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Arnold Howard

Member Since 26 May 2010
Offline Last Active Yesterday, 02:33 PM
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Posts I've Made

In Topic: Why Don't Elements Glow Outside The Kiln.

Yesterday, 10:04 AM

Twisting the ends of the element with an extra piece of wire reduces the electrical resistance at the pigtails. If an element connector is loose, however, the connector will glow pink. The connectors and terminals must be tight. A loose connector on a relay will produce enough heat to destroy the relay.

 

Sincerely,

 

Arnold Howard

Paragon Industries, L.P., Mesquite, Texas USA

ahoward@paragonweb.com / www.paragonweb.com


In Topic: What I Need To Know About Changing The Thermocouple.

25 June 2014 - 11:54 AM

I have been doing a cool down program for years, which bring out the speckles in my stoneware nicely. But, when I spoke to the guy at Skutt, he said he never heard of a cool down program like mine(with attitude). So now I am wondering if I have been doing it wrong. I hold at several temperatures and let the kiln cool from one to the other without putting in a rate to slow the cooling from one to the other. But I start holding at 1800 and let it drop at 50 degree intervals until 1550 with the longest hold at 1600.

There are many ways to program the Ramp-Hold mode. To slow the cooling, most people add a segment that contains a specific cooling rate. Adding segments with holds and full rates, as you have done, is another way to achieve similar results. (The full rate allows the kiln to cool at its normal cooling rate.)

 

Including witness cones on at least one shelf in every firing will simplify the calibration of a new thermocouple. The witness cones will also alert you if the thermocouple begins to drift in temperature.

 

Sincerely,

 

Arnold Howard

Paragon Industries, L.P., Mesquite, Texas USA

ahoward@paragonweb.com / www.paragonweb.com


In Topic: Help - Cone Bending/ Firing Issues

19 May 2014 - 05:56 PM

I've seen a cone bloat like the one in your picture. However, it bloated because it was fired very rapidly. It was a self-supporting cone that bloated and distorted so severely that it couldn't bend. I had fired it to about 1300F in 15 minutes as an experiment.

 

I think your defective cone is a fluke and probably the only bad one in the batch.

 

Sincerely,

Arnold Howard

 

Paragon Industries, L.P., Mesquite, Texas USA

ahoward@paragonweb.com / www.paragonweb.com

 

 


In Topic: Evenheat Kiln Element Meltdown

14 May 2014 - 07:39 AM

The element connectors must be very tight. A loose connector will burn out, breaking the element at that point, because the connectors will get too hot. What type of connectors did you use? Can you post a picture?

 

Sincerely,

 

Arnold Howard

Paragon Industries, L.P., Mesquite, Texas USA

ahoward@paragonweb.com / www.paragonweb.com

 


In Topic: Controller Upgrade/replacement

13 May 2014 - 06:06 PM

If you determine that the controller is receiving power from the transformer and that the controller is dead, you can return it to Bartlett Instruments. Sometimes they can refurbish a controller for much less than the cost of a new one.

 

Sincerely,

 

Arnold Howard

Paragon Industries, L.P.,

Mesquite, Texas USA

ahoward@paragonweb.com / www.paragonweb.com