Have gloves ready if you don’t want to get your hands dirty.
Optional: If you want your magnetic slime to have a certain color, add a drop of that specific food coloring to the mixture.
If you don’t have a contact lens solution, other solutions that contain the necessary compounds boric acid and sodium borate are laundry detergents, household cleaners, and liquid starch. If you are using a household cleaning solution instead, stand away while pouring to avoid ingesting any fumes.
If the slime seems sticky at first, keep kneading. It should thicken as time progresses. Wear gloves for this part if you don’t want to get your hands dirty.
Stand away to avoid ingesting iron dust. Iron oxide powder (or iron fillings) can be purchased at a nearby craft store, Walmart, or online if you don’t feel like going out!
Around this time, the slime should start to smooth and dry. Use a paper towel if necessary to assist with this process. If one tablespoon is not enough iron oxide powder, feel free to add up to two.
Make sure you’re using neodymium magnets for this process. Neodymium magnets are a form of rare-Earth magnets with a super-strong magnetic pull and boron as a key element, making them extra reactive to the borax in the slime. [8] X Research source Avoid slamming magnets together so your fingers don’t get hurt. Keep your slime and magnet away from cell phones, credit cards and other devices with magnetic sensors that can be stripped away. Neodymium magnets can be found online or at your local hardware store. For fun, place your magnet on top of the slime and watch the slime swallow it whole!
These field lines are a great example of your slime’s magnetic force.
