Neodymium Magnets: Difference between revisions

From Open Source Ecology
Jump to navigation Jump to search
No edit summary
No edit summary
Line 12: Line 12:
*7 cents 10x2 HK n52 (looks like 1/16" thickness) - [http://www.ebay.com/itm/100pcs-Super-Strong-Disc-Magnets-10mm-x-2mm-Rare-Earth-Neodymium-NdFeB-N52-Grade-/351897015036?tfrom=400920139676&tpos=top&ttype=price&talgo=undefined]. While this looks cheaper, this is not because of the lower strength of 10x2.
*7 cents 10x2 HK n52 (looks like 1/16" thickness) - [http://www.ebay.com/itm/100pcs-Super-Strong-Disc-Magnets-10mm-x-2mm-Rare-Earth-Neodymium-NdFeB-N52-Grade-/351897015036?tfrom=400920139676&tpos=top&ttype=price&talgo=undefined]. While this looks cheaper, this is not because of the lower strength of 10x2.
*11 cents 12x2 n52 - [http://www.ebay.com/itm/25Pcs-N52-12mm-x-2mm-Super-Strong-Round-Disc-Magnets-Rare-Earth-Neodymium-Magnet/400920139676?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3Deb7ce3be4e7b4ff98173fa124a0aa5c3%26pid%3D100338%26rk%3D3%26rkt%3D30%26mehot%3Dpp%26sd%3D112265191779]
*11 cents 12x2 n52 - [http://www.ebay.com/itm/25Pcs-N52-12mm-x-2mm-Super-Strong-Round-Disc-Magnets-Rare-Earth-Neodymium-Magnet/400920139676?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3Deb7ce3be4e7b4ff98173fa124a0aa5c3%26pid%3D100338%26rk%3D3%26rkt%3D30%26mehot%3Dpp%26sd%3D112265191779]
*18 cents 20x10x2 n52- [http://www.ebay.com/itm/20-50-100-200Pcs-Strong-Block-Fridge-Magnet-N35-Rare-Earth-Neodymium-20-x10-x2mm/182395342217?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3De7b7bd9e81d0453ebd066048d56e951f%26pid%3D100338%26rk%3D17%26rkt%3D30%26sd%3D171900418568&var=484970185331]
*16 cents 12x3 n50 - [http://www.ebay.com/itm/Hot-12mm-x-3mm-50Pcs-100Pcs-Strong-Round-Disc-Magnets-Rare-Earth-Neodymium-N50/291945201588?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3Ddf591db2f8254cea9fe733c6b738ebaf%26pid%3D100338%26rk%3D1%26rkt%3D30%26sd%3D331967589024]
*16 cents 12x3 n50 - [http://www.ebay.com/itm/Hot-12mm-x-3mm-50Pcs-100Pcs-Strong-Round-Disc-Magnets-Rare-Earth-Neodymium-N50/291945201588?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3Ddf591db2f8254cea9fe733c6b738ebaf%26pid%3D100338%26rk%3D1%26rkt%3D30%26sd%3D331967589024]
*'''12 cents 12x3 n50 china''' - [http://www.ebay.com/itm/like/222263882733?lpid=82&chn=ps&ul_noapp=true]
*'''12 cents 12x3 n50 china''' - [http://www.ebay.com/itm/like/222263882733?lpid=82&chn=ps&ul_noapp=true]
*'''14 cents 12x3 n50 china''' - [http://www.ebay.com/itm/100pcs-Neodymium-Disc-Mini-12mm-X-3mm-Rare-Earth-N50-Strong-Magnets-Craft-Models/291501924915?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3D59fcd909da5a4f2cbcb0ee6cb55e2d39%26pid%3D100338%26rk%3D9%26rkt%3D27%26sd%3D191980289679]
*'''14 cents 12x3 n50 china''' - [http://www.ebay.com/itm/100pcs-Neodymium-Disc-Mini-12mm-X-3mm-Rare-Earth-N50-Strong-Magnets-Craft-Models/291501924915?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3D59fcd909da5a4f2cbcb0ee6cb55e2d39%26pid%3D100338%26rk%3D9%26rkt%3D27%26sd%3D191980289679]
*34 cents 25x2 n35 china - [http://www.ebay.com/itm/Lot-Super-Strong-25-mm-x-2-mm-Round-Disc-Magnets-Rare-Earth-Neodymium-Magnet-N35-/301430690192?var=&hash=item462eab5190:m:mla63A5qUOPg4YctFtOmC8Q]
 
*2.6 cents 6x1.5 n35 china - [http://www.ebay.com/itm/200PCS-Strong-Rare-Earth-Neodymium-Disc-Magnets-6-x-1-5-mm-1-4-x-1-16-inch-N35/271522371681?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D2220071%26algo%3DSIC.MBE%26ao%3D2%26asc%3D20131003132420%26meid%3Dad1a88d1d593409e9551e791e3eafba5%26pid%3D100005%26rk%3D6%26rkt%3D6%26sd%3D262826580902]


=Strength=
=Strength=

Revision as of 03:43, 6 April 2017

D3D uses 12mm x 3mm neodymium N52 magnets to hold axes to the frame.

Cost

  • 30 cents Brooklyn seller - [1]
  • 40 cents - 1/2" - [2]
  • 10 cents - 10x2 N50 - [3]
  • 30c 1/2" [4]
  • 40 cents 12x3 n52 - [5]
  • 17 cents USA 12x3 n35 - [6]
  • 17 cents 12x3 from china n52 - [7]
  • 28 cents 12x3 @ 1000 from UK n52 - [8]. This appears to be the best option.
  • 7 cents 10x2 HK n52 (looks like 1/16" thickness) - [9]. While this looks cheaper, this is not because of the lower strength of 10x2.
  • 11 cents 12x2 n52 - [10]
  • 16 cents 12x3 n50 - [11]
  • 12 cents 12x3 n50 china - [12]
  • 14 cents 12x3 n50 china - [13]


Strength

  • 12x3mm appears to be 8 lb - [14]
  • 10x3mm is 5.5 lb - [15]
  • 20x10x2mm is 4.8 lb - [16]
  • 10x2mm n52 is 2.6 lb - [17]
  • 12x2mm n52 is 3.8 lb - [18] - note - this is probably 1/16", or 1/2 the pull force of the 1/8" version (3 mm)
  • 6x3mm n52 is 2.9 lb - [19]
  • 6x6mm n52 is 4.2 lb - [20]
  • 25x2mm n42 is 6.8 lb -[21]
  • 6x1.5mm n35 - 1 lb - [22]

Notes

  • 2 mm compared to 3 mm appears to be 1/2 as strong. 2 mm is really 1.6 mm, of 1/16", compared to 1/8", or 3 mm. That makes sense.
  • Thus, it's more favorable to go with 3mm thickness.

Tested

  • Ebay [23] - 25 for $11 - 48 cents.

Links

Retrieved from "https://wiki.opensourceecology.org/index.php?title=Neodymium_Magnets&oldid=150297"