Metal Casting at Home Part 26 How to make Greensand
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- เผยแพร่เมื่อ 25 มิ.ย. 2024
- I get a lot of questions about the sand I use. Here is my first attempt at making my own greensand. The results are very good. It was a lot of work mixing by hand so the next project could well be an electric muller. More details can be found at myfordboy.blogspot.com
Watch in 1080p - แนวปฏิบัติและการใช้ชีวิต
This is really impressive. No matter how often I see casting done, I am always happy to watch more.
Absolutely love your videos. Straight forward no crappy music, great camera angles and simple script describing the process. A big thank you from Australia
Perfect demonstration.
Last time I did this was 46 years ago. Memories flooding back. Thank you.
guy comes from the country with the coolest accent when speaking english and he makes a whole long video without saying a word.
Thank you for taking the time and documenting your Blacksmithing, it's very much appreciated
The darker sand you have seen me use is a commercial one not home made.
The orange coloured sand in my later videos is a natural clay bound sand.
The colour of the home made stuff just depends on the colour of the sand used
Absolutely loved watching the whole casting series
The darker sand you have seen me use is a commercial one not home made.
The orange coloured sand in my later videos is a natural clay bound sand.
The colour of the home made stuff just depends on the colour of the sand used.
I work in a steel foundry where we make green sand and no bake sand molds much bigger. To prevent minute defects in your casting sift a layer of sand over your pattern to get a more fine sand , it will result in a higher quality casting
That is what I was going to say
I've seen him do it in other videos
You will not get a smooth as cast finish with that sand you need a facing sand
Hello there. Can I cast stainless steel parts with this mixture of play sand??
2:10 seems casting sand is without water just oil that stands high temperatures
The darker sand I use is a commecial foundry sand. The colour of this home made stuff depends on the colour of sand used.
@Shannariano The sand I have and made is water bonded so its either a natural clay bearing sand or sand with clay added. Greensand is water bonded. Oil bonded is an alternative.
@dramey03 This is the first time I have used home made stuff but the results were pretty. good. Maybe a slightly coarser finish than the commersial sand. Down side is its hard work mixing by hand.
The sand I am using now is the red colour sand. This comes from artisanfoundry.co.uk
Are you getting a rough finish on the mould or is the mould smooth but finished casting rough?
I have seen a lot of professional videos, but your video, sir, showed me more than all of them together. Well done!
Thank you very much for the vídeos! I use them in my lessons.
Greatings from Valencia, Spain.
@joycicles I used 12 % bentonite. More details at myfordboy.blogspot.com
@TheT2eL The sand I usual use is not Petrobond just a commercial greensand. home I broke down the sand after use ,charred bits and all looks fine. I think just the colour will darken after a few casts.
Please go to myfordboy.blogspot.com and look at the TIPS and FAQ page.
There is a list of recommended books
I have details at myfordboy.blogspot.com
@svenp More details at myfordboy.blogspot.com
Very good video. I highly recommend this one for anyone wishing to learn the sand casting process.
Your videos are great, with what I learnt from you I produced my first and successful casting yesterday.
Thank you for a clear and well done lesson. I never knew how casting was done.
Thanks for your videos. They are very beautiful, well made, interesting and very instructive!
Always wonderful clear and instructive videos , ty
Love the video, love the background sound...it's so relaxing.
another brilliant video. fascinating and relaxing to watch. love the ambient sounds. all very zen
I am really enjoying your videos, thank you very much!
Forming the ingate is an art; many of my attempts result in poorly filled areas, particularly where the part is thin, or contains fine details. These videos are excellent guides for sorting this all out. Thanks!
I really like that you take the time so I can learn a thing or 2 about lead smelting T-Y
Love your videos. A good source for bentonite is natural bentonite cat litter, it's nearly 100% bentonite. I'm using an old espresso grinder to grind it into a fine powder before mixing it together with sand.
It's been over 30 years since I taught foundry practice in high school and you did a great job, especially with the sand mix. Clarify your clay type though. Over all...you comunicated well. Thank you for the reintroduction to a past love.
Very Educat9ional , and well presented !
@bladder1010 The air escapes through the porous sand. if it were a larger casting I would have added a riser at the oposite side to the feeder.
hi from mark thank you for sharing your casting experience --- i appreciate it
@Shandybrother There is a link at myfordboy.blogspot.com for a UK supplier.
It feeds the casting with metal as it cools and gives pressure to fill the mould.
Thank you for your response - good info - sounds like a lot, but we get out what we put in.
great people do great things. thanks elliott
I enjoyed this video and found it helpful, thank you.
The extended feeder gives the metal "head". As the metal cools it shrinks and the risers feed the casting. The extension is more important with aluminium than other metals.
It's to give a bit of pressure and to feed the mould as the metal shrinks as it cools.Also its easier to pour into.
The plastic blocks are known as modesty blocks. If you go to myfordboy.blogspot.com there is a page all about making the flasks.
5 things will help.
add zircon flour to your sand mix, it will take the roughness out of the definition, the other this is dust you molds first this will help with release and definition
cut a slag trap in your feeder gate.
add a riser this will help to pressure the casting from two sides, it will also feed it when cooling
if you want super fine then use a zircon spray coating for your mold, you should be able to achieve close to mirror finish
Great work!
Hello there. Can I cast stainless steel parts with this mixture of play sand??
@@umbeatable2770 yes
Hello there lathe machinist over here can i melt and cast carbon steelcand stainless steel in a propane melter ( melt and pour into a mold ) ty
@@marcwire9332 wow lol u responded after 6 years
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Very good video for sand casting process.
