Ron,
One nice thing about the Hartman furnace is that the soft firebricks can easily be slotted in order to hold the element. I used a table saw but if I do it again, would use a simple hacksaw and my finger. The stuff cuts like balsa wood except is brittle.
Rick
Rick.Sparber.org
On Sep 12, 2011, at 7:31 AM, Ron Thompson <ron@ourcadguy.com> wrote:
> On 9/11/2011 10:50 PM, confed2001 wrote:
>> Am I to understand that you are using this to control the temperature
>> of an electric foundry such as the Gingery "Little Bertha"? I got a
>> set of plans for an electric foundry from this site:
>>
>> http://www.dansworkshop.com/aluminum-foundry/homebuilt-electric-melting-furnace.htm
>>
>> It works & I have been using it for several years, but despite what
>> the plans say it does not get hot enough to melt copper much less
>> brass. I constructed the controller as described in the plans, and am
>> using the heating elements stated, but aluminum is the best I can get
>> out of it. If this controller will raise the temp of a small electric
>> foundry than I need to get one.
>>
>> Brian
>
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