It's supprising that the crucibles get eaten that bad with your furnace, as many iron melts and attempts that Ive done with my crucible, I have very little wear on it and other than a tiny bit of slag drips on the outside of it, it looks like brand new. I think the difference may be that I dont run my air and fuel very high, and I have a pretty deep bore on my furnace that allows for quite a bit of combustion beneath the crucible and up around it, just everything raised up with firebricks/plinth blocks. Pretty neat trick with the wire, Ill have to remember that one.
Between 7-10 melts the crucible still looks like new but after that it loses the protective glaze so that is when the outside surface looks terrible. Someone a while ago suggested that it was due to oil firing but the same thing happened when I used propane. I like to have have my iron very hot and the only way to do that is to run the furnace close to maximum but it wears out the crucible faster.
@@luckygen1001 Is there any way to reglaze the crucibles? I've seen random videos where a clay, graphite, sodium silicate mixture is painted on and let to dry and then fired? I trust your instincts though and would love to see an experiment where you try it and judge the viability!
@@luckygen1001 Yeah it'd be a good one eh. Talk about pricing of a crucible. Pricing of clay-graphite-sodium silicate. Talk about the process and how much extra time it takes to paint on and fire. Whether it's bloody worth it or a waste of time. You're the #1 UA-cam Cast Iron Foundry resource and the hottest shop furnace around. Couldn't think of a better Foundryman to do it. Your crucibles take a mad beating!
Good morning Lucky, interesting and useful as always! Like the wire trick. And also realising I made my hoop a bit big. The crucible's center of gravity when full is way off being where my hoop sits... thanks for the vid ;)
I really like your information videos. I have two question for you 1 are there specific dimension for the the wedge test? and 2 where do you get your crucibles.
Yes there is but for most small castings 13 mm for the base, 25 mm high and 75-100 mm long so they will break easily. I get my crucibles from skamol Australia.
@@luckygen1001 Thanks I am sorry to have repeated a question you had had 3 week back on crucibles sorry I have tried to contact Skamol and Fresco with absolutely no luck. both the Syd and Adel. phone say they have been discounted Skamol - Casting don't answer. Neither seem to have an online sales dept. Any further suggestions? I am reluctant to buy from China. Pete Again Thanks
Thank you for continuing to make videos. Please never stop!
Thank you for watching my videos
Thanks for the good advice.
Bloody fantastic. Cheers
Thanks for the tutorial.
Some very simple tips there. Good to know.
thanks gen always good vid an im learning cheers
Thanks for sharing!
It's supprising that the crucibles get eaten that bad with your furnace, as many iron melts and attempts that Ive done with my crucible, I have very little wear on it and other than a tiny bit of slag drips on the outside of it, it looks like brand new. I think the difference may be that I dont run my air and fuel very high, and I have a pretty deep bore on my furnace that allows for quite a bit of combustion beneath the crucible and up around it, just everything raised up with firebricks/plinth blocks. Pretty neat trick with the wire, Ill have to remember that one.
Between 7-10 melts the crucible still looks like new but after that it loses the protective glaze so that is when the outside surface looks terrible. Someone a while ago suggested that it was due to oil firing but the same thing happened when I used propane. I like to have have my iron very hot and the only way to do that is to run the furnace close to maximum but it wears out the crucible faster.
@@luckygen1001
Is there any way to reglaze the crucibles? I've seen random videos where a clay, graphite, sodium silicate mixture is painted on and let to dry and then fired? I trust your instincts though and would love to see an experiment where you try it and judge the viability!
@@RaspyOB174 I have heard of people coating their crucibles to make them last longer but I have never tried it maybe i should try it one time.
@@luckygen1001
Yeah it'd be a good one eh. Talk about pricing of a crucible. Pricing of clay-graphite-sodium silicate. Talk about the process and how much extra time it takes to paint on and fire. Whether it's bloody worth it or a waste of time. You're the #1 UA-cam Cast Iron Foundry resource and the hottest shop furnace around. Couldn't think of a better Foundryman to do it. Your crucibles take a mad beating!
Good morning Lucky, interesting and useful as always! Like the wire trick. And also realising I made my hoop a bit big. The crucible's center of gravity when full is way off being where my hoop sits... thanks for the vid ;)
Center of gravity is far more important with iron as it is 2.5 times heavier than aluminium.
Very interesting.
Have you ever tried making your own crucibles?
Interesting video indeed. Could I please ask where you buy your crucibles. I've been looking alot without much success.
I buy mine from refractory and ceramic but they have changed their name to skamol also you can get them from foseco.
I really like your information videos. I have two question for you 1 are there specific dimension for the the wedge test? and 2 where do you get your crucibles.
Yes there is but for most small castings 13 mm for the base, 25 mm high and 75-100 mm long so they will break easily. I get my crucibles from skamol Australia.
@@luckygen1001 Thanks I am sorry to have repeated a question you had had 3 week back on crucibles sorry
I have tried to contact Skamol and Fresco with absolutely no luck. both the Syd and Adel. phone say they have been discounted Skamol - Casting don't answer.
Neither seem to have an online sales dept.
Any further suggestions? I am reluctant to buy from China. Pete Again Thanks
@@petelusted7598 You could try foseco Australia. They should have crucibles
Why don’t you make interchangeable rings various diameters to pour your crucibles.
It is a lot more work to make different size rings, much easier to twist wire so the crucible sits in the right position.
hay Lucky do you pre heat temper your new first time crucibles a lot of people recon you have to. whats your opinion on this subject
The crucibles I use have a label on them which says READY ANNEALED so they do not need to be tempered. I use morgan crucibles.
@@luckygen1001 thank you lucky
А если намазать тигель графита глиняной смесью, это сработает???
Я никогда этого не пробовал.
@@luckygen1001 Я как то видел Индусы таким способом восстанавливают свои сгоревшие тигли.
👍🍺🍺
Hey dude : it looks like you make things easy !
Hey Luck : what kind of glue do you use in the sand ?
Do you mean core sand or green sand?
@@luckygen1001
the green sand Luck !
@@admilsonalmondes5765 I use foundry grade bentonite, 7-8%
@@luckygen1001
ok , thank you very much for the information my friend