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27th March 2012, 11:21 PM
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#1 |
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Dilletante, tinkerer and beggathoner supreme
diyAudio Member
Join Date: Jun 2007
Location: Norlane; Geelong: Victoria: Australia
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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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QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING" Last edited by Moondog55; 27th March 2012 at 11:23 PM. Reason: Spelling and punctuation |
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28th March 2012, 08:33 AM
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#2 |
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diyAudio Member
Join Date: Feb 2006
Location: Geelong
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Earnshaw's Theorem.
Look it up. |
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28th March 2012, 08:39 AM
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#3 |
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Dilletante, tinkerer and beggathoner supreme
diyAudio Member
Join Date: Jun 2007
Location: Norlane; Geelong: Victoria: Australia
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Thanx.
So I do need the restraining vertical walls. OK; its a cheap experiment.
__________________
QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING" |
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28th March 2012, 10:25 AM
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#4 |
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Dilletante, tinkerer and beggathoner supreme
diyAudio Member
Join Date: Jun 2007
Location: Norlane; Geelong: Victoria: Australia
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Cancelled order for magnets
__________________
QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING" |
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30th March 2012, 06:04 AM
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#5 |
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diyAudio Member
Join Date: Sep 2006
Location: Sunshine Coast Queensland Australia
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