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jrgpots

Member Since 15 Mar 2013
Offline Last Active Yesterday, 12:31 AM
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Posts I've Made

In Topic: How Much Does A Refractory Castable Shrink On First Firing?

11 January 2017 - 09:12 PM

Kiln construction oopsies,

 

 

By the time we found the problem the fellow went out of business, go figure. Still irritates me. (slight understatement) 

Ouch!


In Topic: Preventing Glaze From Running On Pipes

07 January 2017 - 12:51 PM

John, now you are talking to my heart....how to pack a kiln. Is there anything published about the mystery and science of "kiln packing?"

Also, if there is a book like "Even Kiln Firing for Idiots", many of us would love to wrap our brains around it.

When you, Neil, Mark, and Marcia start talking about bag walls, air space, and firing schedules it is so cool.

Jed

In Topic: Beginner Clay Questions

17 December 2016 - 05:11 PM

I had problems with wide bases when I did not open my cylinder wide enough at the base with my initial opening of the clay. I then tried to widen it with subsequent pulls.   When I opened to the right base width initially my thick bases went away as I pulled the walls.

 

Jed


In Topic: Coma Clay

14 August 2016 - 09:21 PM

 

 

Marcia: I gave it the name "coma", because the clay has no memory. 0.18% MGO, 0.31 FE.. ultra white at bisque/maturity.

 

:)

 

Nerd

 

 

Coma clay...........If  you fired it beyond the point of vitrification ,, you call it "Coma-toast".    .......just a thought. :D

 

All kidding aside, it looks great.


In Topic: My Kiln Build

09 August 2016 - 02:24 PM

My stem wall can be 21" or 25" tall.  Would it be better to have a 21" wall and a 12 " arch ( I have already made it) resulting in a height of 33"; or use a 25" wall with a NEW arch of 7" rise which would make a total height of 32" ?

 

Any suggestions?

 

For a forced air (power burners) downdraft kiln, what is the chamber size to flue ratio?  Just rechecking everything...

 

 

Jed