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Step 3: Mixing Oogoo

Mix By Volume
As stated before, Oogoo is simply a mixture of clear silicone caulk and corn starch. It can be mixed anywhere from 5 to 1 to 1 to 2 silicone to corn starch by volume. Up to a point, the more corn starch you add the faster it will set up. I like to mix it in small disposable cups using a Popsicle stick that is wrapped with Gorilla Tape to create a spatula. See pic4. Once it cures the Oogoo peels easily off the tape wrapped stick and the mixing/spreading stick can be reused.

Mix In Small Amounts
A good starting mixture to try out is 1 corn starch to 1 silicone by volume. It is easiest to mix it in small quantities so as to have plenty of time to work it. To see how it works, you could start with 1 tablespoon silicone caulk to 1 tablespoon of corn starch. You can reduce the amount to as little as 1/4 tablespoon corn starch to 1 tablespoon silicone if you want more time to cast it or sculpt it. I rarely mix up more than 3 tablespoons of silicone at a time.

The dry starch and sticky silicone do not want to easily mix. But if you are persistent and keep quickly stirring and mashing the mix, they will eventually merge into a thick paste. The resulting Oogoo is very sticky and will stick to anything that you spread it on. Most things it will stay well glued to. On a few things like some plastics and metals, it will easily peel off after it has cured.

The resulting Oogoo is a nice reflective white but I recommend coloring it so that you can easily see if you have an even mix. See the coloring step.

WARNING: While mixing, Oogoo will give off the strong smell of Acetic acid which can be irritating to the eyes and respiratory system. I strongly recommend that the mixing and forming be done outside or in a VERY WELL VENTILATED room. You should also wear nitrile gloves while mixing as the uncured silicone contains other solvents that might be absorbed by the skin.

One recurrent problem with silicone caulk is that once opened, it will tend to set up in the tube tip. To get a good seal I have had good luck using Gorilla tape wrapped over the tip. See pic4b. If you leave a quarter inch gap between the wrapped tape and the tip you can squeeze out just enough silicone to seal the tip well from air and moisture.


