Neodymium Magnets: Difference between revisions
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*30c 1/2" [http://m.ebay.com/itm/lot-100-50-12mm-X-3mm-Neodymium-Disc-Strong-Rare-Earth-N52-Small-Fridge-Magnets-/311723176686?_trkparms=aid%253D222007%2526algo%253DSIC.MBE%2526ao%253D1%2526asc%253D20150519202348%2526meid%253D5196238d003f49d09320ae4daf3a2736%2526pid%253D100408%2526rk%253D3%2526rkt%253D25%2526sd%253D311723176686&_trksid=p2056116.c100408.m2460&varId=610614211332] | *30c 1/2" [http://m.ebay.com/itm/lot-100-50-12mm-X-3mm-Neodymium-Disc-Strong-Rare-Earth-N52-Small-Fridge-Magnets-/311723176686?_trkparms=aid%253D222007%2526algo%253DSIC.MBE%2526ao%253D1%2526asc%253D20150519202348%2526meid%253D5196238d003f49d09320ae4daf3a2736%2526pid%253D100408%2526rk%253D3%2526rkt%253D25%2526sd%253D311723176686&_trksid=p2056116.c100408.m2460&varId=610614211332] | ||
*40 cents 12x3 n52 - [http://m.ebay.com/itm/311723176686?_trkparms=aid=222007&algo=SIC.MBE&ao=1&asc=20150313114020&meid=2bec8a47c571460fb13a5088eaad4b41&pid=100338&rk=7&rkt=30&mehot=pp&sd=181726068645&_trksid=p2141725.c100338.m3726&_mwBanner=1] | *40 cents 12x3 n52 - [http://m.ebay.com/itm/311723176686?_trkparms=aid=222007&algo=SIC.MBE&ao=1&asc=20150313114020&meid=2bec8a47c571460fb13a5088eaad4b41&pid=100338&rk=7&rkt=30&mehot=pp&sd=181726068645&_trksid=p2141725.c100338.m3726&_mwBanner=1] | ||
*17 cents USA 12x3 '''n35''' - [http://www.ebay.com/itm/lot-100-50-12mm-X-3mm-Neodymium-Disc-Strong-Rare-Earth-N35-Small-Fridge-Magnets/191570155765?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3D59fcd909da5a4f2cbcb0ee6cb55e2d39%26pid%3D100338%26rk%3D10%26rkt%3D27%26mehot%3Dpp%26sd%3D191980289679&var=490648593107] | *17 cents USA 12x3 '''n35''' - [http://www.ebay.com/itm/lot-100-50-12mm-X-3mm-Neodymium-Disc-Strong-Rare-Earth-N35-Small-Fridge-Magnets/191570155765?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3D59fcd909da5a4f2cbcb0ee6cb55e2d39%26pid%3D100338%26rk%3D10%26rkt%3D27%26mehot%3Dpp%26sd%3D191980289679&var=490648593107] | ||
*17 cents 12x3 from china n52 - [http://www.ebay.com/itm/10-100pcs-Neodymium-Disc-Super-Strong-Rare-Earth-N50-Fridge-Magnets-12mm-X-3mm/271966141120?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3Da4e551f3afe442f6ae95249f8d99f4fc%26pid%3D100338%26rk%3D3%26rkt%3D30%26mehot%3Dag%26sd%3D131584348169&var=570794963223] | *17 cents 12x3 from china n52 - [http://www.ebay.com/itm/10-100pcs-Neodymium-Disc-Super-Strong-Rare-Earth-N50-Fridge-Magnets-12mm-X-3mm/271966141120?_trksid=p2141725.c100338.m3726&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3Da4e551f3afe442f6ae95249f8d99f4fc%26pid%3D100338%26rk%3D3%26rkt%3D30%26mehot%3Dag%26sd%3D131584348169&var=570794963223] | ||
Revision as of 03:40, 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]
- 18 cents 20x10x2 n52- [11]
- 16 cents 12x3 n50 - [12]
- 12 cents 12x3 n50 china - [13]
- 14 cents 12x3 n50 china - [14]
- 34 cents 25x2 n35 china - [15]
- 2.6 cents 6x1.5 n35 china - [16]
Strength
- 12x3mm appears to be 8 lb - [17]
- 10x3mm is 5.5 lb - [18]
- 20x10x2mm is 4.8 lb - [19]
- 10x2mm n52 is 2.6 lb - [20]
- 12x2mm n52 is 3.8 lb - [21] - 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 - [22]
- 6x6mm n52 is 4.2 lb - [23]
- 25x2mm n42 is 6.8 lb -[24]
- 6x1.5mm n35 - 1 lb - [25]
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 [26] - 25 for $11 - 48 cents.