[PSUBS-MAILIST] annealing

[Brian Cox via Personal_Submersibles]

It would not be a very impressive picture.  An old electric oven I got out of a oven junk yard.  I did actually get the controller and thermostat but I'm just doing it manually this time around.  I did however purchase 4 digital temperature sensors that I've placed at various locations, one in an identical acrylic disk like the ones I'm annealing, one in the middle, one at the top and one in another block of acrylic.  I'm able to control the temperature extremely well, earlier I calibrated the oven with my heat source.  Rather than rely on an on off thermostat controlling an electric heating element, what I'm doing is running a heating element controlled by a rheostat ( one of the top burners).  That way the burner is always on, but delivering a specific amount of heat depending on how high I turn the rheostat up or down.  So what happens is the oven loses heat at a fairly constant rate, wherever I set the dial the oven will stay at that temperature.  As long as there is no radical fluctuation of the room temperature the oven temp will be very even, so far it's worked out really well. 

The book has a number of different scenarios and recommendations for times and temperatures.  The main thing is the hold temps and a very gradual ramping.

Brian

--- personal_submersibles at psubs.org wrote:

From: Alan via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] annealing
Date: Tue, 16 Sep 2014 07:23:44 +0700

Is that with the kiln controller off ebay Brian?
Alan

Sent from my iPad

> On 16/09/2014, at 7:10 am, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Brian,
> That sounds very promising, how about a picture of your oven set up.
> Hank
> --------------------------------------------
> On Mon, 9/15/14, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Subject: [PSUBS-MAILIST] annealing
> To: "PSubs" <personal_submersibles at psubs.org>
> Received: Monday, September 15, 2014, 1:01 PM
> 
> Annealing going really well
> !    Holding steady at 285
> F Brian 
> 
> -----Inline Attachment Follows-----
> 
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