Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts please.

Ta
Jon N

On Friday, 10 April 2015 10:50:02 UTC+1, jkn wrote:
Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts please.

Ta
Jon N

epoxy softens when hot


NT

jkn wrote:
Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts please.

Ta
Jon N


Superglue will normally capillary flow into the gap with a bit of very
careful flexing.

wrote:
On Friday, 10 April 2015 10:50:02 UTC+1, jkn wrote:
Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts please.

Ta
Jon N

epoxy softens when hot


NT
Don't use bostic like I did. Ended up scalding my ********.

Bill

On 10/04/2015 12:50, Capitol wrote:
jkn wrote:
Hi All
A favourite ceramic mug has, I have just noticed, got a
crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I
can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or
maybe even
breaking off the handle so I can do a 'proper' mend with epoxy?
Thoughts please.


Superglue will normally capillary flow into the gap with a bit of
very careful flexing.

It is however somewhat water soluble which isn't ideal. Thin slow epoxy
in used the narrow time when it is mobile might be a decent choice. You
may have to wait for the handle to fail before it is repairable.

--
Regards,
Martin Brown

On Friday, 10 April 2015 12:51:55 UTC+1, Bill Wright wrote:
wrote:
On Friday, 10 April 2015 10:50:02 UTC+1, jkn wrote:
Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts please.

Ta
Jon N

epoxy softens when hot


NT
Don't use bostic like I did. Ended up scalding my ********.

That explains a lot...

J^n

On Fri, 10 Apr 2015 12:51:44 +0100, Bill Wright wrote:

wrote:
On Friday, 10 April 2015 10:50:02 UTC+1, jkn wrote:
Hi All
A favourite ceramic mug has, I have just noticed, got a
crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I
can't easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or
maybe even breaking off the handle so I can do a 'proper' mend with
epoxy? Thoughts please.

Ta Jon N

epoxy softens when hot


NT
Don't use bostic like I did. Ended up scalding my ********.

And stopped the organ from operating?


--
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £30a message.
Use the BIG mirror service in the UK: http://www.mirrorservice.org
*lightning surge protection* - a w_tom conductor

On Friday, April 10, 2015 at 10:50:02 AM UTC+1, jkn wrote:
Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts please.

Ta
Jon N

This is interesting and some bits will be relevant:
http://www.lakesidepottery.com/Pages...r-ceramic.html

Simon.

In article , jkn
writes
Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts please.

Forget it, there is nothing that will restore it in any way close to the
strength and durability of the original material and that is what is
required at that most highly stressed part of the mug.

Consider burial or perhaps ritual crushing instead for closure and move
on.

--
fred
it's a ba-na-na . . . .

On Friday, April 10, 2015 at 4:20:37 PM UTC+1, sm_jamieson wrote:
On Friday, April 10, 2015 at 10:50:02 AM UTC+1, jkn wrote:
Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts please.

Ta
Jon N

This is interesting and some bits will be relevant:
http://www.lakesidepottery.com/Pages...r-ceramic.html

Simon.

Thank you, that's very interesting.

I like the idea of using a razor blade to widen the crack - without that I
doubt anything would get into the crack in its current state.

I am a keen proponent of heating epoxy to make it thinner/set quicker; not sure
if it will be thin _enough_ in this case. Perhaps I shall try thia approach
with a trial run ...

Cheers
Jon N

On Fri, 10 Apr 2015 02:50:00 -0700 (PDT), jkn
wrote:

Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts please.

I've been there a few times.

My view is always: will it be containing scalding hot liquids above my
body at some point? If yes (cup when drinking, casserole dish while
carrying from oven), I just chuck it; otherwise I try to mend it.

A cup of tea is surprisingly hot, and not something you want in your
lap. So maybe time to retire that favourite mug to windowsill duty
only.

On 10/04/2015 19:16, Caecilius wrote:
On Fri, 10 Apr 2015 02:50:00 -0700 (PDT),
wrote:

Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts please.

I've been there a few times.

My view is always: will it be containing scalding hot liquids above my
body at some point? If yes (cup when drinking, casserole dish while
carrying from oven), I just chuck it; otherwise I try to mend it.

A cup of tea is surprisingly hot, and not something you want in your
lap. So maybe time to retire that favourite mug to windowsill duty
only.
Could it be that the glaze has a hairline crack but still sound
underneath? Is a risk you take in scalding yourself.

On 10/04/15 19:16, Caecilius wrote:
On Fri, 10 Apr 2015 02:50:00 -0700 (PDT), jkn
wrote:

Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts please.

I've been there a few times.

My view is always: will it be containing scalding hot liquids above my
body at some point? If yes (cup when drinking, casserole dish while
carrying from oven), I just chuck it; otherwise I try to mend it.

A cup of tea is surprisingly hot, and not something you want in your
lap. So maybe time to retire that favourite mug to windowsill duty
only.

I crack em off and repair with epoxy: The difference is that I bake the
glue in an oven at 100C or so while it sets. araldite set like that does
NOT soften when hot. Or at least it is glass hard when its cold so a bit
of heat merely makes it very tough.


--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

On Fri, 10 Apr 2015 19:16:16 +0100, Caecilius
wrote:

On Fri, 10 Apr 2015 02:50:00 -0700 (PDT), jkn
wrote:

Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it -
I've been there a few times.

My view is always: will it be containing scalding hot liquids above my
body at some point? If yes (cup when drinking, casserole dish while
carrying from oven), I just chuck it; otherwise I try to mend it.


