mini neodymium magnets flipping polarity?
I have been successfully pausing prints to install mini magnets.
In the first attempt, some of the magnets were opposing each other and so I thought I was not paying enough attention to correctly orientate them
On the second run, I made sure that they were correctly installed (or at least I think so) but to my dismay, some of then also flipped.
Please tell I am just losing it when doing basic assembly or is there something weird going on when the printer head traverses over the magnets (ie, electric currents, magnetic field??) casing the fields to flip.
I must admit that I am not handling the magnets with care, ie, I use a pliers to pry them apart etc but this would hardly cause polarity flip?
RE: mini neodymium magnets flipping polarity?
Magnets are not going to flip polarity I the sort of field you are going to generate at home. The worst that could happen is reducing their strength but even doing that to a significant amount is unlikely
RE: mini neodymium magnets flipping polarity?
I have been successfully pausing prints to install mini magnets.
In the first attempt, some of the magnets were opposing each other and so I thought I was not paying enough attention to correctly orientate them
On the second run, I made sure that they were correctly installed (or at least I think so) but to my dismay, some of then also flipped.
Please tell I am just losing it when doing basic assembly or is there something weird going on when the printer head traverses over the magnets (ie, electric currents, magnetic field??) casing the fields to flip.
I must admit that I am not handling the magnets with care, ie, I use a pliers to pry them apart etc but this would hardly cause polarity flip?
If you are inserting magnets on a print during pause, if you are still close to the build plate, keep in mind that there is magnetic field in place below your printed object. Magnets will not flip their polarity but they might flip physically around in interaction with that magnetic field from the build plate. What I do, if possible, is to counter inserted magnets with a 2nd magnet on the outside, to make sure it stays where it is supposed to be in the orientation it is supposed to be in.
If you use hardened steel nozzles, they are also magnetic and could cause inserted magnets to move.
Mk3s MMU2s, Voron 0.1, Voron 2.4
RE:
If you have a force in the house that makes those magnets flip polarity, you may have bigger problems...
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
RE: mini neodymium magnets flipping polarity?
It'd be difficult enough to flip a "normal" magnet, but neodymium magnets have a preferred magnetization direction set during manufacturing. I don't know exactly what sort of field would be required to reverse the magnetization, but your printer would not survive. I expect your magnets have physically flipped over without you noticing.