Polishing the Lodestone Bio Magnets

Since there have been several requests about whether Lodestones can be polished, here’s a post about how I’ve done it.

Disclaimer: You might go too deep and expose the magnet, which could ruin it, or leave behind polishing agent residue, which may cause complications if not thoroughly cleaned. The magnet can also easily get yeeted away and lost if youre not careful.


You will need:

20–30 minutes of your time

A Dremel (A cheap Knockoff is sufficent)

Cotton polishing bits for your Dremel

Polishing paste (Dremel offers a red one that works fine; you can also use diamond containing polishing paste from E-bay, for example)

A clear plastic bag to work in—your magnet will fly off occasionally, and the bag helps catch it

2000 grit wet sandpaper


First, carefully sand the Lodestone with the 2000 grit sandpaper – just a little. This step saves you time during polishing.

Then start polishing with the paste it inside the bag. I attached the magnet to one of my finger magnets so I could feel the heat generated while polishing. It can heat up really quickly, and you want to avoid that.

Polish only until it’s shiny, but make sure you can still faintly see the transition from the sandblasted surface to the polished side. Don’t remove too much material!

Afterwards, clean it thoroughly. Wash it with soap

scrub it hard. You want to remove all remaining polishing paste. Then clean it with alcohol, and to be sure, repeat the cleaning process.

I used the Lodestone 4825 in this article but it works the same way with the Lodestone 5830


Heres a cross-section of the 4825, so you can see how much casing you have to work with. The 5830 has the same wall strength.

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