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2010-04-12 06:37:16 (6017 views) Small incident at the labs almost turned major. Let's go with order.
Just received the special neodymium magnets we ordered last week (1 square cm x 1mm thickness). They are strong. Very strong. Too strong. This is the HIGHEST grade neodymium that can be produced. They don't sell these in shops - you have to custom make them because at this strength they are brittle - in fact some broke in half being quite thin.
We compared them with the round magnets that David (rubber strap guy) supplied. The purpose for ordering these was to check if stronger magnets can make the conductive strip method viable.
Well - both types are very strong, except the ones we have produced have the same strength with half the thickness. The experiment did not yield any significant improvement, aside from the realization that having a small layer of just about anything between the magnets slashes their strength... The magnets David supplied are very strong, but because they don't make contact directly they don't stick very well. This is not the only problem with the conductive strips so - whatever.
Now for the substantial news. These magnets stick to solder. They can therefore be soldered on directly, before the heat has a chance to damage their magnetic properties.
Gotta watch out - as they tend to jump at you because the soldering iron's tip attracts them and you don't want to have molten solder on them when this happens.
We are proud to announce that with some tweaking, two neodymium magnets are perfect electrode attachments! One is connected directly to the wire going to the DL2000. The other one is on the other side to ensure contact. That's it. Simple, beautiful, rugged and functional. Especially good for people who have chastity devices completely enclosing the penis area because the attachment becomes very secure this way. But it's a great alternative for CBx000 devices as well. It requires no hole on the cage (which the CB6000 doesn't have).
As you can see, the stacked magnets in the picture are strong enough to stick across a finger, and of course the scrotum and frenum skin are much easier to pinch, being thinner. With magnets of this diameter only a little material is required on each side for proper contact under any circumstance (except if the wires are pulled with some serious strength).
Most likely the magnet diameter has to be larger - at least 1.5cm radius is needed to guarantee perfect contact and suppress the tingling feeling of current going through the skin, which arises when the contact point is too small.
Now to the incident, which happened because "someone" was dumb enough to test with TWO of the square magnets on each side of the frenum (about 0.5mm thickness skin there). Very easy and painless to put them on, almost impossible to get them off. Started cutting off circulation after a few seconds, removal was impossibly painful even with copious amounts of oil and various techniques. What didn't help is that the way they ended up sticking, skin went all the way through the magnets and formed a bulge on the other side, so sliding them off didn't work as the bulge got pinched tighter and tighter.
After a few aborted trials, started sweating profusely and realized this was a real emergency. Thought "a metal coin could give a larger contact point to pull" - but the coin only flew towards the magnets from an inch away hitting them with enough force to cause even more pain.
This is possibly a very new and very cruel torture device...
When the magnets are positioned, initially, they approach the contact point parallel to each other. So the pressure is applied homogeneously and spread out across the approximately 1 square centimeter of skin. However, because they stick together with such force, removal requires using one's fingernails to pull them apart - and by doing so necessarily one side of the magnet is raised first, which makes the full strength of the magnets end up pushing on a very tiny area on the other side. This is most likely too painful to accomplish and there's no choice but to give up. Removal is way, way more painful than any electric pulse coming from the DL2000.
Eventually a combination of mineral oil and panic did the trick, not sure exactly how. The magnets came off, but not before leaving a definite mark in the skin and even a tiny red dot.
The major scientific mistake here has been to neglect the fact that the strength of a magnet decays proportionally to the square of the distance! That means that if the magnets are pretty damn strong when they are a few millimeters apart, when they are 0.5 millimeters apart they will be mega-strong! The only reason they can be detached manually at all is that they can be made to slide. When sliding is not possible these things aren't coming off.
Well, nobody said opening up the male management sector was going to be pain-free - just imagine all the accidents that people had during the gold rush or when the first oil wells were dug :)
Bottom line: today we discovered that if you've got one soldered neodymium magnet on one side and another neodymium magnet on the other side, if they are about 1.5cm in radius or even better 2cm - and if you can find a balance between strength and discomfort, you've made yourself a perfect contact point that does not require any rubber or anything else! Dirt cheap and very, very effective.
How does this change our plans? Doesn't very much. If at all possible, we should offer two kinds of cables. The first kind has a thick copper core, which provides strength and stability. This type is ideal for mounting the DL2000 the usual way on a CBx000 device with metal electrodes. The other kind should have a small copper core so that it is a lot more flexible. This will be good for the magnet method, because most likely the cable has to make sharp turns or at any rate be flexible enough to reach the right spot and not pull because of its rigidity.
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I'm excited with the new prospect, but don't completely understand the logiistics of it.
This ensures good contact at all times between the cable and the skin. Just need to fine tune the magnets size and strength so that they don't pinch too hard and the contact is large enough for the current delivered.