Casting Boxes

I've now sorted out a furnace and most of the associated kit.
However I have no casting boxes (flasks/ cope&drag/ whatever).
I could make some wooden ones cheaply but can't help thinking that
there must be a bloodly great mountain of the proper metal ones
somewhere - after all every school must have had about 25 sets to a
single furnace. Some dealers list them but at £30 it's worth making
them instead.
Anyone know of a cheap source?
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Reply to
Charles Ping
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There is nothing wrong with wooden flasks! When I did my foundry course at tech school in the 1950s, 1/2 of all of the flasks were wooden. The others were aluminium, cast in the school foundry, using larger wooden flasks!
Steve Rayner
Reply to
Steve R.

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