Re: [gingery_machines] Re: starting with the *charcoal foundry*

 

I had to buy a welding apron because when I melted a lot of metal I felt a
little more heat from the crucible then I wanted...my legs and tommy got a
bit warm from the heat..also it would not hurt to put a small board on its
side so the metal has no chance to get on your shoes..I have not done that
myself but after I get into my new shop next week I am going to..getting a
hot foot is no fun..lol I agree with wonk..practice a lot .Gregory




-------Original Message-------

From: Wonk
Date: 10/25/10 13:50:20
To: gingery_machines@yahoogroups.com
Subject: [gingery_machines] Re: starting with the *charcoal foundry*


If you keep your melts small then you won't be lifting the crucible up very
far and a good dry sand bed around your area should be able to contain any
spills. Lifting a red or hotter crucible will be difficult without a set of
metal tongs. The tonds should fit the crucible in a manner so your not over
squeezing which could crush the crucible which may cause the molten metal to
splash sideways or down.
Practice is the answer- I use dry sand in a crucible to practice lifting and
pouring.
There are some great 'You Tube' movies on the viking method!

Cheers Gene

--- In gingery_machines@yahoogroups.com, "jeflhl02" <greengold02@...> wrote:
>
>
> [quote=Wonk]look up viking methods for foundry[/quote]
>
> Good idea. I searched around the internet and so far, I have found this
> useful link:
>
> http://web.comhem.se/vikingbronze/casting.htm
>
>
>
> The useful info I learned on that page was
>
>
>
> a. the charcoal hearth
>
> This is what Wonk is referring to when he mentioned the clay lined pit
> in the ground.
>
>
>
> b. Another way I can make a crucible is to model the clay around a stick
> but I have to ensure that the stick is coated with wax. The links below
> show how to make wax from scratch.
>
>
>
> http://www.utexas.edu/tmm/exhibits/glen_evans/natural_history/candelilla\
> .html
>
> http://www.essortment.com/all/makenaturallip_tvxz.htm (wax section)
>
>
>
> From what I see so far, the problem I forsee regarding crucible
> construction is their durability. I have to have a good mix that would
> case the crucible to shatter/break. Although, I am curious. If the
> crucible breaks/bursts, will it be an outward blast that will send
> pieces of the crucible AND molten metal outward (toward me)? OR Will
> the crucible fall to pieces in a downward direction?
>
>
>
> [quote=Rex]How do you plan to cut off the sprue, if you use one? Are you
> pouring open face or a cavity in a hole?[/quote]
>
> I don't think I will use a sprue since I'm not sure what you
> mean by "cutting off the sprue". I know what a sprue is and
> what a sprue cutter is, (via Google Images) but what spruce would I be
> cutting off...? The pictures I'm seeing on Google may not be doing
> a good job of visualizing this... Also, I will learn how to pour both
> open face and cavity in a hole.
>
>
>
> open face:
>
> http://www.foundry101.com/Puzzelstepbystep%20084.jpg
>
>
>
> cavity in a hole:
>
> http://www.foundry101.com/Puzzelstepbystep%20088.jpg
>
>
>
> [Non-text portions of this message have been removed]
>





[Non-text portions of this message have been removed]

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