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Repairing Hairline Cracks in Ceramic Glaze

01/25/2010 6:20 AM

This is my fave work coffee cup:

Unfortunately, the glaze is crazed inside with a network of hair-line cracks:

When left with coffee standing for a while, the coffee finds it's way through the cracks, seeps through the walls of the cup, and oozes out through more cracks on the underside (see below), resulting in a sticky mess all over my desk/current project specs/IEE regs etc.

The problem, then, is how to seal the cracks?

[I posed this question elsewhere on CR4, and got no sensible replies. I hope I do better here!]

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#93
In reply to #89
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Re: Repairing Hairline Cracks in Ceramic Glaze

02/05/2010 3:07 PM

Garthh, are you sure that it cannot happen? It could be an interesting statistical experience. Let us know, Gil.

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#97
In reply to #93

Re: Repairing Hairline Cracks in Ceramic Glaze

02/06/2010 5:41 PM

also in reply to 95

I'm not responsible to protect morons from themselves

I haven't heard or seen so much as one instance of anyone, who had done their own due diligence & been harmed by advice from CR4.

In order to undertake such research, one would at least need some evidence.

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#101
In reply to #97

Re: Repairing Hairline Cracks in Ceramic Glaze

03/01/2010 9:27 AM

Hi Garthh,

Why are you so angry to human opinion with your sentence below, which must be eliminated from CR$ and any other blog: "I'm not responsible to protect morons from themselves".

I can accept that you are against the opinion of anyone but tell people that they are "morons", please, educate yourself, and immediately. I don't think that you represent a "nation"?

You pass to the extreme of acceptable! Get a good book on education and work on your attitude and character. However, your world doesn't hurt no one but all we have is a precise opinion of you, Gil.

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#102
In reply to #101

Re: Repairing Hairline Cracks in Ceramic Glaze

03/03/2010 1:20 AM

I certainly don't understand your intended message what ever nation [or planet] you represent?

Please do educate the rest of us [mere mortals], your infinitly superiour wisdom on human nature & capabilities.

my best interpretation [of your view] is that we the members of CR4 are responsible to protect everyone on the internet from themselves

do you understand that this entire thread is a joke by John DG?

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#103
In reply to #102

Re: Repairing Hairline Cracks in Ceramic Glaze

03/03/2010 3:39 AM

" ...a joke by John DG?"

Largely, but not entirely. The mug has the cracks; if a cheap, simple method of sealing them came to light, I would gladly apply it - I do like the mug and it is annoying to have to either wash it thoroughly every time it's refilled or to put up with the brown sticky rings.

It was, however, meant in a light-hearted vein; I fully expected solutions ranging from practical to completely over-the-top.

I'm surprised at the reaction to my suggestion of using chlorate with sugar - I (obviously wrongly) assumed that this schoolboy stuff was common knowledge. Maybe I just had a good (or bad?) education.

D'you think thermite[1] with the silicon dioxide would work?

[1] Note that this is a joke. I have provided a link where applicable safety information may be found.

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#104
In reply to #102

Re: Repairing Hairline Cracks in Ceramic Glaze

03/03/2010 9:19 AM

Garthh,

You confirm that you missed your education!

I am not an educator and no one can make you a normal and acceptable "human" any more.

Now, someone else is responsible for your ways of treating people's opinion. You are a saint or innocent, and others are the ignorants or viles. CR4 accepted you and you shoot them in the back. It's loyalty at your level.

Joke or serious, be polite and educated, and let people to love or cherish what they have, Gil.

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#105
In reply to #104

Re: Repairing Hairline Cracks in Ceramic Glaze

03/03/2010 10:39 AM

Gil,

Your responses here have been out of order. You accused Garthh of being angry, when it obvious (at least to most of us) that his post that he was quite light-heartedly answering your censorous post. There's a big clue in his use of the smiley face icon.

He was telling anyone that they were morons, but rather saying that anyone who didn't independently check the facts was, ipso facto, a moron*. This was in the Ransome spirit of "Better drowned than duffers, if not duffers, won't drown". A little like Caveat Emptor, which is still enshrined in law (which as it came via the UK, I would think was also part of Canadian law).

