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Poll: Blackboard chalk
blackboard chalk 7 / 26%
magbesium carbonate 20 / 74%
27 total votes
 

QldDylan


Nov 3, 2009, 4:16 AM
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Blackboard chalk
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would normal chalk crushed up work as climbing chalk (magnesium carbonate)Crazy


(This post was edited by QldDylan on Nov 5, 2009, 12:54 AM)


Partner angry


Nov 3, 2009, 4:20 AM
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Re: [QldDylan] Blackboard chalk [In reply to]
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QldDylan wrote:
would normal chalk crushed up work as climbing chalk (magnesium carbonate)Crazy
-----------------------------------------------------
The man who smiles when things go wrong has thought of someone to blame it on.


johnwesely


Nov 3, 2009, 4:57 AM
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Re: [QldDylan] Blackboard chalk [In reply to]
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Of course it would. I use it and I climb harder than any of my friends.


doogle


Nov 3, 2009, 5:06 AM
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Re: [QldDylan] Blackboard chalk [In reply to]
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QldDylan wrote:
would normal chalk crushed up work as climbing chalk (magnesium carbonate)Crazy
-----------------------------------------------------
The man who smiles when things go wrong has thought of someone to blame it on.

By the same logic, next time you want to get drunk, subtitute ethanol for methanol.


airscape


Nov 3, 2009, 5:35 AM
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Re: [QldDylan] Blackboard chalk [In reply to]
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QldDylan wrote:
would normal chalk crushed up work as climbing chalk (magnesium carbonate)Crazy
-----------------------------------------------------
The man who smiles when things go wrong has thought of someone to blame it on.

I find the pink chalk to be far superior on slabs.
Sometimes I'll mix the green and blue to produce blueen, this makes the ultimate overhang chalk. I will however not share the ratios or the "3de level super send color" these are all trade secrets and belong to the l33t 5.15 club.


dynosore


Nov 3, 2009, 5:56 AM
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Re: [doogle] Blackboard chalk [In reply to]
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doogle wrote:
QldDylan wrote:
would normal chalk crushed up work as climbing chalk (magnesium carbonate)Crazy
-----------------------------------------------------
The man who smiles when things go wrong has thought of someone to blame it on.

By the same logic, next time you want to get drunk, subtitute ethanol for methanol.

So you normally drink methanol, eh?


photoguy190


Nov 3, 2009, 7:12 AM
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Re: [airscape] Blackboard chalk [In reply to]
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I know this is only a troll but lets think, how many boxes of chalk would you have to crush to fill your chalk bag? I don't see a price advantage at all, so what would be the reasoning to ever do this?


qtm


Nov 3, 2009, 7:15 AM
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Re: [photoguy190] Blackboard chalk [In reply to]
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The OP is a teacher and has access to the supply closet, or a student who can snag chalk from the classrooms.


camhead


Nov 3, 2009, 7:19 AM
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Re: [qtm] Blackboard chalk [In reply to]
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I like using classroom chalk, since it's WAY better for making tick marks on holds that I need.


hafilax


Nov 3, 2009, 7:25 AM
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Re: [QldDylan] Blackboard chalk [In reply to]
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Chalkboard chalk is made from calcium carbonate, like Tums, not magnesium carbonate. It might be better for calming an upset stomach than drying your hands.


shockabuku


Nov 3, 2009, 7:44 AM
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Re: [QldDylan] Blackboard chalk [In reply to]
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Yesterday I was working a sloper problem. I couldn't get it until I washed most of the chalk off of my hands. Try a Sharpie.


curt


Nov 3, 2009, 7:51 AM
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Re: [camhead] Blackboard chalk [In reply to]
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camhead wrote:
I like using classroom chalk, since it's WAY better for making tick marks on holds that I need.

Plus, you can make the left and right tick marks different colors.

