Molding a new crucible for metal casting 

No doubt. What was the point

Why the coatking

I second this request please, what are the materials Just ordinary potters clay? Glasing preference? How did it perform?

@@dystopiantea4582 so do i

Cheers man...I am very aware, I will be super cautious believe me!

Hey Mark, (or anyone)do you have any videos on this subject? I'm researching for knowledge and anything, everything, good, bad, or indifferent will help me set up. Thanks

The 20KG Devil Forge is MASSIVE.

It is fire clay and crushed ceramic/pottery or fired clay. The recipe is in this video. www.youtube.com/watch?v=s6ZmD... I hope that helps.

Lol! Check the description......I hope that helps! :-D

Same problem

Grog - Crushed unglazed pottery or brick used as an additive in plaster or clay. It is clay that has already been fired and then crushed up. Being fired it is a refractory material, relatively stable under high temperatures. I hope that helps.

@@JimmyCogg Yes, you helped me a lot my friend! thank you very much . from a Brazilian friend !

0777646409 call me

با عبد العزيز كيداير

Hi Mike, I've not used this 3 litre one yet. It has dried out well, no obvious defects. It's winter here in the UK. When the weather gets better I will fire it, glaze it and then, if free of major defect, use it. My smaller one litre crucibles, made with the same process, are great and work very well. Cheers.

@@JimmyCogg so? Have news or a recipe? Thx

Sure. The recipe is in this video. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-s6ZmDY5Vma8.html

Hi Thomas, I've not made a clay graphite crucible. I've purchased some powdered graphite to use as an additive and mold release agent from ebay. I use standard fireclay for mine which are a mainly a mixture of fireclay and grog (crushed firebrick) I understand tha clay graphite crucibles seem to require a more industrial process, plenty of pressure. Cheers. Regards, Jim

I think the metal container would expand and crack the outside of the crucible

Hi, I don't know about that. That would be a worthwhile experiment. The clay acts as a binder and has moisture in it to help it bind and that must be dried out sufficiently before firing so that the final pot has strength and integrity at the high temperatures that it will be taken. The castable refractory would have to do the same thing to be any good. I would try it, dry it and fire it and look at the properties of the fired piece. If it has sufficient strength when fired, and stands up to the temperature of the metal being melted, why not give it a go. I would be interested to see the results of that.

It is a concrete mould. I put the mix in the other video in the sequence. Basically fire clay and grog with a small amount of water to moisten it.

Hi, I've not used them for iron, only for Brass/copper. Iron is a much higher melting point. I don't see why they can't be used for iron. The clay used however must be a high temperature firing clay otherwise it will break down under the high temperature.

The material is "grog" which is already fired ceramic material crushed into powder for example crushed fire brick. The binder is fire clay moistened with a very little water.

You're right and I did make some marks.

Batu bata tanah liat dihancurkan dan dikonsolidasikan dengan tanah liat mentah yang dibasahi dengan sedikit air

@@JimmyCogg terima kasih.. Informasi ini sangat membantu..

@@workshop1nd Sama-sama. Saya harap ini membantu.

Green sand is a mixture of powdered cat litter (plain) and finely sifted sand, lightly dampened. Not sure of ratio but I think it's 2 parts sand to 1 part clay. Again, have not made any yet.

HI Raymond, sorry but there was some music playing in the background and the video was censored soundtrack wise on account of that. The recipe is in this video. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-s6ZmDY5Vma8.html I hope that helps.

Yes, very sorry, my video skills are very poor.

If you read the description, you would have found out.

Spot on. Any help you can offer is very welcome. Cheers.