Step 14: Comparison of Oogoo and Sugru

Picture of Comparison of Oogoo and Sugru
Pic21 shows a eyeglass holder made with sugru on one side and Oogoo on the other to hold on the neoprene neck strap.

Pic22 shows a small coin cell flashlight I made on a circuit board and then covered with Sugru.

Pic 23 shows a Picaxe circuit I laminated on the bottom side with Sugru to protect the thin wires on the back and keep it from shorting.

I experimented around with several packets of Sugru to see what it would stick to and to see what it took to mold it to clean shapes.

Advantages of Oogoo:

1- Made from inexpensive and easily obtained materials.

2- Easy to work and mold into forms.

3- Will set up quickly at any thickness.

4- Can be mixed in any color.

5- translucent structures possible for lighting aplications.

6- slightly more flexible than Sugru.

Advantages of Sugru:

1- Much milder fumes, can be easily used indoors.

2- Cures to a harder rubber.

3- Gives more working time.

4- Already mixed.

5- Somewhat easier to smooth.

6- Carves easier than Oogoo.

that ring was made out of bismuth: melting point 520ish
pewter casting silicone can only take up to 300
boypony3 years ago
Holy Crap.
This is amazing.
I just made a 50/50 batch and it set up in like 30 minutes and part of it was like 1/2" thick.
Mold is flexible and held detail well.
This is the holy grail for us cheapskates who won't pay the big bucks for A/B silicone.
THX SO MUCH!!!!!!!!
trescubes4 years ago
is there any differences between the 2? the homemade one and regular sugru? i was just curious is one more durable or "better" in anyway? or is it pretty much the same thing just WAY less expensive haha
Does anyone know if either Oogoo or Sugru are safe for making earplugs?
I'm wanting to make custom molded ear protection for shooting and concerts but not too sure if these would cause any damage or not.
Creaturiste4 years ago
Thank you!

I will try this next time I need to mold something which I usually woulod have done with the expensive silicone putty!

I make puppets, masks and collectibles, so this technique will likely come in very handy!
Ans yes, I tried it months ago, and keep using it. It's really a money saver, although the time aspect is not as shortened as one would wish, the thick oogoo is hard to apply in precision.

I would really like it if someone found a non toxic way of making this pourable, for the first detail layer. There is a way that is toxic, which is adding solvent, such as mineral spirits, but I'd rather not use this while I'm stuck inside for the winter time.
Here's the link to the other guy's article where he uses the modified Oogoo method with mineral spirits...

I wonder if regular white vinegar would be a suitable solvent?
I will be trying this as well. It looks to be a great alternative to using more expensive silicones in small to medium quantities.
kboyte4 years ago
Cured silicone is okay. The acid given off by uncured silicone WILL cause blisters over time. You might want to consider using disposable latex or plastic gloves.
1stage4 years ago
Fantastic! This is one of the most useful Instructables I've read. Any idea if Oogoo can be used for prolonged periods in contact with skin... i.e. as an inexpensive custom, fitted silicon earpiece for a particularly annoying Bluetooth headset of mine that looses ear bumpers constantly? :)
The only thing I would say is try wearing a small piece (the size of a penny) under a plaster on the inside of your arm. This is a very sensitive bit of skin and any signs of irritation will show up. You may need to leave it there for a few hours.

Hope this is a useful suggestion.

ps Don't blame me if you come up in a rash.
Worth a try! And fortunately, the human ear is already pretty well protected by wax/oil near the canal opening, so it may not even be an issue.

Thanks for the feedback, though.