Curt


kachoong


Nov 3, 2009, 8:45 AM
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Registered: Jan 22, 2004
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Re: [QldDylan] Blackboard chalk [In reply to]
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I voted magbesium... sounds catchy!


qwert


Nov 3, 2009, 9:46 AM
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Registered: Mar 24, 2004
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Re: [QldDylan] Blackboard chalk [In reply to]
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for fucks sake, if you absolutely most troll, then do it with something that hasnt been done, and not the same idiocy we had a bit over 2 months ago
And before you posted this crap, a search on this here site for "blackboard chalk" actually pointed to another thread with the same stupid question even earlier.
And just searching for "chalk" yields "Your search for chalk returned 16284 results".
So pick a better topic next time please.

If in fact you are just a stupid moron, then let me offer you some good advice:
Roughly the same questionwas discussed a bit over 2 months ago
And before you posted this crap, a search on this here site for "blackboard chalk" actually pointed to another thread with the same stupid question even earlier.
And just searching for "chalk" yields "Your search for chalk returned 16284 results".
The answer must be somewhere out there!

And to help you even further here is a quote from a nice guy that actually was drunk enough to make give a sincere reply in such a stupid thread:
qwert wrote:
canterbury wrote:
this thread made my day
mine too.

How didnt i notice it before?

It might be too late, but i indeed have a bit (really, only a bit, not much at all) of sympathy for the OP.

the use of the word chalk in climbing is totally misleading!

Geologically speaking chalk is a soft, sedimentary rock, made out of little "pellets" of Calcium Carbonate ( CaCO_3). So it is "simply" a limestone.

For example the cliffs of dover are made of this stuff. It is very soft (which makes for very "interesting" climbing i have heard) so it got used as writing chalk, since when dragged across a hard surface (such as a blackboard) it abraded and left a white line.

If you heat that stuff (or any other, harder limestone) it releases CO_2 and becomes CaO. CaO, or lime, has many uses, however putting it on your hands and getting it wet is none of them! (hint: OMG it burns Shocked)

Then we have street chalk. Maybe sometimes it is chalk (as mentioned, historically it has been), but mostly it is not. what gets used here is calcium sulfate (Gypsum, CaSO_4*2H_2O) another sedimentary rock. Its similar in softness and color to chalk, but it is not chalk.
If you heat gypsum, it will loose H_2O, and thus either become Anhidryte (CaSO_4) or (dont know the english term) "dry Gypsum" CaSO_4*0.5H_2O. this is the stuff you can buy as plaster. If you ad water it first becomes a soft kind of slime (depending on the amount of water) of gypsum (the dry gypsum takes the water and becomes gypsum again) and when excess water is evaporated you have gypsum again. I guess it is cheaper to produce "chalk" sticks that way than out of real chalk.
Also: Gypsum + Water = Slimy -> not you desired chalk

And then there is climbing, or gymnastics chalk, which can be a variety of stuff (apart from real chalk, but it seems like that has also been used). . Mostly it is MgCO_3, magnesium carbonate, but there also all kinds of various Mg and Ca oxides, carbonates and hydrates flying around, as well as drying agents. However none contain sulfur as far as i can see.
i have one container that says "4MgCO_3 . ?Mg(OH)_2 . ??". the label has abrade, but i would guess the first ? is a number and the last is H_2O.
Metolius speaks about a safe drying agent added to highes quality magnesium carbonete, wheras Balck diamond says only "pure chalk" (which is bullshit, mineralogically speaking) but as a MgCO_3 atom (which is not possible) printed on the bag.

So to sum it up:
Buy climbing chalk!

qwert

If you need it easier, without all the fancy science stuff your monkey brain probably doesnt understand, let me quote this gentleman:
codhands wrote:
Just buy some damn climbing chalk off the internet, It's cheap as hell, and you don't have to worry about the lead contamination from the Chinese made sidewalk chalk. You're hogging up the bandwidth!

Or problably even easier, without such strange words as "lead contamination":

No, it wont work.

qwert


(This post was edited by qwert on Nov 3, 2009, 9:48 AM)


LostinMaine


Nov 3, 2009, 9:53 AM
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Re: [angry] Blackboard chalk [In reply to]
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angry wrote:
QldDylan wrote:
would normal chalk crushed up work as climbing chalk (magnesium carbonate)Crazy
-----------------------------------------------------
The man who smiles when things go wrong has thought of someone to blame it on.

