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The Chalk Market: Where Mathematicians Go to Get the Good Stuf

211 pointsby mxcrossbalmost 6 years ago

17 comments

toomanybeersiesalmost 6 years ago
The Japanese seem to make really good writing instruments in general.<p>My daily driver for writing is a Mitsubishi uni-ball eye. Only costs a few bucks and it&#x27;s miles better than a 10 cent Bic.<p>I&#x27;m not some kind of pen snob who knows all about different pens, but I know a good pen when I use one. I&#x27;ve found that it makes my (usually unintelligible) handwriting a lot better too.<p>I guess it&#x27;s maybe a cultural thing, I&#x27;ve heard that the Japanese still place a lot of emphasis on handwriting letters and notes. Meanwhile there&#x27;s people in my office who haven&#x27;t touched a pen in weeks.
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johnoharaalmost 6 years ago
A well-made slate board completes the marriage.<p>It is pure joy to come to class with a fully prepared math lesson on yellow legal paper, take attendance, clear the board, and start, filling three, maybe four boards with precise alphanumeric characters, graphs or diagrams, and a confident cadence that allows for good questions, good notes, and a positive learning environment.<p>When good chalk hits good slate there is an immediate sense of responsibility with respect to what has been enabled.
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aapelialmost 6 years ago
I was first introduced to Hagoromo about four years ago when the word had just come out that they were closing shop. A colleague of mine was in love with it, and ordered several boxes. I managed to get two sticks of the stuff and used it sparingly for quite a long time. It really is way better than the majority of chalks. It&#x27;s coated in a thin film so your hands don&#x27;t get dirty and it&#x27;s extremely fine making it smooth to write with.<p>The article is a little comical about the effects of using the chalk, but due to its scarcity, I&#x27;ve certainly heard that some use it only for the most important theorems.
stevewillowsalmost 6 years ago
I love how every community has their &#x27;thing&#x27; that is sought after. Looking up chalk leads down a very narrow rabbit hole.<p>Some say that Hagoromo sold two of their compression molds to Sejong Corp (who also took the name), while the other went to Uma-Jirushi.<p>If I had a use for chalk, it&#x27;d be fun to try to create the perfect stick. Compression molds aren&#x27;t hard to find or even make, then its down the mix. I assume that Hagoromo was using more than water and a super fine plaster (e.g. Plaster of Paris) with white Tempura paint..<p>Has anybody tried making chalk before? I&#x27;ve made chalkboard paint for signage (just unsanded grout and paint), but I never thought to take it a step further.
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equaluniquealmost 6 years ago
For anyone here who likes &quot;mechanical keyboards&quot; it may interest you to know that for the next 7 days some Hagoromo-chalk color-matched kits are available in a &quot;group buy&quot; on Massdrop[0]. The kit is for the alpha (i.e., the &quot;letter and number&quot;) keys on your US-ANSI layout keyboard. There is also another kit, which in addition to having the standard letters and numbers, adds APL sublegends. There are a couple smaller kits that add the color to the F-row, and more interestingly, a &quot;Vim Kit&quot; which has left, down, up, and right arrows as sublegends on the H, J, K, and L keys - all in a color of ABS plastic matches to Hagoromo chalk.<p>[0] <a href="https:&#x2F;&#x2F;drop.com&#x2F;buy&#x2F;drop-oblotzky-gmk-oblivion-v2-custom-keycap-set?utm_source=linkshare&amp;referer=DNQGJA" rel="nofollow">https:&#x2F;&#x2F;drop.com&#x2F;buy&#x2F;drop-oblotzky-gmk-oblivion-v2-custom-ke...</a>
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9nGQluzmnq3Malmost 6 years ago
This is the new manufacturer of Hagoromo:<p><a href="http:&#x2F;&#x2F;www.sejongmall.co.kr" rel="nofollow">http:&#x2F;&#x2F;www.sejongmall.co.kr</a> (Korean only)<p><a href="http:&#x2F;&#x2F;www.kompass.kr&#x2F;img&#x2F;catalogue&#x2F;20180719094839_1.pdf" rel="nofollow">http:&#x2F;&#x2F;www.kompass.kr&#x2F;img&#x2F;catalogue&#x2F;20180719094839_1.pdf</a> (English brochure)
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ZoomZoomZoomalmost 6 years ago
I have a slight physiological twitch-like reaction to the feeling of chalk on my fingertips. It bothered me so much during my learning years that I did my best to avoid coming to a board at all. If anyone knows a correct term for this phenomenon, I&#x27;d be glad to read more about it.
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pmiller2almost 6 years ago
What I’d like to know is why, of all academics, only mathematicians care about chalk. Computer scientists? Nope. Statisticians? Nope. Physicists? Engineers? Nope, and nope. Only mathematicians.<p>And, don’t forget about boards. Real slate, please. Black. Large. Yes.
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peterburkimsheralmost 6 years ago
The chalk sounds amazing, for those with a blackboard.<p>If anybody uses a whiteboard, here&#x27;s a scientifically-methodical article reviewing the best whiteboard pens of each colour.<p><a href="https:&#x2F;&#x2F;medium.com&#x2F;graphicfacilitation&#x2F;all-you-need-to-know-about-whiteboard-markers-2a25d1249911" rel="nofollow">https:&#x2F;&#x2F;medium.com&#x2F;graphicfacilitation&#x2F;all-you-need-to-know-...</a>
Reedxalmost 6 years ago
Recently saw a good video about this: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=PhNUjg9X4g8" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=PhNUjg9X4g8</a><p>Pretty amusing they were stockpiling it and some were chalk dealers on the side.
dangalmost 6 years ago
Related: <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=19822164" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=19822164</a>
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kn0wherealmost 6 years ago
Maybe I’m just young, but I hate chalkboards. In college they were always way less legible than a whiteboard with a fresh marker—too little contrast.
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AnthonyWnCalmost 6 years ago
I think chalk sucks as they are dirty, messy, dusty and probably not good for your health. I hope for the day they all disappeared and are replaced by digital whiteboard where you don&#x27;t need to erase anything and can be collaborative with remote location in real time.
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_hardwaregeekalmost 6 years ago
It&#x27;s amazing stuff. So smooth, so clean. I&#x27;ve resorted to keeping some in my backpack at all times. And anecdotally, I see more and more professors using it. Maybe good marketing at work?<p>Sidenote, I love the name MSRI, cause you can pronounce it &quot;misery&quot;
sapphire_tombalmost 6 years ago
Interesting. I thought the stuff people generally wrote on blackboards with was actually gypsum, and not chalk at all. Although everyone calls it chalk.
beezlealmost 6 years ago
So what is the best blackboard then? Seems pointless to use really good chalk on an inferior board.
skcalmost 6 years ago
Which one tastes best?<p>Only half joking. I used to nibble on chalk as a kid, was oddly satisfying.