Instructables
Picture of Slime
There are many recipes around for ways of making slime, lots based on PVA glue. This recipe is however a bit different, and is very similar to the commercially available slime toys.

There are many other recipes for making goo, both on Instructables and other places on the web as well as commercial products, so why use this one?

You enjoy making things and you will probably learn something new whilst making this
The cost will be significantly cheaper than buying a commercial product
You have full control of the properties of the goo- from runny to thick, clear to opaque and colourless to vivid colours
You can happily make large quantities of goo- even filling a bath or paddling pool becomes practical (think how many tubs of toy shop slime you’d need to this, or how much PVA glue)
The materials are easy to store- you can easily keep some on hand for rainy day play, or next Halloween
The gunk is a bit sticky- it therefore has a much better feel, and visual appeal than some commercial products (like Gellibaff), that simply run off.
The materials are biodegradable, and hence easy to dispose of
Most importantly- it’s more fun than buying it!

Whilst the materials on this page that are not known to have any significant health risks associated with them, they cannot all be classed as completely hazard free.

The largest single issue is the slipperiness of the mix- it can be very easy to slip over on. It is therefore essential to consider this when planning any activities involving slime, including clean up and washing off as the most significant effects will be found on a smooth surface such as a bath!

The materials are relatively fine powders, and as such create nuisance dust. It is therefore worth wearing a dust mask if handling large quantities. Likewise if this dust gets into eyes it can cause irritation.

Guar gum is not hazardous when eaten, however it can be used as a laxative, so it would probably be unwise to consume large quantities.

Borax (Sodium Tetraborate) is not safe for consumption, and should therefore be handled and used carefully so as to avoid ingestion, although in the quantities actually present in slime it should not cause any concern.

It is worth noting that whilst some other recipes found on the internet claim to be borax free, this isn't always the case. those recipes that use laundry starch have borax in the starch.

In addition to the specific information above, general safe chemical handling practice will further reduce the risk of any issues, in particular;
Store materials in sealed, well marked, containers in an area out of reach of children and pets
Wash thoroughly before and after handling these materials
Dispose of excess/ used materials/ empty packaging responsibly
Clean up any spills quickly- Avoid using water to stop the area becoming slippery
Do not use utensils/ containers/ cleaning cloths that will be later used for food
Supervise children whilst making or using the slime

In these instructions the quantities I give will make 1 litre of stringy slime. Quantities can therefore be easily adjusted to suit smaller or larger batches to suit your needs.
 
Remove these adsRemove these ads by Signing Up
1-40 of 46Next »
Kevin hardy8 months ago
sorry thats not safety
superpants (author)  Kevin hardy8 months ago

Perhaps you could elaborate any particular issue you have to help others?

hattrick589 months ago
When I went to university, our fraternity pulled a prank and filled the deans pool with slime. It took us over a week to make enough to fill the pool.
huangjianboy9 months ago
Does the feeling just like touching Oobleck?
superpants (author)  huangjianboy9 months ago

It's similar- why not try making both and comparing?

Viali Jones9 months ago
Can you fill a bathtub with it and run on it…? ;)
superpants (author)  Viali Jones9 months ago

You could fill a bathtub with it- most I have ever made in one batch was 60l- that was a lot of slime!

mk20019 months ago
I did something like this when I went to Brock university on a field trip
superpants (author)  mk20019 months ago

Cool- Now you can try it at home!

I have a question. Is the slime bouncy? Because the one I made was really bounvy
superpants (author)  cupcake lover1 year ago
This type isn't bouncy I'm afraid- To make it bounce you are best to use the PVA & Borax type.
XOIIO3 years ago
Anyone read that goosebumbs bood monster blood?

this is totally it.
yeah im a big fan of goosebumps
that's awesome anyone else remembers that!
Man, that was an awesome book! I actually have a copy lying around.

You know what another neat old series was? Animorphs. I used to read that like crack
have the whole set.. in a child hood box.. then was everworld.. not her finest...
OH. MY. GOD.

Goosebumps were like, my childhood. This stuff is awesome XD
Cool instructable! I'm totally gonna try this!
superpants (author)  friendlysinger2 years ago
Thanks- Have fun!
Chakolate3 years ago
Which way makes it thicker? Do you use more borax or less? More guar gum or less?
superpants (author)  Chakolate3 years ago
Increasing either the guar gum and borax will make it thicker- I would however recommend making up a set concentration of the Guar Gum and adding more borax as the best way to start
MoritzB3 years ago
Borax is dangerous, isn´t it?
superpants (author)  MoritzB3 years ago
Borax is not without it's hazards and various material safety data sheet give differing advice.

If handled appropriately, as I have detailed in the instructions, and importantly not eaten there should be no cause for alarm.

As with any product, do not eat, place in the eyes, and if there is any sign of skin sensitivity wash immediately.

When the slime is made, the borax is used to cross link the guar gum- it is therefore chemically bound into the slime. The hazards are therefore primarily related to the preperation of the slime.
Borax used to be used as a food preservative, and was only discontinued after years of consumption proved harmful to some people. So you'd have to say it's not good to consume it, but it's not exactly Public Enemy #1. IOW, it's relatively safe.
dwadhwa3 years ago
I saw on youtube that we can make slime easily.u just need-
1.elmers glue
2.borax
3.water
superpants (author)  dwadhwa3 years ago
You can use glue to make slime, but this method offers some advantages- primarily it is cheaper!
jcksparr0w3 years ago
1% of a liter is a centiliter or 2 teaspoons
fireburnin3 years ago
slime is awesome to play with but i have never made it cause i don't have all the right stuff
kyayokh3 years ago
is it wet?
just asking because i used 'kanji' powder ( i dont know it name in english) to mike slime and it make my hand wet
superpants (author)  kyayokh3 years ago
It will be wet, but not excessively so. How wet will depend on how much borax you add- the thicker the slime, the less wet it will tend to be
crazybot_993 years ago
wow it is cool, i tried it on my stupid sis!
jajajajajaja
my photo3 years ago
thats just sparkeley play dogh midxed with a hole bunch of diffrint stuff
No, it's not.
Nah, it just looks like snot.
Erpy Derp
superpants (author) 3 years ago
Have fun with it this weekend bigbunyip!

The PVA version is probably a bit simpler, but the key advantage in using guar gum is you can make a lot of slime very cheaply, which would be impractical with PVA. This means it opens up all sorts of oppurtunities for lucky dips using it, special effects in your home movies, or as ninjnody says, slime wars with your friends!
bigbunyip3 years ago
Wicked slime, and so simple, i'm gonna make some with my kids on the weekend just 4 fun, thanks, ,
renrui.743 years ago
wow that´s something i have to do in my next costume party
tinadalton3 years ago
I taught for years and we make "Slime" on a weekly basis. We didn't use the Guar Gum instead we took the borax about three tablespoons and mixed it with a few cups of hot water. We then took white glue, such as elmers and mixed in a food coloring or kept it plain and added it to the borax water mixture. It takes a while to mix it but it looks like the same outcome as this version of slime. It was just easier then finding the guar gum for us.
Great instructable by the way.
1-40 of 46Next »