r/Magnets

1/15 Magnet Sheets Not Working - Please Help

If it’s not clear from the video, I’ve measured out 15 spots across 2 bookshelves to hold some steelbooks. They all work, except for this one sheet that will not work. It worked perfectly fine before I affixed it to the back of the shelving unit. I used a marked ruler so all of the sheets should be relatively the same distance from each other. But I did cut all of the sheets in half, so the edges aren’t straight or symmetrical. I’m not sure if it’s visible but there’s a small tear in the backing of the unit near the upper-left portion of the magnet sheet that isn’t working. Any help would be greatly appreciated! I have 2 more bookshelves I’d like to do this with, but it does not look good when they don’t work, and the backing is like paper levels of fragile, so trying to remove it without ripping the unit apart may not be possible.

u/adburgan — 1 day ago

Strongest magnet for MagSafe sized circle?

I’m trying to find a very strong magnet to use on the back of a tablet to connect it to a MagSafe mount. I’ve tried the circles that are meant to be put on the back of a phone, but even the ones that are actually magnetic themselves don’t produce enough magnetic pull to hold the weight of the tablet up. I really prefer to do this with magnets vs the arm clamp things because it’s so much easier to pick up the tablet and move it, plus the wall mount that I have easily can connect to essentially any flat surface or wall in my house because of the industrial walls.

I don’t care about the aesthetics at this point, a thick magnet is fine. I just can’t find one that is approximately the size of a MagSafe circle to make good connection. I previously tried ordering very strong, smaller magnets, and had planned to glue them in a circle, but they had so much repulsion between the magnets themselves that I could never get them to stick in place without displacing some. Something like this has to exist, right?! I swear I have searched the Internet to hell and back and I’m coming up short. I just want to be confident the tablet won’t come crashing down unexpectedly!

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u/blessyourheart9 — 2 days ago
▲ 47 r/Magnets+1 crossposts

Finally! Magnetize any Gridfinity

I'm proud to share with you my in-slicer modifier model to add side-loaded magnets to any existing Gridfinity model. No glue, no pesky snap-fit tolerances with magnets not fitting or falling out again, no mid-print pausing only to realize you got the polarity wrong.

https://www.printables.com/model/1810976-magnetize-any-gridfinity

  • Standard 6 × 2 mm magnets: compatible with the popular cylindrical size
  • No print pauses: print the whole object in one go
  • No glue: magnets snap securely into place
  • Secure horizontal retention: more reliable than vertical press-fit slots
  • Compliant-mechanism design: flexible features hold the magnet in place
  • Maximum magnetic strength: only 0.1 mm between magnet and target
  • Removable magnets: simply push them back out
  • Gridfinity-compliant: follows the standard magnet position
  • No CAD required: add the negative volume directly in your slicer
  • Works with STL, 3MF, STEP and more: anything your slicer can handle
  • Fully modular: add slots only where you actually need them
  • Optional shell included: for compatibility with skeletonized / shelled bins
  • Support-free printing: optimised for clean bridging
  • Based: Compatible with any Gridfinity base

What do you think? What will you magnetize? What can I improve?

u/gloda — 5 days ago

Specific type of magnets for othello board

Hi!

I'm planning on making a custom othello/reversi board as a present, and would've loved to add magnets into the board and into the pawns, so they'd stay in place as the game goes on.

That's where my question comes in, because of the way the game is played, the pawns will be turned on themselves on a same square, so, for the magnets to stick no matter which side of the pawn is turned on its square is there a specific type of magnet I should chose for this ?

Thanks in avance ! Have a good day :)

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u/gig0t — 5 days ago
▲ 54 r/Magnets+1 crossposts

These magnets are rad but…

Having to climb in this thing to wipe chips off them after every pass gets old quick. That’s half of a 69” piston ring in case anybody is wondering.

u/brocjames — 10 days ago

Magnetite Hourglass Induction: Exploring Electromagnetic Principles?

Could I generate an electric current using an hourglass filled with magnetite sand falling through a magnetic field and a copper coil wrapped around the narrow center?

u/MillerLights — 7 days ago
▲ 10 r/Magnets

Proud of my new magnet board ☺️

Made a magnet board for my desk with magnets collected from various parts of Japan, Hongkong and India on my travels. Just wanted to share. Thank you for visiting! 😊😊

u/AbaloneAny7788 — 10 days ago
▲ 2 r/Magnets+1 crossposts

Who should I give really niche fridge magnets to?

I've got a habit of collecting fridge magnets everywhere I travel and giving them to friends and family. Most of them are iconic enough that you instantly recognise what place this represents.

And then at this place someone makes fridge magnets based on old town tile designs - arguably the least distinctive/memorable thing about the place.

Looks like it's mostly for history/architecture buffs. Why would anyone else buy this? Am I missing something?
And who should I get one of these tile magnets for?

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u/Pretend_Smoke_2795 — 11 days ago
▲ 3 r/Magnets+1 crossposts

Using magnets to cure hay-fever

Hi guys so I found out that pollen is negatively charged and was wondering - what if you wore a negatively charged magnet on your shirt that creates a repellant force field around your face. Wouldn't that stop hay-fever for good. What are your thoughts on this?

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u/josiahlonge — 13 days ago