Here is a video by "Olfoundryman", who is from Australia.
I make the habit of comparing notes between every source of foundry information I can find, and he is an important source for me as far as casting aluminum.
I had not paid much attention until recently to olfoundryman's videos because I assumed he was just another ytube amature like the rest of us.
About a year ago I watched one of his videos, and he mentioned a lot of do's and don't with aluminum casting, and I pretty much agreed with all of them.
I was able to track down his email address, and it turns out he was the metalurgist for a commercial foundry, and he really knows how to make superb castings. He can also mass produce superb castings, such as the aluminum auto carburetor bodies he makes, and each is flawless.
One of the things that surpised me was his use of a pouring basin, but after I watched his video, I realized why it worked so well.
His pouring basin is very small, and he basically fills it almost instantly, along with the spure.
He keeps the lip of the ladle very close to the top of the mold, to avoid adding velocity to the metal, and to keep from breaking up the pouring stream (you want to maintain a laminar or smooth unbroken flow).
I don't use a pouring basin, but I often use a metal ring at the top of the sprue, and so basically I am doing exactly the same thing as olfoundryman, ie: filling the sprue almost instantly.
The basin he uses, or the ring of metal I use, basically gives a little more area to pour into, and prevents spilling if you don't pour exactly down the sprue.
I think olfoundryman is by far the best aluminum ytube caster, but he comes from a commercial foundry background, and is not an amatuer.
I make the habit of comparing notes between every source of foundry information I can find, and he is an important source for me as far as casting aluminum.
I had not paid much attention until recently to olfoundryman's videos because I assumed he was just another ytube amature like the rest of us.
About a year ago I watched one of his videos, and he mentioned a lot of do's and don't with aluminum casting, and I pretty much agreed with all of them.
I was able to track down his email address, and it turns out he was the metalurgist for a commercial foundry, and he really knows how to make superb castings. He can also mass produce superb castings, such as the aluminum auto carburetor bodies he makes, and each is flawless.
One of the things that surpised me was his use of a pouring basin, but after I watched his video, I realized why it worked so well.
His pouring basin is very small, and he basically fills it almost instantly, along with the spure.
He keeps the lip of the ladle very close to the top of the mold, to avoid adding velocity to the metal, and to keep from breaking up the pouring stream (you want to maintain a laminar or smooth unbroken flow).
I don't use a pouring basin, but I often use a metal ring at the top of the sprue, and so basically I am doing exactly the same thing as olfoundryman, ie: filling the sprue almost instantly.
The basin he uses, or the ring of metal I use, basically gives a little more area to pour into, and prevents spilling if you don't pour exactly down the sprue.
I think olfoundryman is by far the best aluminum ytube caster, but he comes from a commercial foundry background, and is not an amatuer.