China Neodymium And Ferrite Magnets Manufacturer & Supplier 
In many magnetic adsorption structures, sensors, electronic components, or handicrafts, magnets are often embedded in holes to fix their position, achieve adsorption or detection functions. But when the magnet needs to be repaired or replaced, it is often found that this small magnet is difficult to remove. So, how can the magnet embedded in the hole be safely and effectively removed? Below are several feasible methods, hoping to help you.
Before starting, the first thing to determine is whether the magnet is glued in or mechanically pressed in (controlling the positive and negative tolerances of the magnet). Plastic shells and electronic products are usually bonded internally through adhesive bonding, while wooden substrates are usually fixed with screws. Some products may also use magnetic attraction and limit structures.
Removal Methods for Adhesive-Bonded Magnets
This common type of adhesive-bonded magnet (typically powerful magnets like neodymium iron boron) requires removal techniques tailored to the bonding surface and adhesive type. For cyanoacrylate adhesives like Super Glue, acetone (nail polish remover) can be used. For epoxy resin, try high-concentration alcohol or specialized adhesive removers.
Alternatively, apply heat evenly to the area around the magnet using a heat gun. Heat softens most adhesives (e.g., hot melt glue, certain epoxies). If preserving the magnet's magnetic properties is essential, verify its temperature tolerance—excessive heat may demagnetize it.
Removal Method for Glue-Free Press-Fit Magnets
This can be achieved by using a larger, stronger magnet to pull it out, or by applying sufficient force from the back to cause the magnet to pop out.
Magnet in the hole
Removal Method for Screw-Mounted Magnets
This is relatively straightforward—simply loosen the screws with a screwdriver.
Removal Method for Snap-Fit/Spring-Retained Magnets
Press or pull the snap-fit area to release the spring before removal.
If the magnet needs to be reinstalled or preserved intact, handle with care. For example, place a soft cloth between the magnet and the surface during removal, and mark the N/S poles.
In short, to remove a magnet embedded in a hole, first determine how it's secured, then apply the appropriate solution. If unsure, start with the gentlest method (such as tapping lightly) and gradually escalate to more forceful measures to avoid damaging the surrounding hole or object.
Relevant magnet selection;