Eclipse pot magnets were tapped.

My first thought was to wonder if drilling the magnet would affect its magnetism.

I'd try putting a few inexpensive super magnets (like these on ebay) between the existing magnetic base and the vertical surface. Read the instructions if you get any, the attraction between two of them is enough to nip flesh.

I wouldn't bother trying to modify an existing magnet, especially a modern one. The one I experimented on from a Microwave Oven was hard enough to ruin a file and very brittle. Also, a good way to destroy a magnet is to bash it about or heat it up.

Dave

Edited By SillyOldDuffer on 12/06/2017 17:50:31

If you have any old computer hard drives, you will find they contain two very strong magnets. Don't try to separate them from their backing pieces though, as you will obviously destroy the plating/coating, and they then start to break down.

The platters themselves are often usable as surface plated mirrors for viewing nooks and crannies.

Ooh, I'll have to try that.

When I worked at Mullard Magnetic Components in the 60's where they made besides other materials, 'steel' magnets, you could get a round bar magnet say 3/4" dia x 4" long hold it in your palm and break it in two with a hammer without hurting yourself it was so brittle, just like Seaside Rock, when tapped holes were required the magnets would be cast with a plain hole to suit a threaded insert.

I used the description 'steel' only because they looked like steel, their composition was very different.

John