Reddit reviews Wukong Fishing Magnet Double Sided Neodymium Magnet with Eyebolt, Combined 1700 LBS Pulling Force Super Strong Magnet for Magnetic Fishing, Treasure Hunting Underwater - 3.7" Diameter
We found 3 Reddit comments about Wukong Fishing Magnet Double Sided Neodymium Magnet with Eyebolt, Combined 1700 LBS Pulling Force Super Strong Magnet for Magnetic Fishing, Treasure Hunting Underwater - 3.7" Diameter. Here are the top ones, ranked by their Reddit score.
√ 【Powerful Magnet】 - 94mm diameter and 30mm thickness ,Double sided pulling force will up to 1700LBS(770KG) totally (each side 850lbs/385kg). Specifically designed for retrieving in river and magnetic fishing√ 【Double Sided Magnet】 - Unique design with double sided magnetic force, one magnet provide twice the surface area to catch targets. It is easy assembled with eye bolt screws directly into steel base.√【Multi Use Neodymium Magnet】 - Great for salvaged of various iron-containning nickel material underwater and good idea for magnet fishing, lifting, hanging, retrieving applications. Have fun to searching items like eyebolt, screws, hooks, fasteners and so on in your warehouse garage or yard.√ 【Best Coating】 - Ni+Cu+Ni Triple Layer Coated. The Best Coating Available, which Provides a Shiny and Rust Resistant Coated steel cup provides protection for the magnet and helps to prevent chipping or cracking.√ 【Customer service】- Keeping customers happy and satisfied is the most important for our business, our company provides refund or free replacement of the product in case of any queries.
pricy! https://www.amazon.com/dp/B07JPJ8GPP/ref=emc_b_5_t
Modern MRI magnets are coils of superconducting wire that are bathed in liquid helium... that's... a lot more trouble than it's worth going through here.
Though I guess you could find one of those old several ton permanent magnets they used to use (or sometimes use in those shittier "open MRI" machines). Even if you could get someone to sell it to you, expect a price tag in the tens of thousands range - the salvage price of the metal is already high enough up there, and transporting it is going to be an absolute bitch.
You'd be better off buying one of those heavy neodymium magnets from Amazon or eBay that have a several hundred pound load capacity. This guy is advertised at 1700lbs.
And I wouldn't even advise that, since high power magnets of any shape or size are actually fairly dangerous just to have lying around and are going to be shit at pulling nails since, you know, they're magnets and not the Magneto from the X-Men or whatever you're expecting to happen here. A magnetic nail puller would need to have an exceptionally high field strength in a very small area, which practically precludes permanent magnets and would require high enough currents to be both lethally dangerous and extremely awkward to maneuver around.
You can buy it direct from brutemagnetics.com but it's 60 USD shipping to Canada
There's also these: https://www.amazon.ca/Wukong-Neodymium-Combined-Magnetic-Underwater/dp/B07JPJ8GPP/