Revision as of 03:47, 6 April 2017

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

Cost

28 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.
16 cents 12x3 n50 - [10]
12 cents 12x3 n50 china - [11]
14 cents 12x3 n50 china - [12]
11 cents 12x3 China - [13]

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]

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.

@@ Line 2: / Line 2: @@
 =Cost=
-*'''30 cents Brooklyn seller - [http://www.ebay.com/itm/25-50-100pc-12mm-x-3mm-1-2-x-1-8-N52-Strong-Rare-Earth-Neodymium-Magnet-Disc-/302030262749?var=&hash=item46526811dd:m:mwInpFTJNe0z38bJt7A8xag]'''
+*'''28 cents Brooklyn seller - [http://www.ebay.com/itm/25-50-100pc-12mm-x-3mm-1-2-x-1-8-N52-Strong-Rare-Earth-Neodymium-Magnet-Disc-/302030262749?var=&hash=item46526811dd:m:mwInpFTJNe0z38bJt7A8xag]'''
 *40 cents - 1/2" - [https://www.amazon.com/gp/aw/d/B01LZ2XRML/ref=mp_s_a_1_1?ie=UTF8&qid=1484023257&sr=8-1&pi=AC_SX236_SY340_FMwebp_QL65&keywords=100+pcs+super+magnet]
 *10 cents - 10x2 N50 - [https://www.wish.com/m/c/5580d91a1caadc370a9708be?hide_login_modal=true&from_ad=pla4&_force_country=US&gclid=CKuZp5fittECFYm3wAodF8EFqQ]