Thanks Lumen for the clairification and experimentations.
Quote from floor earlier in this topic
"The sliding fixtures used must be rigid before you can get good
results.
Flexing of the magnets from their positions can mess things up
quicker than just about any thing else. Powerful neo magnets
require high precision / very strong fixtures.
Use of ceramic magnets recommended.
There is a ratio between the surface area magnets and their flux
density. Yes
Use of ceramic magnets recommended.
Small and yet powerful magnets (neos) are very difficult to align
precisely enough to get good results.
A larger surface area of the magnets makes a workable alignment
easier, because it allows for more margin of error in alignment.
example
A miss alignment of 1/16 inch off, out of a 1 inch by 1 inch surface
area, is off by 1/16.
A miss alignment of 1/16 inch off, out of a 2 inch by 2 inch surface
area, is like being off by 1/32 if the magnet were instead, a 1 inch
by 1 inch surface area.
A miss alignment by 1/32 inch might be well within a tolerable / workable
limit when using 1 and 7/8 inch by 5/8 inch surface area ceramic magnets.
If instead, one were using 1/2 inch by 3/8 inch, n48 magnets, the precision
in alignment might need to be within one thousandths of an inch !
Also, the alignment precision needed, is somewhat dependent upon which
magnet configuration / method / device you are using.
https://overunity.com/16954/magnets-motion-and-measurement/dlattach/attach/169684/ regards
floor" END QUOTE
Note:
When my ceramic magnets are aligned so that the attracting and repelling forces are in a near balance, new forces arise due to magnetic domain re-orientations. They are along that same balanced vector, and become noticeable as a WEAK stickiness to the shield magnet.
When using ceramic magnets, those undesirable / sticky forces have only arisen while the
magnets are at very close proprieties.
I believe that because magnetic force increases very sharply at the final / very near distance, that this is the only point at which the field strength becomes great enough to significantly reorient some magnetic domains. I did some tests along these lines and they seemed to verify this theory.
I don't how the neos behave in this respect.
I don't have any experience in this regard when it comes to Neo magnets.
interested to see more of your tests / experiments
regards
floor