Wanted info/reviews on chalk holders? Qpod & etc

[sfleinen]

Do you mean like this:

Not really, you have it backwards -- you have the magnet on the chalk, and the steel on the clip. Glue the magnet to the clip instead, and glue a bit of steel onto the back of the chalk (e.g. from the bottom of a soup or coffee can, or use a washer as another poster mentioned). In your instance, when you finally do consume the Predator chalk, you now have to throw that magnet away with the chalk remnant, or find a way to remove and scrape/clean up the magnet.

I had this old telephone belt clip, these two Neodymium Magnets sitting on my desk not being used and glued one of them onto a piece of Predator chalk this morning. Maybe the small one is not strong enough because the chalk can separate just by brushing it lightly. Anyway, it's a million dollar idea. :wink:
Thanks,
joey

[...]

Just FYI, I don't think that magnet you show in the picture is a rare-earth magnet. That looks like a ceramic magnet. Sometimes these are mistakenly marketed as "rare earth" magnets, but in fact, they are much weaker. As you can glean from the helpful description below, some of the "cons" of ceramic magnets are that they are a low-energy product, and low mechanical strength:

http://rare-earth-magnets.com/t-types-of-magnets.aspx

You'll know when you have a REAL rare-earth magnet, because when you bring one near a dense piece of steel, you need to keep your fingers out from between that magnet and the steel because you risk serious injury (we're talking pinching to the point of amputating sections of skin).

Rare-earth magnets also resemble a metal more than the ceramic magnets (the latter of which are usually painted). Typically, you'll see a rare-earth magnet with a clear coating over it, like an epoxy, to keep it from oxidizing.

In your case, since you have two of these ceramic magnets at your disposal, try this:

1. Orient the other magnet so it attracts to the magnet you just glued to your Predator chalk.

2. Now glue that second magnet's opposite side to the cell phone clip. (Obviously, we're doing this so you don't make the mistake of having the chalk repelled from the cell phone clip because you have two north or two south poles mated together. )

The combination of two ceramic magnets should be strong enough so that the chalk is held more firmly, even in the case of being brushed.

You wouldn't need to do that with real rare-earth magnets, as one magnet will attach very strongly to a bit of steel glued to the bottom of the chalk, to the point where you actually have to use a tilting motion to remove the chalk from the magnet.

Hope that helps!
-Sean

 

[Klopek]

0000000000

 

[JoeyA]

Not really, you have it backwards -- you have the magnet on the chalk, and the steel on the clip. Glue the magnet to the clip instead, and glue a bit of steel onto the back of the chalk (e.g. from the bottom of a soup or coffee can, or use a washer as another poster mentioned). In your instance, when you finally do consume the Predator chalk, you now have to throw that magnet away with the chalk remnant, or find a way to remove and scrape/clean up the magnet.



Just FYI, I don't think that magnet you show in the picture is a rare-earth magnet. That looks like a ceramic magnet. Sometimes these are mistakenly marketed as "rare earth" magnets, but in fact, they are much weaker. As you can glean from the helpful description below, some of the "cons" of ceramic magnets are that they are a low-energy product, and low mechanical strength:

http://rare-earth-magnets.com/t-types-of-magnets.aspx

You'll know when you have a REAL rare-earth magnet, because when you bring one near a dense piece of steel, you need to keep your fingers out from between that magnet and the steel because you risk serious injury (we're talking pinching to the point of amputating sections of skin).

Rare-earth magnets also resemble a metal more than the ceramic magnets (the latter of which are usually painted). Typically, you'll see a rare-earth magnet with a clear coating over it, like an epoxy, to keep it from oxidizing.

In your case, since you have two of these ceramic magnets at your disposal, try this:

1. Orient the other magnet so it attracts to the magnet you just glued to your Predator chalk.

2. Now glue that second magnet's opposite side to the cell phone clip. (Obviously, we're doing this so you don't make the mistake of having the chalk repelled from the cell phone clip because you have two north or two south poles mated together. )

The combination of two ceramic magnets should be strong enough so that the chalk is held more firmly, even in the case of being brushed.

You wouldn't need to do that with real rare-earth magnets, as one magnet will attach very strongly to a bit of steel glued to the bottom of the chalk, to the point where you actually have to use a tilting motion to remove the chalk from the magnet.

Hope that helps!
-Sean

Once again, you illuminate the particulars better than anyone I have ever read, including one who no longer posts here.

It does help Sean.

One thing I learned is that the white Ceramic magnet holds a piece of metal more firmly than it does the other magnet. Don't know why, just does.

It hold pretty good but I am interested in a better grip. While I may order one of the rare earth magnets, I may order the one you use. I enjoy making my own but as you can see, I'm struggling. :grin:

Thanks for your help.

JoeyA

 

[Atlatlien]

I was wondering how tight your chalk holder holds the chalk? Does it EVER fall off of the magnet?

If I have to, I will just order a soft leather pouch from England. That worked good for me. Still willing to try other ideas. Just don't want the chalk to fall off the magnetic holder.

JoeyA

Mine never falls off. Holds it on there very securely, but the magnet is not too strong that it is difficult to remove it or anything like that. I haven't tried any jumping jacks with it on but I would think it would hold on during those as well. :thumbup:

 

[JoeyA]

Ordered some rare earth magnets in various sizes. Lots of warnings with these magnets. I don't think a small one will crush my fingers but I was surprised at the amount of warnings.
JoeyA