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Old 02-04-2016, 04:30 PM
David Eye David Eye is offline
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Join Date: Dec 2015
Location: North Central WI, USA
Posts: 74
Thanks Doug, yes it will be fun and I'm getting anxious to build my kiln and get going on things.
I will take every precaution that my blades don't get over 1475F, give or take a few degrees.
I will definitely make sure my kiln is well stabilized first and my controller and TC will be of high quality too.

The way I am going to heat my blades in my elect kiln is exactly what many experienced people are doing, I believe some guys on this forum and many on another forum. A slightly longer soak actually accomplishes the same thing....please read on.
Basically, the method they are using that I described is just making sure the 1095 blade is actually up to set temp of 1475F BEFORE the timed soak. This equates to approx. the same amount of timed soak of no more than 10 minutes @1475F. It just takes approx. 4 minutes for the knife to actually first get up to 1475F.
Technically, the timed soak of no more than 10 minutes is NOT supposed to commence until the blade is actually at 1475F.

If I'm not mistaken, it's basically the same as Stuart described of putting the blade in when the kiln is stabilized at 1475F and waiting for the kiln to "rebound" to 1475F because he said it probably takes just a few minutes or so for that to happen anyway. He then did the timed soak after the kiln rebounded.
Soooo.... after my kiln is stabilized at 1475F for awhile, I will then introduce my blade to the kiln and have it in there for exactly 4 minutes (the kiln MAY or MAY NOT rebound in slightly less than 4 minutes, but the BLADE NEEDS 4 MINUTES to get to temp according to testing)......and then I will do the 5-10 minute soak. At no time should the blade get over 1475F if all goes well with my equipment. The average of 4 minutes for the blade to actually get up to 1475F was proven by extensive testing and I guess I am going to believe that based on their methods of testing.
I can always shorten the actual timed soak a little if need be.
I am planning on about 8 minutes of timed soak since I my research found that a soak of 5-10 minutes @1475F for 1095 was plenty.

As an added note, one individual on the thread I mentioned I found on another forum stated that you can help avoid temp overshoot by putting the elect kiln in some kind of "idle mode" during rebound when you put the knife in. This apparently keeps the heating elements from coming on right away, or too much or even at all....I'm not sure. This method will supposedly use residual kiln heat for a short time until you tell the controller to proceed to original set temp of 1475F.
I would gladly refer anyone interested to read said thread/posts on the other forum either right here or by PM, but ONLY if the moderator here gives me permission.
DAVID

Last edited by David Eye; 02-04-2016 at 06:10 PM. Reason: Important addition versus new post.
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