If it really must remain in use due for sentimental reasons then do
what is done with some old buildings and ancient trees and put some
external support around it.
Many coffee cafetiere are not much more than a laboratory glass beaker
in a metal frame with a handle, charity shops often seem to have some.
Find one where the diameter of the glass is close to your mug and use
the frame to support it, repurpose or throw the glass beaker away.

G.Harman

On 10/04/2015 10:50, jkn wrote:
Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts please.

Sadly, I would say simply bin it. Its difficult to do any repair that is
trustworthy IMHO, and the penalty for it failing could be high.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

On Friday, 10 April 2015 21:36:25 UTC+1, The Natural Philosopher wrote:
On 10/04/15 19:16, Caecilius wrote:
On Fri, 10 Apr 2015 02:50:00 -0700 (PDT), jkn
wrote:

Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts please.

I've been there a few times.

My view is always: will it be containing scalding hot liquids above my
body at some point? If yes (cup when drinking, casserole dish while
carrying from oven), I just chuck it; otherwise I try to mend it.

A cup of tea is surprisingly hot, and not something you want in your
lap. So maybe time to retire that favourite mug to windowsill duty
only.

I crack em off and repair with epoxy: The difference is that I bake the
glue in an oven at 100C or so while it sets. araldite set like that does
NOT soften when hot. Or at least it is glass hard when its cold so a bit
of heat merely makes it very tough.



How do you hold the piece in place while you do this - just gravity?

J^n

On 11/04/15 08:41, jkn wrote:
On Friday, 10 April 2015 21:36:25 UTC+1, The Natural Philosopher wrote:
On 10/04/15 19:16, Caecilius wrote:
On Fri, 10 Apr 2015 02:50:00 -0700 (PDT), jkn
wrote:

Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts please.

I've been there a few times.

My view is always: will it be containing scalding hot liquids above my
body at some point? If yes (cup when drinking, casserole dish while
carrying from oven), I just chuck it; otherwise I try to mend it.

A cup of tea is surprisingly hot, and not something you want in your
lap. So maybe time to retire that favourite mug to windowsill duty
only.

I crack em off and repair with epoxy: The difference is that I bake the
glue in an oven at 100C or so while it sets. araldite set like that does
NOT soften when hot. Or at least it is glass hard when its cold so a bit
of heat merely makes it very tough.



How do you hold the piece in place while you do this - just gravity?

If possible yes. or use masking tape

J^n



--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

In message , John
Rumm writes

Sadly, I would say simply bin it. Its difficult to do any repair that
is trustworthy IMHO, and the penalty for it failing could be high.

+1

I have repaired mug handles in the past, but then not been brave enough
to actually use them. I just have this vision of the repair failing
when the mug is about an inch below my mouth, and hot tea going
everywhere, including all over me.
--
Graeme

You might want to wait tillit comes off, but sometimes its shrinkage of the
glaze that makes it look like a crack. One also needs to know if it was made
traditionally, ie was the handle glued on using slip or something at fireing
time. the internal stresses eventually do make these things fail at the
weakest point.
Maybe you need to talk to some restorers of ancient articfacts, as I never
had much luck with glues. They tend not to stand up to the heating and
cooling and cleaning very well. Of course most artifacts are not in daily
use, so it might be that you need to turn it into an exhibit, and get a new
daily use mug.
Some small potteries might make you one I suppose.
Brian

--
From the Sofa of Brian Gaff Reply address is active
"jkn" wrote in message
...
Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break
where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I
can't
easily apply epoxy or similar to the whole broken surface.

Worth trying to eg. rely on the capillary action of superglue? or maybe
even
breaking off the handle so I can do a 'proper' mend with epoxy? Thoughts
please.

Ta
Jon N

jkn wrote:
Hi All
A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

Angle grinder.

No, really.

Remove handle (or wait until it comes away of its own accord) and then
grind down the handle stumps. If holding it when hot's a problem then
demote it to garden duty where it'll cool quicker by either a) being
left stewing longer or b) sitting out in the cold British summer.

--
Scott

Where are we going and why am I in this handbasket?

"jkn" wrote in message
...
A favourite ceramic mug has, I have just noticed, got a crack/break where
the
lower end of the handle joins the base.



Favourite ceramic mug my arse.

Just buy a new one that is exactly the same but not broken.

--
Adam

On Sunday, 12 April 2015 18:10:22 UTC+1, ARW wrote:
"jkn" wrote in message
...
A favourite ceramic mug has, I have just noticed, got a crack/break where
the
lower end of the handle joins the base.



Favourite ceramic mug my arse.

Just buy a new one that is exactly the same but not broken.

--
Adam

Thanks Adam - sadly it's not possible to get one 'exactly the same' without
shelling out a fortune; it's a collectible type thing.

I wouldn't bother with most but this one is of importance to the grandchild ...

J^n

On Fri, 10 Apr 2015 02:50:00 -0700 (PDT), jkn wrote:

A favourite ceramic mug has, I have just noticed, got a crack/break where the
lower end of the handle joins the base.

I'd like to repair it - but at the moment there is a crack only, ie. I can't
easily apply epoxy or similar to the whole broken surface.

I have used some Loctite UV-hardening glass glue to repair ceramic.

Remeins liquid idefinetely, until exposed to UV. Ceramic takes longer for it to
harden fully, but it does, eventually. Last through coffe and dishwascher, for
one year, now.

Thomas Prufer