David Woodin

I use containers 1 quart from home depot for the 4 corners.  The individual cups are used yogurt cups about 6 oz.  The test tile, because I am interested in vertical tests are extruded test tiles long enough to make 5 tests per tile times 7 tiles for the 35 grid.  I only use 300 gram batch  for the corners.  The syringe is 60 cc McKesson Syringe without needle order 102-SC60C20.  Each cup has 48 Milli Litres per sample.
David

I am in no way trying to dismiss this method. I apologize if you feel that way. High Bridge noted that he was having different results on his flat tiles vs his vertical tiles, and I made a comment pertaining to that issue. But when you responded that you "haven't seen much difference" between flat and vertical tiles, I felt that will lead people who are not very experienced with glaze testing to think that is the norm, which I feel it is not. And that is my point, nothing more. You asked me to give examples supporting that point, which I did. To then claim those examples do not pertain to the definition of a Currie test does not make them invalid. Glazes do behave very differently depending on whether or not they are fired vertically or flat, and I feel flat tiles are very limiting in how much information they give about a glaze.
 
I studied Curries method in grad school, and I have used it off on on for the past 20 years, and I think it is very worthwhile. I apologize if you got any other  impression form my comments. But even if I did not think it was worthwhile, or if I had ideas on how it could be improved (which I do), this is a public forum and it is important that anyone be able to add to the conversation, whether it fits your definition of what you think the thread should be or not.

I usually make a 20 grid but 35 grid would work fine. A = base glaze + 8% Iron Oxide: B same base glaze + 8% Iron Ox.& 10% rutile;
C same base glaze no colorant: D 10% Rutile.  This gives a line blend from A to C for iron; A to B iron stays at same value but it cross blends with Rutile :C to D line blend for Rutile: This line blend cross blends with iron B to D.  This is impossible to explain but the top row 1 thru 4 Iron is 8%, but 2 to 4 rutile is #2 = 3.33%R + 8% Fe,# 3= 6.67% Rutile + 8% Fe, # 4= 10% Rutile + 8% Fe.  Anyway it is a good method for testing 2 colorants and depending on your base glaze you may get some rutile blue. take a look at www.matrix2000.co.nz
David

I would be inclined to change out the controller for a Barlett.  The kiln itself will be fine but electronics have changed a lot in 22 years and you may be fighting problems due to drying out of compenents, parts no longer made etc.  Euclids can help with getting you up to speed with a new Barlett and possibilily zone control.
David