Jump to content


Member Since 30 Dec 2012
Offline Last Active Oct 02 2014 04:58 AM

#54567 Spoonrests or Top Ramen

Posted by Mart on 13 March 2014 - 11:05 AM

Spoon rest must be a American thing. Really interesting that people buy those.

Nobody here wants them even for free ( I made few to see do people like them)

They ask: "Why use "spoon rests" if we have saucers that work as well"

#51902 Tips Needed For Using A Press Mould

Posted by Mart on 07 February 2014 - 01:55 PM

If it was sticking to your mould too, you be in real trouble. :)

Before you waste too much time with this "clay", test fire a small piece of this stuff in a bowl. If it melts, it can not ruin your kiln shelves.

BTW, someone's free crap can cost you your kiln.

LOL, what if it's not terracotta at all but a red iron oxide rich glaze? If so, this will be one of those o_O moments. 

#50117 Firing Schedule, Cone 6 Glazes

Posted by Mart on 13 January 2014 - 04:42 PM

Here is a spread sheet, that calculates different firing profiles for kilns/controllers sold in US


#49849 Cannot See Witness Cones

Posted by Mart on 10 January 2014 - 03:36 AM

The kiln is reading low as the witness cones are coming out with only the first (lowest) cone bent. We are trying to fire at cone 6 and we are consistently getting a cone reading of 5 or maybe 5.5 when computer is set to cone six.

What is stopping you from setting your computer to go to cone 7? Or maybe even ~7.5 and see what happens?
I have used cones only few times (anagama and my gas kiln) and you are right, they are not easy to see. Get yourself a pair of gas welding goggles as recommended before. If I recall, cones needed little bit space so there is nothing immediately behind them. Make sure you can see them well from the peep hole before you fire up the kiln. Too close to the peep hole will not help you to see them better.

#46603 Poor Instruction And The Cost

Posted by Mart on 25 November 2013 - 03:16 PM

What stops you asking her to "dial down the crazy?" I bet you 2 get along a lot better after that.

#45379 Errors Uploading Images To Gallery

Posted by Mart on 09 November 2013 - 08:29 AM

Usability of this galley is so bad that I can not even find words to describe it.


Seriously annoying "features" :

1) Uploading images one by one - seriously? Are we still in 1999?

2) Sorting/grouping images - this is a joke! Allow dragging of images to any order gallery owner likes.

3) Gallery owner can not add comments without admin approval - LOL! Why? Spam?

4) If you click on the to view it (magnifying glass thingy), it opens up a new image but there is no way to move to next image. I have to start over.


Important features

5) resize (single or batch) - most people have no idea how to resize their huge images. This is a must feature and is really easy to implement (There are fee and open source libraries available for every platform out there Java, PHP, .vomit-Net etc)

6) multiple file upload - seriously :)


I have no idea why you guys have wasted time and money reinventing a wheel. Use open source image gallery software that can be integrated to your forum software. Oops, you guys are on IP board.. OK, never mind. Good luck.

#45346 Cones And Soaking Times Theory

Posted by Mart on 08 November 2013 - 04:53 PM

yawn... this is one of those "I told you so" (about cones and how outdated/limited this concept actually is)...
Lets use rings, forget the cones! LOL ;)

#45112 Dipped Glaze Producing Air Bubbles

Posted by Mart on 04 November 2013 - 02:25 PM

Could it be outgassing of your clay body causing the bubbling, and not the glaze?

As I understand it, this is before firing.


....emerging from the glaze covered with air bubbles.


#44886 12 Inch Club

Posted by Mart on 30 October 2013 - 02:49 PM

Throwing stick? Are we carp fishing or pulling 12" tall beer mugs from mud? ;)
(yes, I know the stick you are talking about)

#43756 Knitting Bowls

Posted by Mart on 06 October 2013 - 03:37 AM

i have a friend coming today who is computer literate and maybe she will post a photo for me so you can see the simplicity of the design.  maybe that would pay in your circumstances.

Sorry for the off-topic but the secret is:
Attached File  73-secret.png   29.38KB   14 downloads

Attached File  74-secret.png   16.01KB   2 downloads

After you selected the image, click Attach This File ... and then you need to click "Add to Post"

Attached File  75-secret.png   19.22KB   3 downloads

#43730 Knitting Bowls

Posted by Mart on 05 October 2013 - 01:44 PM

Here is a 20 cm (~8") knitting bowl I made not too long ago http://www.oostuudio...aagen-kudujale/
You can see the slight warping on second picture. I was told it has no negative effect at all, while in use.
So, why worry about it? :)

#41426 New Regs On Silica Dust

Posted by Mart on 26 August 2013 - 06:44 AM

Frederik-W +1!

Dear Americans, all you need to be paranoid about are:
1) your government (including 3 letter agencies)
2) bankers
3) GMO
4) and not getting gypsum into your clay.

Common sense will take care of the rest. :)

#40690 Need Advice, Too Many Options For Firing!

Posted by Mart on 12 August 2013 - 04:37 PM

Screw this raku bs. Seriously. I do not understand why it has to be "raku kiln" and not a normal gas kiln, made of ceramic fiber blankets.

I personally have no wish to waste gas on "raku" and produce this cheesy, fake looking "oh, it's so oriental" whatever. Sorry, but this "raku" obsession makes no sense to me at all :)


#40588 Beginner Needs Suitable Clay For Bonsai Pots

Posted by Mart on 10 August 2013 - 07:32 AM

I made one out of white stoneware clay and used iron oxide (F203) to darken the surface. It has wire and water/air holes at the bottom too. 26,5 cm wide.



Use clay in same temperature range you usually fire.

Have fun

#36083 applying iron oxide to greenware

Posted by Mart on 28 May 2013 - 01:38 PM

What the big difference with RIO. And. BIO. My RIO washes usually turn out black.

Red iron(III) oxide - Fe2O3
Black iron(II) oxide - FeO

At high temperatures, Fe2O3 starts to break down so O and F take off and you are left with the FeO
In oxidation, this is how you get those cool "oil spots" happening on the glaze where Fe2O3 is converting and free O drags F to the surface and leaves it there.
Someone can probably get you more detailed description of the process.