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Old 27th March 2012, 11:21 PM   #1
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Location: Norlane; Geelong: Victoria: Australia
Default Mag-Lev turntable bench

I have just found an old style computer mainframe cabinet at the local recycle centre for $20- to hold all of the audio gear in one place.
Since it is big enough I think I may place the cheaper of my turntables inside this cabinet to make SWMBO happier.

I have found a local supplier of good neodymium magnets and I was thinking of buying 8 of the N35 ring magnets and making a floating plinth.
using the calculator here

K&J Magnetics - Repelling Magnet Calculator

I get a repelling force of 9kg per pair with a 1mm separation.
I have put in a tentative order for 4 pairs.

Thoughts??
I have a nice piece of 12mm acrylic that i was intending to use for another project and a lot of 32mm MDF.

This type of cupboard uses steel clips and the edge of the steel shelf to hold everything in place, I was thinking of screwing a thin steel angle to the edge of a slab of 32mm MDF for the TT shelf and using epoxy to glue the Neo magnet in place with a combination of the Perspex and 12mm MDF for the floating shelf.

The combination of 12mm MDF and 12mm Perspex weighs just on 3kg and the cheap Stanton TT ( the old ST8) weighs 8kg so leaving 20+ kilos of repulsive force.

If this is a valid project I'd like to order and pay for the magnets while I can get the current sale price of $7- each
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Last edited by Moondog55; 27th March 2012 at 11:23 PM. Reason: Spelling and punctuation
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Old 28th March 2012, 08:33 AM   #2
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Earnshaw's Theorem.

Look it up.
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Old 28th March 2012, 08:39 AM   #3
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Thanx.
So I do need the restraining vertical walls.
OK; its a cheap experiment.
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Old 28th March 2012, 10:25 AM   #4
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Cancelled order for magnets
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Old 30th March 2012, 06:04 AM   #5
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4 of these might do it:

Crealev Magnetic Levitation Technology CLM2

http://www.youtube.com/watch?v=jxkpp1ypgbQ

http://www.youtube.com/watch?v=OEExd0wlsPo
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