Did the OP actually write out his "signature" in that post?

Nice.


Partner epoch
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Nov 3, 2009, 10:39 AM
Post #16 of 28 (8907 views)
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Registered: Apr 27, 2005
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Re: [qwert] Blackboard chalk [In reply to]
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qwert wrote:
for fucks sake, if you absolutely most troll, then do it with something that hasnt been done, and not the same idiocy we had a bit over 2 months ago
And before you posted this crap, a search on this here site for "blackboard chalk" actually pointed to another thread with the same stupid question even earlier.
And just searching for "chalk" yields "Your search for chalk returned 16284 results".
So pick a better topic next time please.

If in fact you are just a stupid moron, then let me offer you some good advice:
Roughly the same questionwas discussed a bit over 2 months ago
And before you posted this crap, a search on this here site for "blackboard chalk" actually pointed to another thread with the same stupid question even earlier.
And just searching for "chalk" yields "Your search for chalk returned 16284 results".
The answer must be somewhere out there!

And to help you even further here is a quote from a nice guy that actually was drunk enough to make give a sincere reply in such a stupid thread:
qwert wrote:
canterbury wrote:
this thread made my day
mine too.

How didnt i notice it before?

It might be too late, but i indeed have a bit (really, only a bit, not much at all) of sympathy for the OP.

the use of the word chalk in climbing is totally misleading!

Geologically speaking chalk is a soft, sedimentary rock, made out of little "pellets" of Calcium Carbonate ( CaCO_3). So it is "simply" a limestone.
[image]http://upload.wikimedia.org/wikipedia/commons/thumb/3/3b/White_Cliffs%2C_Dover.jpg/450px-White_Cliffs%2C_Dover.jpg[/image]
For example the cliffs of dover are made of this stuff. It is very soft (which makes for very "interesting" climbing i have heard) so it got used as writing chalk, since when dragged across a hard surface (such as a blackboard) it abraded and left a white line.

If you heat that stuff (or any other, harder limestone) it releases CO_2 and becomes CaO. CaO, or lime, has many uses, however putting it on your hands and getting it wet is none of them! (hint: OMG it burns Shocked)

Then we have street chalk. Maybe sometimes it is chalk (as mentioned, historically it has been), but mostly it is not. what gets used here is calcium sulfate (Gypsum, CaSO_4*2H_2O) another sedimentary rock. Its similar in softness and color to chalk, but it is not chalk.
If you heat gypsum, it will loose H_2O, and thus either become Anhidryte (CaSO_4) or (dont know the english term) "dry Gypsum" CaSO_4*0.5H_2O. this is the stuff you can buy as plaster. If you ad water it first becomes a soft kind of slime (depending on the amount of water) of gypsum (the dry gypsum takes the water and becomes gypsum again) and when excess water is evaporated you have gypsum again. I guess it is cheaper to produce "chalk" sticks that way than out of real chalk.
Also: Gypsum + Water = Slimy -> not you desired chalk

And then there is climbing, or gymnastics chalk, which can be a variety of stuff (apart from real chalk, but it seems like that has also been used). . Mostly it is MgCO_3, magnesium carbonate, but there also all kinds of various Mg and Ca oxides, carbonates and hydrates flying around, as well as drying agents. However none contain sulfur as far as i can see.
i have one container that says "4MgCO_3 . ?Mg(OH)_2 . ??". the label has abrade, but i would guess the first ? is a number and the last is H_2O.
Metolius speaks about a safe drying agent added to highes quality magnesium carbonete, wheras Balck diamond says only "pure chalk" (which is bullshit, mineralogically speaking) but as a MgCO_3 atom (which is not possible) printed on the bag.

So to sum it up:
Buy climbing chalk!

qwert

If you need it easier, without all the fancy science stuff your monkey brain probably doesnt understand, let me quote this gentleman:
codhands wrote:
Just buy some damn climbing chalk off the internet, It's cheap as hell, and you don't have to worry about the lead contamination from the Chinese made sidewalk chalk. You're hogging up the bandwidth!

Or problably even easier, without such strange words as "lead contamination":

No, it wont work.

qwert

I'm not reading this.


