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Diz

Member Since 26 Aug 2012
Offline Last Active Yesterday, 11:04 PM
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Posts I've Made

In Topic: Woot! Trying It Out Finally!

26 April 2015 - 08:30 PM

Have fun with it Rebekah - you will get new and interesting results...and hopefully the colors you are looking for.

 

Regarding a scale - you can buy an expensive gram scale, but you can also get inexpensive scales from Amazon that do grams and offer the 'tare' .  This is the link to the scale that I have been using for a couple years, with success,

 

http://smile.amazon....ords=gram scale

Ozeri Pronto Digital Multifunction Kitchen and Food Scale, Elegant Black   $12.47 Prime

 Granted it does not do 'tenths of a gram' buy I round the value up or down and have noticed no ill effects.

 

Let us know how the firing goes!


In Topic: Oxygen Sensor/probe - Commercial Vs Homemade Auto Sensor

14 April 2015 - 11:37 AM

Thanks!  I'll put your suggestions to use when I fire later this month.  I appreciate your time and the fact that you share your knowledge so freely.  It helps us all.

 

Diz


In Topic: Oxygen Sensor/probe - Commercial Vs Homemade Auto Sensor

13 April 2015 - 06:49 PM

Well - I am definitely self taught!  Some places say reduce around 1650 for body and then again around 9 for glaze reduction.  When I started I was told to do BR from 1650-1850 and then open it up a bit but try to keep it in mild R all the way to the end going heavier around cone 9 to 10 down.  A couple of times the kiln has done every step without me touching a damper or port - wish that kiln god would visit more often!  I rarely can get flames out my bottom peep, even with top port about 90% closed and my 4 primaries closed to only 1/4" open on each.  Once I close the primaries during a firing they stay at that setting til the end and I just adjust my top port only(also have a baffle shelf 1.5" below the lid to hold back the flames a bit).  Last summer I learned a lot with help from Mike at Continental Clay (a GREAT place for supplies ad help) but now I am focusing on improving my reduction.  Also my firings generally last 10-12 hours, if that says anything about my firings.

 

I'll stick with my auto sensor, and this summer work for reduction by looking at the spy holes and watching my numbers on my sensor.

 

One question - something I have never been able to manage - how do I stall the kiln during reduction? Mine just marches right through - and that may be the root of my problem.  I have heard that it should take 1 hour (stall) for R but mine can be as short as 1/2 hour as the temps march on.

 

Thanks for the help - much appreciated.  This sight is a goldmine for info - so freely shared.

 

Diz


In Topic: Oxygen Sensor/probe - Commercial Vs Homemade Auto Sensor

13 April 2015 - 01:37 PM

Thanks for the info guys...

 

First I would LOVE to get another kiln but again the cost holds me back - never considered Craigs list for such a large purchase.  Will start looking...

 

With an oxyprobe I was hoping that it would allow me to 'fine tune' my damper settings, that it's R readings would be truer since they were internally taken. Currently with my auto oxy, I have it placed in the center of a wall between flame ports and about 2/3 of the way up the side. I do have the sensor sitting above the top port so it sits in the flicking flames in a mix of exhaust and fresh air so my readings fluctuate wildly.  I rarely get reduction on the bottom shelf  which is 5" off the bottom of the kiln.  I have had perfect reduction only once in MANY firings and most of the time I will have some pieces show total R and others will have half the bottom etc.  I keep notes about times and temp and my R readings but without college experience behind me I don't know how to fine tune that info to my best interest.  Overall my kiln usually fires within 1 cone top to bottom by the end - have that figured out - but the nice consistent R escapes me.  Guess I'll just have to be patient...

 

Diz


In Topic: Iron Speckles

05 April 2015 - 10:31 PM

Min - both are good looking glazes!  Thanks for sharing - the speckled one catches my eye!