Where to get big magnet?

[dradttg]

Dear all,

I will be cleaning 200 kg of sand soon.

Can anyone tell me where I can get a big magnet?

Thank you.

[Ian]

Get it from an old speaker. The magnet is huge and powerfull!

Go to any car audio shop and ask for a spoilt speaker they don't want. Break it apart and walah! BIG MAGNET!!!

[dradttg]

Thanks Ian. I will try the shop.

Just in case, I cannot get. Can anyone tell me where to buy?

[Tanzy]

Sim Lim Tower. Buy old speakers and rip the magnet out.

[ah wa!]

Rip apart any spoilt harddisk drive and you'll obtain strong rare earth magnet free of charge!

[dradttg]

Thanks. I will tearing apart stuff in my house.

[Achilles Tang]

Rip apart any spoilt harddisk drive and you'll obtain strong rare earth magnet free of charge!

hmmm.... how much dismantling do I have to do? Which part is the magnet?

[typrobin]

issit necessary to clean sand with a magnet? how often do we need to do it? pls advise.......

[Achilles Tang]

How often? duh... everytime you drop metal filings in!

[andysho]

dun even know that wash sand have to use magnet~~` sia

maybe best bring the sand to some industry let them pour into a container and roll and roll , and then polish it sia

kekeke

[typrobin]

wah, getting complicated....metal fillings?? u mean those nutrients for the corals??

[Achilles Tang]

typrobin

Yeah... I feed a nail to my brain coral every day.

Seriously... do you even know what you're asking?

Are you very new to the hobby... suggest you read up the pinned topics in the New to the Hobby forum first before attempting to start a reef tank!

[andysho]

somtimes i wonder those corals led a better live then us, even the sand also need to use magnet sia

I wonder i eat a bowl of rice outside.. do i need to bring a mini magnet along, in case there are tiny metal fillings

inside that choke me

kkekeke

[dradttg]

I remember quite sometime ago. One of the Bro here washed his sand and found a lot of metal frags.

Hence, it would be better to do a thorough job for the first wash.

[weileong]

see what I removed from 16 bags of sand.

http://www.sgreefclub.com/forum/index.php?...ndpost&p=108397

[ah wa!]

hmmm.... how much dismantling do I have to do? Which part is the magnet?

it is quite a straight forward process. the magnet is located around the actuator arm-seen an old lp player before/it look similar to the read head of a lp player. you can alway use a metal spoon to detect the magnet. one problem you may face is that most harddisk drive use torx head screws or other types of security head screws so you need to have those special screwdriver in order to unscrew them.

the magnets are very strong so becareful when playing with them. you don't want to get your fresh between them.

[ryz]

hmm... SO much rust... what harm will it do if it remains in the sand? it will leech Iron? Fe2O3 harmful? Seems like a troublesome chore. ALl packs of sand have this much crap in them? I never even wash my sand When I first boughht them. Just dump into tank and let filter run. I'd like to think my sand is clean lol... Ina world on my own..

[ervine]

I TRIED to use the magnet but wah lau eh... damn tedious... not only tedious, my magnet was super weak... in the end gave up, just washed the sand and dumped it in....

[Tanzy]

Put your sand through a 1.5 Tesla Magnetic Resonance Imaging (MRI) scanner and VIOLA! Clean sand.

[weileong]

I TRIED to use the magnet but wah lau eh... damn tedious... not only tedious, my magnet was super weak... in the end gave up, just washed the sand and dumped it in....

Yes the process is super shiong especially if you're 16 bags to go thru.

took me quite a while actually 2 nights. First night 4 hrs spend.

2nd night I started at 5pm and when completed 6am already

But then I thought it's once off and since I can take the trouble to setup a marine tank might as well play safe and do every bit I can to make sure I setup correctly rather than the possiblity of having trouble later.

[arcanehacker]

Put your sand through a 1.5 Tesla Magnetic Resonance Imaging (MRI) scanner and VIOLA! Clean sand.

you people use every method on earth.. maybe someone can go to those car scrapyard and use the magnet they have there? More powerful..

[dradttg]

Yes the process is super shiong especially if you're 16 bags to go thru.

took me quite a while actually 2 nights. First night 4 hrs spend.

2nd night I started at 5pm and when completed 6am already

But then I thought it's once off and since I can take the trouble to setup a marine tank might as well play safe and do every bit I can to make sure I setup correctly rather than the possiblity of having trouble later.

I have 20 bags.

But now the biggest problem is to find things to rip apart.

Thinking of using electric wire wrapped around an iron rod.....if you see a article in the newspaper tomorrow, you know its me.

[arcanehacker]

I have 20 bags.

But now the biggest problem is to find things to rip apart.

Thinking of using electric wire wrapped around an iron rod.....if you see a article in the newspaper tomorrow, you know its me.

it should be a good idea but you must know how to rig one up..

You probably need some car batt for that too..

[weileong]

Go sim lim square and buy a big magnet, not worth that type of risk.

DC current won't work for electrical-magnet (if I got the term right), you need AC.