Instructables
Picture of How To Make Your Own Sugru Substitute
I call it Oogoo, an inexpensive silicone clay that is easily made. It can be used as an excellent substitute for Sugru. It can be hand molded or cast in forms. Or, it can be used as a casting silicone. It can be colored any color from white to black. It can also be made translucent to allow diffused light to shine through. It can even be painted on in thin layers. It has very good adhesive qualities and will stick to itself, glass, fabric, paper, wood, and some plastics and metals.

This instructable will show :

1- How to mix and color Oogoo

2- How to cast it or hand form it into different shapes.

3- How to make silicone paint

4- Several interesting uses for Gorilla tape and Gorilla Glue, see steps 3, 7, 12 and 15.

5- How to make a few projects using Sugru and a comparison of Oogoo and Sugru


Since I am mainly interested in using Oogoo to embed electronic circuits in flexible forms, this instructable will also show you how to:

1- Make a soft circuit LED pumpkin head robot display that can be embedded on to clothing.

2- Make cleanly etched conductive fabric circuits

3- Make conductive glue using Gorilla glue.

4- Embed circuits in Oogoo or Sugru


The intro pic shows a few of the silicone shapes that I made using Oogoo and a funky, smirky, flexible pumpkin head robot LED display.


 
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cusco194 days ago

how long does it take to completely dry up and harden? which brand of 100% silicon gaulk have you guys had very good success with? i wasn't able to find those in home depot or lowes. :(

any suggestions would be great! i'm trying to make some replacement grips. thanks.

Theo215 days ago

Hello - Any ideas on how to make a batch that is reusable but still cures to mold? Would like to be able to reuse if possible. Thanks.

WarrenF22 months ago

Hi, i see this is a old post so hope someone is still out there. Mixed oil paint with cheap white silicon but it seem to not be drying/curing? Any ideas what is going wrong here?

more corn starch?

Try using a paint that is not oil based, I think the oil is the problem.

Davlof15 days ago
Awesome, thank you!
Ironwave15 days ago
Thanks for this.
It is posibly the second handiest thing I have ever encountered.
Mr AbAk15 days ago
Nice Idea
Thanks for sharing!!
LydiaP1 month ago

Thank you for the instructuble. When you say "metals that melt at low temperatures can be cast", what is the highest temperature you think it could handle?

mikey77 (author)  LydiaP1 month ago

I have only tried it with bismuth which melts at about 520 degrees F.

Metal alloys that melt at that temperature or less should work with Oogoo.

If your are an adventurous experimenter, you could try adding fine sand or red iron oxide to increase the temperature of metal castable Oogoo.

tkjtkj mikey7717 days ago

Just a cautionary note: bismuth, one of the 'heavy metals' that include mercury, arsenic, lead, can be quite toxic ... Vapors from heating could be especially dangerous so please take precautions.. SERIOUS precautions .. Here is a rather comprehensive ref article:

http://journals.lww.com/em-news/Fulltext/2001/04000/Bismuth_Toxicity,_Often_Mild,_Can_Result_in_Severe.12.aspx

Great idea with lots of possibilities

wolvmarine20 days ago

I was wondering if you ever experimented with using a ziplock bag to mix it up and once mixed thoroughly cutting a corner out of the bag and dispensing it like homemade frosting onto the project at hand? Also leaving it in the ziplock bag and molding around obtuse/shallow shapes?

Shikamon24 days ago

Hey there! I tried making Oogoo just recently and it worked great but I was wondering about something. Is there a way to make Oogoo bond to surfaces by itself like Sugru could? Also, if I use less corn starch, would that help make the surface more repellent to sweat? I'm planning on making a mouse grip and would love to make this workout! Thanks and great instructable! :D

mikey77 (author)  Shikamon23 days ago

As I mentioned in the instructable, Oogoo does not bond as well to some plastics as Sugru does. You can try putting a thin coating of superglue or a thin coating of pure silicone caulk on the surface. Let it set up overnight and then apply the Oogoo.

If that does not work you can try for a mechanical connection. Use whatever glue will work on your surface to glue fabric or thin plastic mesh onto the surface. Once dry you can add the Oogoo.

I have not had any trouble with sweat on Oogoo. Clean it occasionally with soapy water and it should work fine.

Ok Mikey! I'll try putting some silicone caulk on my mouse then. Should have thought of that before. xD Thanks again and have a happy new year! :D

andy.knote1 month ago

Excellent Instructable. Many many possibilities- Nice Work!

Batik dye is water soluble and makes really incredible colors in corn starch paint (dye and water and cornstarch). I haven't yet tried this incredible instructable although I plan to tomorrow when I can purchase some silicone caulk-- but I wanted to offer this alternative to oil paints for coloring oogoo, in case it would work better. Thanks so much for these very clear instructions. Very exciting and a terrific idea!

