[gingery_machines] Re: Electric furnace parts update

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

--- In gingery_machines@yahoogroups.com, Ron Thompson <ron@...> wrote:
>
> The good news is the PID controller I ordered from Hong Kong through
> ebay arrived in only 12 days!
>
> The bad news is I was snookered. More accurately, I snookered myself, as
> all the info was there had I read it all carefully.
>
> The controller uses a type K thermocouple (âˆ'200 Â°C to +1350 Â°C / -328 Â°F
> to +2462 Â°F range), and comes with it.
> The control face has 4 digits.
> I was surprised to learn it only goes up to 400C. Not quite good enough
> for aluminum! I fail to understand why this limitation, as all the
> hardware seems fully capable. The limit must be in the micro-controller
> programming.
> The good news is the thermocouple is killer. Nice braided stainless
> steel sheath and crimped on terminal lugs.
>
> Anyone know of an easy mod to make this thing go higher?
> <http://www.ebay.com/itm/180672227828?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649>
> ebay auction #180672227828
>
> You can program the type of thermocouple, so I wonder if I can lie to
> it?<GRIN>
>
> --
>
>
> Ron Thompson
> On the Beautiful Florida Space Coast, right beside the Kennedy Space Center, USA
>
> There are two kinds of posts on newsgroups.
> 1. This is what I have done...
> 2. This is what I think...
> Be aware of the difference!
>
> http://www.ourcadguy.com/
>
> http://www.plansandprojects.com My hobby pages are here:
> http://www.plansandprojects.com/My%20Machines/
>
> Visit the castinghobby FAQ:
> http://castinghobbyfaq.bareboogerhost.com/
>

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