Metal Casting Play Sand - TKOR Shows You How To Make Green Sand, Sand Casting And More!

Let’s make special sand for casting metal! If you want to try something new and creative or just a simple weekend project such as: metal casting sand, how to make sand to cast metal, how to strain sand for metal casting, making greensand for molten metal, using sand to make molds, or sand casting aluminum...watch the video to learn more.

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Music by: Can't Stop Won't Stop - "Bring The Funk"

WARNING:

This video is only for entertainment purposes. If you rely on the information portrayed in this video, you assume the responsibility for the results. Have fun, but always think ahead, and remember that every project you try is at YOUR OWN RISK.
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[kaball]

I'm still coming here for tips and help with projects I do because TKOR really did inspire many

[MyHeap]

Grant, a typical mix for green sand is 93-94% sand and 6-7% bentonite clay. You will want to do a couple of things. After mixing your dry components together slowly add water until the sand is moist but not sticking badly to your hands. Let this sit a while to actually hydrate the clay. The next step is to mull the sand. To mull you want a squishing sliding motion. The idea is to coat the sand with the clay you have mixed in. To test the green sand, take a handful and squeeze it into a sausage. It shouldn't stick to your hands much. Then break the sausage in half. It should break clean and not crumble. If it crumbles then you do not have enough water in it. If the sand sticks to your hand and the sausage does not break cleanly then you need more clay. Keep in mind you only want enough clay to coat the sand. Any more, may give you slightly more green strength, but you lose porosity which will affect your casting. I hope you find that helpful.

Joe

[lon-zfwb]

You have to mix your Potassium Nitrate with Magnesium Powder in 50/50 and light this. It is Flash Powder and better than Blackpowder. Try some experiments with this.

Pls like that he sees it :)

[treyfreeman]

I like how you not only talk about alternative methods, but also *do* them so we can get an idea of the process.

[recommit]

The sand I have used for years is graded washed quarry sand. The powdered bentonite is ready to use from clay pottery supply shops and I use a mini mix cement mixer to do all the mixing. Dry mix sand & bentonite first then add water till it holds. Try not to use too much water or you will have steam pockets blowing through the casting. Degassing tablets & flux really make a final quality difference. Make sure you vent the sand mould thoroughly to allow the steam out.

[Velocity_AU]

YESSSS MORE CASTING! I love watching you cast stuff!

[belals]

Grant Thompson: I don't want to use the big sifter
Uses big sifter

[interspace]

Anybody else say "Oooooh don't breath this" when he opens the blender jar? 🤣

[aboodybuz]

if you put water in a vacuum chamber then freeze it will you have crystal clear ice?

[simpleman]

Some things that I would like to add. Green sand is only used for 'soft' metals like aluminum. It will not work with casting steel. You need oil sand for that. Also, when storing it, it doesn't hurt to mist a little more water on top. Especially if you live in a hot and dry area

[patrickb]

Another option is to use a ball mill to crush the granular materials down to almost whatever size is required. The draw back is that it is noisy and takes a long time to crush the materials down the the grade needed, but the plus side is this would allow you to use more of the granular materials purchased as well as allowing you to create a finer powder then you could get from sifting. From here you could test just how fine a powder could be used for metal casting purposes or other experiments. This is my first comment so I gotta add that I love the content your posting. Thanks for keeping experimentation fun and accessible. :)

[iac]

At 1:45, I did the same thing years ago to cement mix. All I needed was the "morter powder" not all the pebbles. So I bought a sieve, sat down, and sieved enough mix to get the required amount of mortar. And the sieve is jow used in the kitchen !

[B_assMan.Archive]

These videos educate me more than my high school teacher does. XD

[darya]

Pool filter sand is much cheaper that aquarium sand and can be just as fine.

[surendersankhyan]

I like your videos because they are really educational and for posting these kinds of

[Karatekidhero]

Thank you! Me and my friends have made the foundry and this is the last step we need to cast :D

[joeblowjohnny]

! A VERY WELL THOROUGH VIDEO ON YOUTUBE ! I LOVE IT ! THANK YOU !

[darshanmathukiya]

can you make glass in the new foundry you made??

[haswijnen]

i just watch these videos without actually making or doing anything

[abdulmueed]

Hey Grant, you should've just automized the sifting process by connecting the big and small mesh using paper (like a funnel), then you can connect this system to a vibrator and voila: automatic sand sifting machine. All you need to do is keep adding the sand to the top part of the funnel with the larger mesh and get the fine grain on the other end. Cheers!