@myfordboy thanks i think i might have a go at casting soon
What can we use to polish these up? metal file?
Sand blaster
I usualy use a commercial sand. I made up this batch just to see how it worked out. Most people would mix dry and add the water later but I found it easier to do it this way. Its not sufficient to just mix it in a concrete mixer it needs to bepushed together. Adding a steel ball to mixer might work.
I really like video bcoz you explained in detail from A to Z
I later used losalt as I feel it gave a better result but I now have some aluminium drossing flux.
I haven't noticed the castings are particularly brittle but maybe softer than the doner metal.
Are you sure its mixed enough, even colour, no sign of the clay?
GREAT VIDEO!
A very good how to video---- thank you
Best channel ever
THANK YOU. Making casting sand is as easy as a cup of TEA.
Nice. Someday I'll try it.
How to make hard work look easy! great video thanks
@Dancerpro1 Its best to feed each one seperatly.
Lost wax casting is one option but you can get great detail with Petrobond sand.You would need a proper crucible for the silver.
If you go to a masonry supply place they will have bags of 120u sand for about 14 bucks/100lbs. Makes for very nice casting sand. Not too fine, not too course. It wont leave grain texture in your casting. Pottery houses sell the powdered bentonite for 2 bucks a pound. {8-10lbs per 100lbs and bag}. Way easier than sifting play sand! and it comes dry :) play sand is usually wet which is why the bags are so small {water is heavy, its packed by weight}
Sir, thank you for your response. I asked my question one video too soon since the newspaper trick was demonstrated in #27. thanks again
I think that graduating to a work bench is about time.
Yes I have some. It give a great finish but its more expensive and you loose a little each time as it bakes where it touches the metal.
How I wish I had a country like urs were every thing is kept for people who wanna be succesful well u did a great job there
@OutDoorsMan1342 Yes it can be used over and over.
@stirlinguvstroj This is most people do it but I didn't find it mixed very well that way.
Yes thats what I use.
My fordby i was watching a program where in the olden days they would mix only molasses and sand interesting..Passed down through generation in some 3rd world country..Always look forward to you months.
love the videos, thanks for posting.
Avery interesting and very useful
Another awesome video, thanks.
You can get material to rejuvinuate the sand. I haven't noticed any change in my commesial sand after years of use.
@StrongBlair The same sand is good for brass.
you my friend are a man of many words...
Love your videos! Thanks!!
Have a look at video 29 and 33 in this series.
So peaceful.
It gives a head of metal to feed the mould as it cools.
Do you mean "what are the castings for ?" They are for model engines. They can be seen at my Model engine videos playlist, on my channel page. I still have all the engines show in my collection.
@ecksjay89 It came from a different place in the country. Some natural sand could be red or brown.
@OutDoorsMan1342 Yes over and over.
this a beautiful job.
After looking into it, it's "Sodium Bentonite Ash Clay" that you want, and the sand that I see seems to work best with the mulling (and resolution of cast) is the tamping sand you find at Home Depot or Ace that will work best. I noticed when I got my Play Sand, that it looked too sharp in comparison to myfordboy's sand pick. having more powdered look was the easier choice. I intend to Ball-Mill all of my stuff, including my sand first to get it a little finer.
Thank you for inspiring me Ford!
Dear mr good job..but i have a small suggestion.intead of using small knife for creating ingate(way) you can use some other shapes to do the same some thing like 5mm pipe before creating mold..
@marcuslb95 Worth a try I suppose. They use clay and dung in India to make bells.
Dude! You ROCK!!!!
Hi. I found elsewhere a very similar recipe. There they recommended blasting sand (finer than playground sand) and also said that cat litter (the stuff you fill cats' boxes with) is typically 100% betonite. So if someone cannot find betonite, cat litter might be worth giving a shot. Haven't tried that, though, so that is just a second-hand knowledge. Thanks for your videos, David.
Great video, keep it up please!
You need bentonite clay. I don't know what type of clay is used for ceramics.
myfordboy's greensand ratio, Metric to Imperial:
1kg = 2.21# (sand) to
120g = 0.27# (bentonite)
I recommend watching the entire video though....now you just don't have to convert it
@Shannariano Greensand is water bonded. Its a natural clay bearing sand or sand with added clay. If oil is used instead of water it is Oil bonded like Petrobond which is technicaly not greensand.
so satisfying.....
Thank you sir I made it right I think it’s just a fine line between too wet and too dry but thanks forgetting back so quick👍
You need something smaller and more controllable than a mallet to ram the sand tight against the pattern.
you make this look easy, I've been trying to get a good mold for weeks it either doesn't part off the piece clean, or mold doesn't part clean. Poured one yesterday, mold looked good, still didn't part like yours but thought it would work. Then when I poured it blew out the side. So here I go again. I do however find your work inspiring so will keep watching till I get it right... Thank you for your video's, they've been very helpful....
+Bill Richardson It could be your moisture content is wrong or the bentinite % if you have made your own sand. It takes a bit of practice to get it right
Thank you, I read where 10% clay to sand mix was what you want but that didn't work at all, so I went to adding more clay. Seems to be a lot better I am at about 18% now, most likely pushing the limits. Your videos are so helpful, trying to watch all of them, guess that makes me a fan.... Thanks very much for the reply....
Rely nice video !! keep it up
Thank you Sir!
A riser is not needed for small castings like this. You can add vents if you wish but the porosity of the sand will expel the air.
Thank you so much!