Mixing Mason Stains
Posted 14 November 2010 - 09:52 AM
Posted 14 November 2010 - 10:03 AM
I just mixed a nice red with deep crimson Mason stain and got a great red using 10% I may try 8% next time. You certainly don't need anything higher than 10%. If you were mixing an underglaze stain it could go up to 25% but not for a glaze colorant. If you don't know how much dry is in there, take a 8 ox plastic cup, put 1 1/2 inches of glaze in it and call that 50 grams of dry with water. Then measure out 4 grams..8% of your stain, add to the glaze, sift it, and test fire it. That should give you a good visual for estimating.
Posted 14 November 2010 - 10:12 AM
Posted 14 November 2010 - 11:35 AM
3= high fire 2380 F
5= don't use with zinc
9= glaze should contain 6.7%-8.4% calcium
The ^6 glaze i used fit the above description. Red was very nice at 10% and I may try to tweek it with 8% stain and a dash of iron,
Call continental and ask them if the glaze contains zinc and what is the calcium content. They won't give you the exact recipe maybe, but they should be able to tell you that much.
Best to try a small test to see how the stain reacts to the base glaze. It would be very costly not to do a test and to have a bad result.
Posted 14 November 2010 - 01:22 PM
There is a jpg on my gallery in the album Forum Discussion
.This is using 10% deep crimson Mason stain in a glaze altered by Ron Roy for Sue Hintz Version#2 ^6 OXIDATION
Cornwall Stone 33.5
Ger. Borate 10
Deep Crimson 10%
Posted 15 November 2010 - 08:27 PM
Thanks for the recipe, I really appreciate it.
Posted 16 November 2010 - 08:48 AM
Google mason Stains and find the reference code chart for a started. Then find out if there is zinc in the glaze and what % of Calcium.
Posted 19 November 2010 - 03:07 PM
Posted 27 November 2010 - 09:42 AM
As smart Cat says..not all stains are created equal. You need to test and you need to know the glaze base ingredients in regards to the reference codes.
Posted 29 November 2010 - 08:00 PM
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Posted 30 November 2010 - 07:16 AM
Here is a similar question. Part 1 Is it advisable to mix a mason stain with a slip prepared from white stoneware from Great Lakes Clay? (I am thinking dry stain with wet clay) I have very limited resources for glaze chemistry but would like to see if I can use a selection of colored slips on greenware then add a clear commercial glaze over that. Electric kiln firing. Part 2: can this be raw firing, that is add the colored slip and the clear glaze and once fire it?
Posted 30 November 2010 - 07:25 AM
#1 reference code is : can be used as a body stain.
Then check your stain reference codes: http://www.masoncolo...ic_RefGuide.asp
6021 dark red codes are 1,3,6
6003 Crimson codes are 3,5,9
The "1" means the dark red can be used as a body stain as in slip, the crimson can not.
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