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clay lover

Member Since 08 Apr 2010
Offline Last Active Today, 08:12 AM
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Posts I've Made

In Topic: The New Extruder

17 May 2015 - 08:54 PM

I have the 5" square Scott Creek, and it nearly drove me nuts until I figured out how to keep the center in the center. I put the die set up on the box end, and BEFORE I drop the plug of clay in the box, I sort of stand on my head, center the die and push lugs of clay up into the space that the clay will come out of. The plugs hold the center where it needs to be until the extruding clay pushes the plugs out. I guess you could cut come material that would be exactly the thickness of the wall measurement and that would work as well. I understand how irritating this is, and it took me a LONG time to get a system worked out that settled this problem. But now I get along well with it .

In Topic: Using Vent Caused Underfiring ?

14 May 2015 - 09:21 PM

Cones, self supporting, on every shelf, same location, 4 " right of thermocouple, about 5 " in from edge of shelf ,05 and 04.


In Topic: Using Vent Caused Underfiring ?

14 May 2015 - 06:28 PM

OK, I just unloaded the re fired bisque.  With the vent running, and the following firing rates,

100*/hr to 200* no hold

150*/hr to 600) hold 30 min

200*/hr to 1650* hold 1 hour

100*/hr to 1920* hold 1 hour

I got hot cone 03. middle was maybe an 02, I didn't have those cones to put in. Exactly what Neil said I would get, .

With this same firing rate and no vent, I have been getting 05-04 for 3 years or more.  WHY did the vent make it fire hotter?

 

David it is on the side of the kiln, kiln is 7 years old. The TC doesn't look like either of those pics.  has the tip showing with a 2 part ceramic tube covering the rest of it.


In Topic: Using Vent Caused Underfiring ?

14 May 2015 - 02:32 PM

I always use Self supporting cones.  the TC is in a 2 part ceramic tube, it is the one the nearest Skutt dealer sells for this kiln. I have a new TC ordered, should have it first of the week. I'm headed to the studio to unload the test refire of the bisque, using the firing schedule I have always used, with the vent on. we'll see what those cones look like,, then make a plan.


In Topic: Using Vent Caused Underfiring ?

14 May 2015 - 06:24 AM

Oh, believe me, that is not something I will be messing with on my own.  I have discussed both the bisque and glaze schedule I have been using a with a Skutt tec several times and he has not suggested calibrating the TC . He wants me to replace the TC and see what that does.

Sounds like the calibration is something I can check by going through the menu of options where I checked the amps and volts, I will look at what other assessment option keys I have there.  Very much electricity/computer and I am way over my head.