<p>Hey, does anybody know if I could remove this? Real sugru apparently comes off if you need it to, and I'm planning to attach some sugroo/oogroo to my locker, but it can't be permanent. Does anybody know?</p>
I made a cord snap keeper and the edge of a white IKEA lack shelf. When I was done. It did not come off &quot;easily&quot;<br><br>
<p>I have more trouble keeping it stuck than removing it.</p>
<p>i do not know. but try this on a piece of metal then try different ways of taking it off.</p><p>For hot-melt-glue i use rubbing alcohol (RA) and tweezers. i close the tweezers then dip the point in the RA, then press the tip where the glue meets the metal. the RA then flows between the glue and the metal, separating the two.</p>
I've been looking for a compound that i can use for gap filler on a pair of &quot;frankenboots&quot; i made. The soles dont quite match up with the upper so i need something that can fill in the gaps but, will remail flexible, and that will be water repellant. Has anyone used oogoo for anything comparable?
Based on what I just made, this will be perfect
Sugru SHELVING brackets hold weight; I'm wondering if anyone has experience with Oogoo to hold a SHELF?
<p>I haven't had a lot of success with this stuff sticking. I've tried using it like a rubber shield on several objects (thermos bottles, car keys, keychain lights, etc.) and it always lets go a lot easier than I'd prefer. In the picture is a bumper I made for a battery bank. Those holes are where neodymium magnets were stuck. They held for about a week of use before I started finding them stuck to each other instead of the battery. In this application, it's held onto the plastic case quite well. Not so much, the car key, bottles, etc.</p>
Maybe try embedding he magnets in the material, so the oogoo surrounds them completely , also maybe less cornstarch to silicone willake it stickyer
<p>Thanks for doing all the research and providing these instructions. I'm going to start experimenting with it for various applications. Has anyone tried using reclaimed copier toner as a colorant? </p>
<p>maintenance man tip use a sheet rock screw or other screw to seal the end of your caulking tube just slide it in and any caulk that dries will cure to the screw and pull out for your next use </p>
<p>Once the caulk-type tubes of silicone are opened, they will cure internally and become useless in a short time. If you have a food-saver type vacuum sealer, the tube can be sealed inside and will last much much longer. Even the low priced hand pump version will increase the shelf life of the unused silicone. The gallon size bags are difficult to find locally, but I checked Amazon and they are available there.</p><p>It's also possible (but not tested) that any unused oogoo left over could be saved in a vacuum bag.</p><p>If you use the hand pump vacuum bags, add a piece of adhesive tape on the vacuum flap of the bag to ensure it doesn't accidentally release and let air inside.<br></p>
I've used abig 'glob' of Vaseline on the end. It has worked really well. Also used a ball of polymer clay pushed on the end.
<p>&gt; It's also possible (but not tested) that any unused oogoo left over could be saved in a vacuum bag.</p><p>My bet: t's not gonna work very well - any moisture in the corn flour is going to trigger polymerisation - this is why you have shorter cure times even when the molded objects are massive.</p>
<p>I can see that might be the case. One would then expect that the suguru stuff doesn't use a similar method to catalyze. There probably isn't much moisture in the cornstarch until it is opened. After that, all bets are off.</p>
<p>&gt; There probably isn't much moisture in the cornstarch until it is opened</p><p>Up to 15% cf </p><p>https://www.law.cornell.edu/cfr/text/21/137.211</p>
<p>Great tip and useful for so many bags that I use, hoping that the zip will be good enough. I get the air out by rolling up the bags tightly, if possible, and then zipping them shut, and it fails pretty often. Thanks so much for such an easy fix.</p>
I'm loving Oogoo. Getting older and am making 'handles' for all sorts of tools and utensils. Ready to experiment with making a more liquid product so I can pour molds. One observation - when molding by hand, dipping your hands in cornstarch makes it easier to smooth the Oogoo. <br><br>One question - could you mix the ingredients in a closed ziplock bag?
<p>Has anyone tried (not for food safe) FlexSeal as seen on TV and or using Undercoating and mixing that with cornstarch? I am not sure if FlexSeal can be had in clear or not that you could color on your own. But since they both come in cans that would be storage problem solved.</p><p>c</p>
Can this be used to serve food or water off? How toxic is it?
<p>Dear Mikey77 and all of the helpful commenters here, thank you! This stuff is the bomb! My husband and I have been using it for 4+ years to make relief sculpture molds for our costumes. Over that time we've refined the method specifically for this purpose. Many artists ask us how we do it , so we just made a pdf booklet called &quot;Oogoo for artists&quot;. Check it out here</p><p><a href="http://organicarmorarts.com/product/oogoo-for-artists-book/" rel="nofollow">http://organicarmorarts.com/product/oogoo-for-arti...</a></p>
<p>Dear Truffula,</p><p>Mikey77 was kind enough to share a wealth of knowledge for free but you chose to use this forum to sell yours. Why?</p>
<p>Ubobi, because Truffula has self-respect for her own value as a human being. Try being dirt-poor for years doing nonprofit work before you criticize others; it gives one perspective. Society is not entitled to my labor; I am not a slave. Neither is Trufulla. </p><p>Don't pretend otherwise.</p>
<p>JoeE40, you may have misunderstood my comment. I am not criticizing Truffula or anyone else for that matter, to sell her wares. My point is simple that this is not the forum. </p><p>Thank you for your thoughts.</p>
<p>Hmmm... I was looking at pic #11, and it reminds me of the sole of some flip flops. Have you tried making anything like that, as in repairs to shoes, flops, or even furniture feet (yeh - I don't know why that came to mind, there, lol). When you blow out a flip flop, and don't want to throw out your favorite ones, just because one of the plugs won't stay in, I wonder if you could do it with the oogroo... I'm just unsure of the durability, in those types of repairs, and such.</p>
<p>It is way stiffer than the foamy flip flops I grew up with. As for furniture... well, I've used it with some success as keyboard feet, phone charger feet, etc.</p>
Cool, thank you! I've used it (based on your ible) to repair cords attempting to separate from their appliance, and as a bathtub drain plug. Thank you so much for this ible- I often have new ideas for it, &amp; frequently find myself wondering 'I wonder if oogroo would work for this...'

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