikey77 showing that mixing corn starch into the silicone caulk could be used to make it firm up in under an hour.

I did a number of experiments of my own, and eventually found out that corn starch wasn’t actually needed at all, but that all you needed was to add a little food coloring.

I still like to use corn starch though because it helps prevent the caulk from sticking to my hands as I work with it. The stuff is really hard to get off if it sticks to skin!

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20 Responses

  1. Grant Thompson - "The King of Random" says:

    My Instagram account is pretty weak and needs your strength. ( Would you please check it out and
    follow me?!

    Quick links to the materials I used, to save you time;

    [✓] All Purpose Silicone:
    [✓] Neon Food Coloring:
    [✓] Cornstarch:
    [✓] Popsicle Sticks:
    [✓] Nitrile Gloves:

  2. Reshiram says:


  3. Iron Man says:

    I don’t have any ideas on how to troll you guys.

    Read More

  4. Illuminati says:

    if you see this, have a great day/night 🙂
    spread the love and positivity <3

  5. gtasandman says:

    easier to use soap and water instead of cornstarch

  6. supertito1O1 says:

    dude your going to put sugru out of the market

  7. NerdBubbleGum says:


  8. Fant Ikke Noe Navn says:

    I would make a purple dildo!

  9. DMT ARCHER says:

    can you make a weapon out of that? 😊 and yea i am gone fellow your

  10. Sweetchilichips says:

    I made a dildo out of the putty

  11. Tommy B. (TommyTheTV) says:

    Can you make a video on how to make the grenade more in-depth like this
    comment if you want the same

  12. max playne says:

    Oh boy! now I start my cheap dildo company!!

  13. Destiny's World says:


  14. 4sh 247 says:

    I have been waiting this for a long time

  15. Cool Dude says:

    Bro you are growing so fast. Congrats

  16. Moo Rabbit says:


  17. Gavin Haase says:

    “When the silicon gets mixed with water it gets triggered” Lol

  18. Aero Aux says:

    “The silicone gets triggered.” Grant Thompson 2016

  19. Krishna Potaraju says:

    can u just use water instead of food coloring

  20. Johanna Bascom says:

    I’m gonna try to make that stuff so I can make a phone stand!!!