SparkySolar2 months ago
Wicked cool
davidbarcomb2 months ago

Cool project. Thanks for sharing

SparkySolar2 months ago

I am so going to try this

SparkySolar2 months ago

I am so going to try this

IamTheMomo3 months ago
I am on a tablet &7 want to dowload the PDF, but it isn't showing. How can I do that? I love the 'ible! Thanks!
cammers4 months ago

Thanks for a great Instructable. I used Oogoo to anchor a car mount for my tablet. Here's my I'ble for the project...

http://www.instructables.com/id/How-to-Make-a-Tabl...

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howtopals made it!4 months ago

Nose piece on my glasses broke. Fixed them with oogoo. Thanks!

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Ratman Props4 months ago

Can anyone tell me what the library life is for this stuff if I make a mold for some parts I want to cast?

traceyp14 months ago

I WANT A POURABLE OOGOO ANYONE GOT THE RECIPE

Rasmis traceyp14 months ago

Comments suggest adding naphtha for a more fluid version. Which brings me to another question: What do you mean, when you write naphtha? It's quite a loose term. Is it white spirit? Petroleum? Turpentine?

Thanks, I used this to make my radio earpiece fleshy. It isn't durable, maybe since it takes a lot of abuse in my bag and while being worn, or maybe because I mixed eyeshadow with the cornstarch to get the color.

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mircea_p15 months ago

I want to tell you that oogoo is great, but i find it difficult to add the right amount of corn stack, in order to have a non-sticky mix. An easy alternative is to mix the silicon directly in soppy-water, after 30 sec if you have water on your hands the silicon is not sticky. Check out this alternative, I try it an is amazing:

https://www.youtube.com/watch?v=C6z3_dcP1_M

GenerallyOdd5 months ago

Has anyone been playing with the "self-healing" properties of silicone and what one might use as a catalyst?

CT46 months ago

Great Idea. There is however one major flaw that you keep pointing out with out knowing it.....the Acetic Acid. This is a killer for any electronic circuit and should not be used on any thing important. I can speak with authority on this as I encapsulate electronic circuits for a living. A client who started using our services had makes animal tracking tags that they had sealed with the silicone you are using, within 2 weeks every one of the 800 tags had failed! On opening them the circuits where green and corroded, a very expensive mistake on their behalf. We use silicone but it must be the natural cure type, this may be the GE silicone you referred to in your article I am not sure as we do not have that brand in Australia, and therefor may not work with the corn starch.

maddavo CT45 months ago

The silicone to use for electronic circuits is Dow Corning 744. It is a neutral cure RTV. It is available from Element 14 in Australia (part#1922181). It cures in the presence of moisture (humidity). I'm not sure the cornstarch trick will make it cure faster. Maybe water? But then you don't really want to get electronic ccts wet.

mikey77 (author)  CT46 months ago
You are somewhat correct.

If you use full strength silicone caulk, if it is thick enough, it will take days to set up and the acetic acid can corrode copper circuit boards in that time.

That is not what I have suggested.

Oogoo sets up much faster and in twenty four hours most of the acetic acid has dissipated. In a thin application, (.12 inches or less) the amount of corrosion on copper or solder or tin is minute and will not effect the circuit in a significant way.

Also, you can also spray paint the circuit board with spray paint lacquer before encapsulation and the protection against corrosion will be close to 100 per cent.

Hey Mikey.... you are a genius! Thanks for posting this well written instructable. Have you or anyone else found any resource for larger than tube quantities of 100% silicone caulk? I have some bigger projects that could use a gallon at a time... or or a five gallon bucket that can be resealed could work if it can maintain a shelf life after opening.

mikemorana1 year ago
How well does oogoo handle hardware like nails and screws once it has cured? Has anyone tried drilling holes through it?
I've got a project where I need to fit a tube through a stopper (not necessarily air tight). I'm thinking of using Oogoo to make the stopper since the glass is an odd shape and drilling a 3/4" hole through its center.
Feasible?
mikey77 (author)  mikemorana1 year ago
You can drill holes through it. But they will be smaller and somewhat ragged.

A better way is to cast the hole in the Oogoo as you cast the stopper and use a 3/4 inch metal or plastic tube to create the hole. You can then remove it and replace it with a more permanent tube.

To drill a hole in rubber, get a piece of metal tubing the right size. Brass will do for Oogoo. Chuck a maneageable length in your drill, and if you can, slip a piece of something that just fits in the part that is chucked to prevent crushing. run a file or use a sandpaper or a sander to put a chamfer on the end to form a cutting edge( run the drill, hold tubing against file/sandpaper as it rotates), then cut a plug out of the rubber. the hole should be roughly the inner diameter of the tubing.

Bingo. I put holes in rubber stoppers using that exact method.

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apburner6 months ago

This stuff is really easy to make. I got the material from Big Box Home improvement store and it's sister store Wally world and tried it. apparently not real critical on the amount of goo to starch I made up two batches and just put in a bunch of each and it just worked. Once you start stirring the acetic acid will become intense almost instantly. However after about 2 minutes it becomes almost no smell at all. You really have to try and smell it to tell it stinks. After a couple of hours there is no smell at all.

Well done Mikey77. Very useful ible. my picture was required but all I did was press it into a small plastic mixing cut to test the hardnest and see what is was like once cured. Sorry for the bad pic.

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