By contrast, you made a personal attack on Garthh, thus showing yourself to be the thing you have just condemned. A suggestion: vv1-5.

*a sentiment with which I agree

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#107
In reply to #105

Re: Repairing Hairline Cracks in Ceramic Glaze

03/03/2010 10:53 AM

Thanks for your educational comments and I submit my-self to yours and Garthh's instruction to accept to be treated as "moron" like he treated others. Very good culture and education you have together. I don't want to read from "you two" nothing after the joky "cracks in ceramic glaze". You are both very friendly, Gil.

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#108
In reply to #107

Re: Repairing Hairline Cracks in Ceramic Glaze

03/03/2010 4:31 PM

There are many of us who agree with Garth and Rose's comments. I imagine we keep quiet because they seem to have a handle on the situation.

I must admit, whenever I see a new post in this thread I regret visiting and reading your posts.

Gil, you have been antagonistic and rude on many occasions.

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#109
In reply to #107

Re: Repairing Hairline Cracks in Ceramic Glaze

03/03/2010 8:45 PM

You are not just rude but obtuse, obscure

in short incomprehensible?

I never said you were or are a moron

I said [or words to the effect]

anyone who tries things off the internet without, doing research into the possible negative effects

"is a Moron"

As long as you keep throwing shyt at me, I will keep responding...

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#106
In reply to #104

Re: Repairing Hairline Cracks in Ceramic Glaze

03/03/2010 10:42 AM

We are all educators

my lesson is

use your brain, think for yourself, learn what you can, context counts

What is your point?

do you have one?

or do you just want to lob insults

Acting under cover of protector of us all.

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#112
In reply to #106

Re: Repairing Hairline Cracks in Ceramic Glaze

04/28/2012 7:35 PM

Garthh

I've been trying to remember your name for a couple of days. when I did I found I could not send a personal message...

Did you hear and/or see the meteor coming in last Sunday? I certainly did hear it, but did not see it. I just returned from visiting a local geologist friend who pretty much confirms that I actually found a piece of it in my front yard! If you haven't looked around yet, do so!

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#113
In reply to #112

Re: Repairing Hairline Cracks in Ceramic Glaze

04/28/2012 7:42 PM

Garthh ain't here (on CR4) any more. His last posts.

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#114
In reply to #113

Re: Repairing Hairline Cracks in Ceramic Glaze

04/28/2012 7:59 PM

Thanks! I was unaware...

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#115
In reply to #114

Re: Repairing Hairline Cracks in Ceramic Glaze

04/28/2012 8:17 PM

He was hit by a meteor.

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#99
In reply to #89
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Re: Repairing Hairline Cracks in Ceramic Glaze

02/07/2010 1:34 AM

Never underestimate the stupidity of a very small proportion of the population.

Hopefully the CR4 sample has a far smaller percentage of idiots than the normal population and anyway, if they try things they usually have enough knowledge to do so reasonably safely.

CR4 tends to educate as well as inform.

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#100
In reply to #89
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Re: Repairing Hairline Cracks in Ceramic Glaze

02/27/2010 6:39 PM

Thank you!

I will try this.

I had wondered about the reaction between sodium silicate and alumina, because this very similar to the polymerization of sodium silicate with alumino-silicates. I bet the alumina you use is best calcinated at several hundred degree Celcius first.

using aluminosilicates rather than alumina would require no more than 150C, so no torch needed (easily done in oven).

This is called geopolymerization.

so glad to hear about this!

-elliot

My Geopolymer project

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#92
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Re: Repairing Hairline Cracks in Ceramic Glaze

02/05/2010 3:03 PM

John, with human everything did, can, and will happen! You know how we are? Me too, I hope no one do what was suggested, Gil.

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#119
In reply to #92

Re: Repairing Hairline Cracks in Ceramic Glaze

04/29/2012 6:03 AM

I always heat my ammonium nitrate and diesel fuel in a cup lik

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