How to make your own slime using just 4 household ingredients

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Here at STEM HQ, we have been experimenting with our young STEM volunteers and finding out various ways we can make some fun slime. Who doesn’t love slime?

There are various ingredients and methods you can use and many methods involve the use of borax. While it is generally considered safe, we decided to go down a non-borax route. You can google borax and make your own decision about for yourself.

So, based on (lots and lots) of trial and error, here is our best recipe for making homemade slime:

What you need:

3 plastic pots or tubs (yoghurt cartons work well)
1 wooden lollipop stick (for mixing)
1 teaspoon (for measuring)
1 tablespoon (for measuring)
PVA craft glue (we used PVA glue from The Works)
Table salt fine
Laundry detergent (we used Almat Non-Bio from Aldi)
Bicarbonate of Soda
Water
Food colouring
Glitter

Method:

1. Pour a 50p sized blob of glue into 1 pot/tub.
2. In a second pot, pour half a teaspoon of salt and dilute with 2 tablespoons of water. Mix well to dilute solution.
3. Using a teaspoon, pour a half a teaspoon of the salt solution into the pot with the glue. Mix well.
4. Now add 1 or 2 drops of food colouring and glitter. Mix well.
5. Using a teaspoon, drop a quarter of a teaspoon (a tiny blob) of the laundry detergent onto the coloured glue.
6. Start mixing well, the glue should start to thicken almost immediately. Keep mixing.
7. Add another drop of laundry detergent and keep mixing! The trick is to add a tiny amount of detergent at a time. You should only need to add no more than 3 blobs of detergent for this recipe.
8. Your mixture should now to super sticky and come together to form a ball. Keep mixing until it has all combined. It will still be very sticky to touch.
9. In the third pot, pour 1 teaspoon of bicarbonate of soda and dilute with 2 tablespoons of water. Mix very well.
10. Add half a teaspoon of the bicarb solution to your ball and mix well. The bicarb should help your slime be less sticky.

You should now be able to handle the slime and work it by kneading and forming it!

Congratulations, you’ve just made your own slime! Be sure to post your comments and any photos of your experiments.

(Please note: this is all about experimentation and seeing how different materials react to each other. It took us nearly six attempts before we got the ‘right’ slime consistency! So keep trying and HAVE FUN.)