The switchable magnets is the most satisfactory project I have built to date.
What makes it so special is the fact I used the Nikola Tesla handwritten notes, which I followed despite they didn't seem to follow the common logic or sense. And towards my great surprise, the switchable magnet works and it exceeded my expectations.
8 1 cubic centimeter NeoDymium magnets are the heart of this device, combined with 2 1 square centimeter profile iron bars, around 7 cm long, serving as a frame and the magnetic field loops conductor and amplifier.
The Nikola Tesla design is different from the most popular switchable magnets on the market, and the magnets arrangement is totally different, which is why it didn't make a scientific sense at first glance. Now I do fully understand how it works, and I take my hat off to the genius of Sir Nikola Tesla. His handwritten notes were a bit cryptic as well, but I'm happy to have figured them out, and after numerous prototypes and thorough testing, I found the best proportions and configuration, to achieve the best magnetic field amplification.
A single switchable magnet can lift up to 6 kg = 13.2 lbs. And it can withhold the force at 90 degrees on the steel surface (table saw / bandsaw / drill press) up to 6.7 kg = 15 lbs. Of course combining more switchable magnets will multiply the holding force capabilities.
In this video I demonstrate the real life test results, both of the lifting and 90 degree resistance to sliding on the steel surface.
I also listed quite a number of possible applications for this amazing tool.
Because it is fully made out of metal: aluminum, stainless steel, mild steel bars, neodymium magnets, these switchable magnets are welding friendly, which expands their functionality even further than just woodworking machinery assistance, such as jigs / fixtures / magnetic fences / feather boards / miter gauges / stop blocks / cut delimiters and whatever your imagination brings to your mind.
IF you don't have time or tools to make them, you can buy them off the shelf on:
Alternatively you can purchase the build plans in PDF exported from Sketchup, showing in details every angle, profile, dimensions, components used, assembly instructions and so on:
The full build video is coming at the end of January 2022, so depending on when you are reading this description, it might be already available.
I truly enjoyed this project, as it brought limitless satisfaction to me.
I spent a lot of time and resources while prototyping this build and making the final product, so your purchase of the build plans is greatly appreciated.
Thank you so much for watching and your support!