Jump to content


Member Since 28 Apr 2013
Offline Last Active Today, 06:46 AM

Posts I've Made

In Topic: Cut, Spiral Bit Warped In Kiln

19 November 2015 - 04:10 PM

I'd been wondering about a variant of Chris's idea. Fire fully-cut and unglazed to cone 6

with the pot resting on its rim. Looking at the first picture most of the slumping seems to

be happening near the rim. (At the least you are reducing the spiral by its thickest 1800.)


Then low-fire glaze.  BTW glazing a vitrified pot can present problems, unless you are

using a "painting" glaze full of gums.

In Topic: Tin Can Raku Glaze

19 November 2015 - 04:42 AM

A google for raku glaze "tin-can" brings up several recipes


In http://general.utpb....aku-texture.htm

Tin Can Matt Rainbow

Gerstly Borate 4 Neph. Sy 3 Copper Carb 1 Black Nickle ΒΌ



In http://members.chell...ku-glazuren.htm

Glaze name: Tin Can

Firing: Raku
Color: metallic patina
Date: 05/13/98

Recipe: (Percent, Batch)

Gerstley borate            48.48        4.00

Nepheline syenite          36.36        3.00

Copper carbonate           12.12        1.00

Black nickel oxide          3.03        0.25

                        --------    --------

Totals:                   100.00        8.25


Recipe in parts by volume.

From Piepenburg's book "Raku Pottery".  Should be the consistency of very thin milk.

In Topic: Can't Rub Anything But India Ink Into Cone 5 Clear Crackle Glaze

15 November 2015 - 03:33 PM

You may find an old thread of interest


In Topic: Kiln Controller

15 November 2015 - 09:17 AM

Purely web browsing...


In the UK Potterycrafts advertise the ST315, but in the associated video the controller is clearly marked ST315A


It looks like the manufacturer's web site is at http://staffordinstruments.co.uk/

and I cannot find any references to a ST315B on it. Although it does mention cable options.


The web page for the ST315A seems to be http://staffordinstr...ure-controller/

and it contains downloads for the Datasheet, User Manual and Installation Instructions. You might want to look at the bottom RH

corner of p3 of the Installation Instructions, as it mentions a a yellow warning label which the indicates factory configuration options.


BTW a ST315B is advertised here, but I didn't notice any differences mentioned.



I have seen pictures where the case clearly shows ST315, and others where it shows ST315A. Does yours show 315B?



In Topic: Making Sodium Silicate.

12 November 2015 - 08:52 AM

or making a sort of castable refractory gluey thing.


Ever heard about geopolymers? These are synthetic aluminosilicates used as a type

of cement (much closer to Roman cement than Portland cement). Also - just possibly -

what parts of the pyramids were made from (there is a JACS paper).


Also used in the ACS mug-drop event.