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Author Topic: My Bendini magnet in the wrong way - help please  (Read 7864 times)

zac123

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My Bendini magnet in the wrong way - help please
« on: July 30, 2011, 02:45:13 PM »
hi all,

i'm bought myself a little 3 pole bendini magnet motor just as a little garage project to help me learn the basics but unfortunately i put one of my magnets in round the wrong way using super glue.

can anyone advise me the best way to get it out?

i tried acetone but i think the hole is too tight for the acetone to get down there.

many thanks
zac
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Low-Q

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Re: My Bendini magnet in the wrong way - help please
« Reply #1 on: July 30, 2011, 03:17:35 PM »
Heat up the aliminium with a butane torch so the hole expands. Probably the glue will go away too. Then you kan shake out the magnet or use another magnet to pull it out.

Vidar
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zac123

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Re: My Bendini magnet in the wrong way - help please
« Reply #2 on: July 30, 2011, 03:25:55 PM »
Quote from: Low-Q on July 30, 2011, 03:17:35 PM
Heat up the aliminium with a butane torch so the hole expands. Probably the glue will go away too. Then you kan shake out the magnet or use another magnet to pull it out.

Vidar

a ha, butane torch , yes i didnt think of that. thanks. i already thought of the magnet trick. i have rare earth magnets that should do the trick but i'll have to go a buy a butane torch from the local WICKES.

many thanks.
zac
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gyulasun

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Re: My Bendini magnet in the wrong way - help please
« Reply #3 on: July 30, 2011, 03:31:47 PM »

One notice: heating will unavoidable heat the magnet too and normal Neo magnets normally allowed to heat up 80°C, beyond that they gradually loose their strength.  Of course this is a smaller price than making another hub...
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Low-Q

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Re: My Bendini magnet in the wrong way - help please
« Reply #4 on: July 30, 2011, 03:32:16 PM »
You're welcome :)
Put a heatsink (another neodymium) on the magnet so it wont heat up as much so the magnet doesn't expand too.

Vidar
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zac123

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Re: My Bendini magnet in the wrong way - help please
« Reply #5 on: July 30, 2011, 04:04:35 PM »
ahh, now that might be tricky as i dont have another.

i feel an ebay search coming on.....
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zac123

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Re: My Bendini magnet in the wrong way - help please
« Reply #6 on: July 30, 2011, 08:00:37 PM »
yey! all done.

bought myself a mini butane torch from WICKES. i took a good 15 minutes to prize it out but it worked!

thanks again
zac
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Low-Q

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Re: My Bendini magnet in the wrong way - help please
« Reply #7 on: July 30, 2011, 09:47:25 PM »
Good to see that you didn't hold that flywheel with your fingers ;D

Good luck with your project!
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