The Shop > Metal Stuff
Foundry Furnace for the Tiny Shop
sparky961:
Looking good.
Not that it helps you now, but pearlite (slightly crushed) is another good addition to DIY refractory. Available at garden centres.
vtsteam:
Sparky I've got plenty of it on hand, and used it 17 years ago in the lid of my first furnace (see my Gingery lathe thread), but found it eroded pretty easily compared to the current lid lining, and was difficult to patch after.
The plaster of Paris mix I'm using now is, in my experience even more insulative than the perlite mix I used before. The furnace shell stays noticeably cooler after a similar melt.
If you've ever felt plaster of Paris once it's dry, it is surprisingly light in weight. That's because it is highly porous -- and therein lies the insulative quality.
There's a million ways to skin a cat -- I've worked through a few of them ...enough to know what works best for me -- others will certainly vary. :beer:
awemawson:
. . . Ah all very well BUT
. . . How did they cast the ancient Pillar of Dehli . . .?
Google it :clap:
vtsteam:
Forge welded wrought iron, not cast iron, according to Wikipedia.......when I Startpaged it. :poke:
awemawson:
Well done Steve - you are the only one to find out :clap: :clap:
It's a myth that it is cast stemming from the Victorian era of the Raj when of course a lot WAS cast !
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