Bats


Nov 3, 2009, 11:12 AM
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Re: [QldDylan] Blackboard chalk [In reply to]
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A girl I know use the blackboard chalk. She buys at the dollar store for $0.50. She climbs unbelievable, but she also a former gymnast.


musicbum


Nov 3, 2009, 11:25 AM
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Re: [QldDylan] Blackboard chalk [In reply to]
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No it doesn't. Magnesium carbonate works exceptionally well because it is an anhydrous salt. This fancy name just means that it absorbs water. So, when your climbing and your hands get sweaty, magnesium carbonate(climbing chalk) soaks up that sweat, whereas blackboard chalk doesn't do anything.
Smile


csproul


Nov 3, 2009, 1:44 PM
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Re: [musicbum] Blackboard chalk [In reply to]
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musicbum wrote:
No it doesn't. Magnesium carbonate works exceptionally well because it is an anhydrous salt. This fancy name just means that it absorbs water. So, when your climbing and your hands get sweaty, magnesium carbonate(climbing chalk) soaks up that sweat, whereas blackboard chalk doesn't do anything.
Smile
u shoor sownd smart fur sumun whu duzent no the difrens b-twene "your" and "you're"Wink


kovacs69


Nov 3, 2009, 2:45 PM
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Re: [QldDylan] Blackboard chalk [In reply to]
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Why would you even ask that? Are you having a difficult time finding climbing chalk? I can't see the sense of buying chalkboard chalk and then grinding it up. Is it cheaper?


sbaclimber


Nov 3, 2009, 3:11 PM
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Registered: Jan 21, 2004
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Re: [qwert] Blackboard chalk [In reply to]
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qwert wrote:
for fucks sake, if you absolutely most troll, then do it with something that hasnt been done, and not the same idiocy we had a bit over 2 months ago
And before you posted this crap, a search on this here site for "blackboard chalk" actually pointed to another thread with the same stupid question even earlier.
And just searching for "chalk" yields "Your search for chalk returned 16284 results".
So pick a better topic next time please.

If in fact you are just a stupid moron, then let me offer you some good advice:
Roughly the same questionwas discussed a bit over 2 months ago
And before you posted this crap, a search on this here site for "blackboard chalk" actually pointed to another thread with the same stupid question even earlier.
And just searching for "chalk" yields "Your search for chalk returned 16284 results".
The answer must be somewhere out there!

And to help you even further here is a quote from a nice guy that actually was drunk enough to make give a sincere reply in such a stupid thread:
qwert wrote:
canterbury wrote:
this thread made my day
mine too.

How didnt i notice it before?

qwert

Damn, I think that is first time I've seen your seriously rip into someone! (no, I don't read most of your posts...)

Sweet rant! (coming from the guy listening to Die Toten Hosen as I type...)

Edit, for cheesetitting my qoutes, damned german keyboard....Tongue)


(This post was edited by sbaclimber on Nov 3, 2009, 3:14 PM)


CrazyPetie


Nov 3, 2009, 3:20 PM
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Re: [LostinMaine] Blackboard chalk [In reply to]
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LostinMaine wrote:
angry wrote:
QldDylan wrote:
would normal chalk crushed up work as climbing chalk (magnesium carbonate)Crazy
-----------------------------------------------------
The man who smiles when things go wrong has thought of someone to blame it on.

Did the OP actually write out his "signature" in that post?

Nice.

Haha i think thats the best part about it.


QldDylan


Nov 3, 2009, 5:05 PM
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Re: [sbaclimber] Blackboard chalk [In reply to]
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yea its hard to get around here


acorneau


Nov 3, 2009, 7:10 PM
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Registered: Feb 6, 2008
Posts: 2889

Re: [QldDylan] Blackboard chalk [In reply to]
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QldDylan wrote:
yea its hard to get around here

On sale at REI for 43 cents a block, and they'll ship it to you...
http://www.rei.com/product/474181



kachoong


Nov 3, 2009, 7:54 PM
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Registered: Jan 22, 2004
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Re: [acorneau] Blackboard chalk [In reply to]
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Yeah, I just got ten blocks of it... plus some other clearance stuff.

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