- March 10, 2009 at 7:33 pm #9326dianewParticipant
Just joined and love reading everything. Do not understand alot though.
I just got my kiln (Jen-ken 15-6) for Christmas. I do not understand what the difference is with the ramps (what each one does). I think maybe if I know this, it will help me to correct everything, like bubbles, squares that turn out to be circles, and lumpy.
An example for my firing schedule is:
ra 1 – 300 1175 .50
ra 2 – 300 1400 .10
ra 3 – full 960 .40
ra 4 – 100 800 .00
I have the pre programed Ez-pro controller. The preset schedule did not work, way to hot.
Any help would be really appreciated.March 10, 2009 at 11:35 pm #11198AnonymousInactive
Hi Diane –
Here’s a brief explanation of the schedule you posted:
ra 1 – 300 1175 .50 – initial heating and bubble squeeze
ra 2 – 300 1400 .10 – this is your process temp
ra 3 – full 960 .40 – rapid cooling and anneal hold
ra 4 – 100 800 .00 – anneal cooling
If you take a look at the firing schedules on this site (under “Tools” in the above menu) you will see that each segment of every schedule is explained. Simply reviewing several of those can teach you a lot about firing schedules.
Hope this helps
Helios Kiln Glass Studio
PaulTarlow.comMarch 11, 2009 at 2:07 am #11199dianewParticipant
Thank you Paul, I will look the firing schedule over.March 11, 2009 at 1:44 pm #11200bookie13Participant
Do not depend on the pre-set schedules of your kiln. Learn to program it yourself and do so every firing.
As I tell my students, learn to “think like the glass”. Try to fire the glass (go through the schedule) in your mind, then set thte kiln. It helps.
Pre-sets are very general and made to be overkill.
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