Jump to content
I Forge Iron

Good casting metals?

Little Forks Forge

Recommended Posts

I am getting really intrested in casting metal. Years ago I cast pewter beltbuckels in a RTV mold. Now I would like to cast motifs for wrought iron beds (connecting square and round rod in the motif rather than welding and buffing).
I have seen pictures of a prosses using steel permanent molds and ?? type of metal in a electric foundry.


Is there a metal that is strong enough to make the connections for a bed, but have a low enough melting point to use RTV?

Link to comment
Share on other sites

not if your 19 :P

seriously, the design of the bed and connections are huge variables in addition to the strength of the material

looks like tin and lead are about the maximum that RTV can deal with, in fact pure lead maybe too hot for most RTVs (620F), but there are lots of alternatives. (That was a quick search, not exhaustive)

Hofi mentioned one the other day, he saw a medieval era demonstration of lead cast around a steel balustrade, using I think it was a two part clay mold. If you where to do the welds then cast say pewter around the junction....

could get you where you want to be, strength of the alloy is eliminated, a few holes in the steel would act as anchors (when its not a junction)

alternately there is aluminum, and hundreds of other alloys that may be too hot for RTV but basic ceramic shell casting, plaster, sand casting ect could serve.

Good luck ;)

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...