cerasi
Comments
-
@extrion76 Wow, they respond quickly. Good to see that we don't have to worry about much of a price difference. @Jackthetripper It's totally possible that using a magnet that's longer than it is wide could increase sensitivity. A long magnet will want to rotate like a compass needle when it's in a field, so the ends would…
-
It is true that there are a number of other factors involved in magnet sensitivity. I look forward to discussing these factors more and improving our theoretical model (at another time and thread), and seeing how different magnets perform. Best of luck with the group buy, and the procedures!
-
That sounds like a pretty great deal. I wonder if they can make 1/16" x 1/16" (~1.6mm x 1.6mm) magnets as well. I've posted quite a bit on why I think that smaller will be better, down to about 1 mm on a side. This could be great opportunity to buy and test magnets that would likely be more sensitive and safer. @extrion76…
-
@Sigiel Thank you, that's a very generous offer. We can't know for sure that these magnets will work well, because no one has tried them yet. But we know that larger magnets work, and smaller magnets (magnetic tattoos) work, so these will probably work too. They'll probably work even better than the other magnets people…
-
A magnet degrading inside a finger is not good. I heard Quinn Norton talk about how her magnet started degrading, and that now she might never be able to get an MRI because there could be neodymium floating around somewhere in her body (magnetic livers are bad). She had her implant removed by a doctor, I believe. If I were…
-
I agree that these are NOT the best magnets to use, because they are bulky and weak. Here's the argument for smaller magnets (such as 1mm diameter x 0.5 mm radius): "A smaller magnet will fit more easily in the finger, and be less likely to damage the finger if it gets crushed or hit. It can be injected with a small…
-
There are a few ways we can make this work. 1) Someone who is willing to front the money could order the magnets, and then resell as many of them as possible (without a guarantee they'll all be bought). 2) A small group of people could split the cost of the magnets, and then try to resell them to others. This would require…
-
That's great! Thanks for contacting them. I was thinking that one potential problem with tiny magnets is that if they're small enough, one could be accidentally injected into the bloodstream and that would be bad. However, I did a bit of research and I THINK the blood vessels in the fingertips are all at least slightly…
-
Welcome! I've been in touch with that company - they don't have any suitable magnets in stock, but we could place a custom order. I'd rather not contact them again (I think I used up their patience by asking stupid questions), but maybe if @PsynFyr or someone else wants to email them and ask for a quote, we could get a…
-
The parylene coatings on the magnets I've asked about are 20 microns thick. I guess we could find out the density of parylene and calculate how much mass it would add based on the surface area of the magnet, but for now I'm willing to ignore that added mass. As an update: I like the idea of tiny, bioproofed magnets that…
-
I would not personally recommend sugru. It's not rated as food-safe, let alone biocompatible, and I wouldn't trust it to not break down. There were some problems with Haworth's original silicone coated magnets, but I hear the new ones are very reliable. Parylene coatings are very thin (measured in microns) and have…
-
I imagine that if you used a very small magnet, there would be less risk of it cracking or mashing up tissue. I'm not sure how magnet size affects sensitivity - I'd guess that although a smaller magnet would experience less force/torque due to a field, it would also move around more easily inside the finger. So finding a…
-
I am generally good at designing and making things, in many different contexts. I'm getting an undergraduate degree in electrical engineering, with a focus on biological applications, so I'll be learning some things that are very relevant to biohacking. Some skills I can offer now are:* basic electronics, and experience…
-
@Oak: If you wanted to feel a field generated by DC, you could make a solenoid by coiling a lot of wire (maybe around an iron nail), and then hook that up to a AA battery. A steady current will generate a constant magnetic field, so it should feel just the same as a permanent magnet. It might be fun to experiment with,…
-
This is a pretty minor thing, but I noticed that when I signed up I was asked to put down my gender as either male or female. I'm guessing that information isn't actually used for anything, but it seems a little strange to me to ask people to identify themselves as part of the gender binary before they can participate in…
-
Hi! I've been lurking around here for a while, and I've decided to finally make an account and join the community. @MrWizrd: I'm interested in buying a few magnets. Do you still have any available? If so, how can we arrange payment and shipping?