Steam Engine Build: Cast Iron Cylinder Head Pour (Top and Bottom)
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- Опубліковано 4 лют 2017
- In this video, I do TWO cast iron pours at once! The top and bottom cylinder head for the engine. As you will see, one of them didn't quite go exactly as planned!
Man, I miss this channel.
I've left a pattern in before. It's a sinking feeling when the reality hits.
Lol for sure!
im assuming your casting skill has improved as this was posted last year. but when you have parts like that with tall sections to fill from the middle, you really need a small breather/riser at the top of the cavity so trapped gas can escape faster and the metal can fill quickly before it starts to skin.
I'm enjoying your channel and what you do, its very interesting, I know it probably took awhile to 100 subs, I just started my own youtube channel not to long ago. I definitely subscribed to show my support in growing youtubers! Keep making these great videos!
Thanks a lot!
I think you need to add fillets to the square inside corners, of the pattern, that would help with the voids that need to be filled, also I think it would be better to lay the pattern flat when molding a part like that. Keep up the good work
Thanks for the comment! I think I will do just that next time. I am sure it will turn out better. The problem with me is, I get so excited to cast and machine the part that often times I rush through making the pattern. Fillets are especially painful for me to make for some reason.
Good pour. I'm impressed that you are casting iron, not brass, or aluminium, which melt at lower temperatures. Thanks for sharing, would be interested on learning how you built your furnace.
I have a video explaining how it works, but I don't go into the details of how I built it. One of these days I am going to build a bigger one and I will bring you guys along the way for that one.
could you use a finer sand to get a more accurate cast?
Yup!
Don't those molds have to be level so there wouldn't be any air pocket I've never done it but in my mind that's the way it would work best
what size crucible is that you are using for this project?
I believe it is a B8
@11.59 you say, "it might be a little hairy" but, since you are working with fire, a more accurate statement would be, "I might be a little less hairy."
Matt, are you aware of the "Doubleboost" website? It's here:
ua-cam.com/users/doubleboostvideos
It's run by John Mills, who is a chap who is a motor mechanic by trade, but he is also a machinist and welder of great skill, and his "how I did this" videos are both informative and entertaining. There are lots of 'em, and there's usually a new one every Monday night. Despite the fact that he describes himself by saying "I'm just a mechanic who pisses about..." he is a very accomplished human being.
John also does a certain amount of metal casting, usually brass or bronze, sometimes aluminium. His setup for ramming moulds, in a tiny backyard shed, is a marvel of organisation and just plain good ideas, especially the way in which he manages, stores and restores his casting sand.
He also does his casting slightly differently from the way you do it, in that he puts his gates in the bottom half of the mould, so that cavities fill from the bottom up instead of the top down. I believe this decreases the chances of getting shrinkage and voids.
He also does a little more in the way of risers, those holes which allow the molten metal to rise up and fill the mould completely. I won't describe it because the man himself, and his videos, do a far better job than I can. It's *his* site and his work, after all.
From Google, here is a list of his sand casting videos.
Mate, please don't get me wrong. I am *not* trying to teach you anything. I don't know anyone else who does hobby casting of cast iron (although Keith Rucker plans to, apparently), and I greatly admire what you do. Hell, I don't do any casting at all. My only motive is to introduce you to a bloke who does what you do, and has some ideas you might find useful, is all.
That's what these youchoob videos are for, aren't they?
It seems to me that round parts are better off lying down in the flask rather than standing on edge. Then you wouldn't have to worry about the roundness of the part if you get a bit too little molten metal in there and you wouldn't need to make a split pattern.
I know you like the surface that you get from coarse sand, but don't you think sifted sand will hold up better at the edges?
Yup, you are 100% correct on all accounts. I really should have made this part sit flat in the flask. Then I wouldn't have had to make a new flask to accommodate the part standing on edge. Don't know why I didn't do that!
But it isn't necessarily the surface texture of COURSE sand that I like, but just the sand texture in general. You will always get SOME kind of sand casting texture, not matter how sifted and fine the sand is, and that is what I like. I am just lazy and never like to spend time sifting and tilling the sand. But as a consequence, sometimes I get breakout around the edges (but not all the time)
Do you have a muller for your sand? Easy one to build www.backyardmetalcasting.com/guest_georgemuller01.html
This looks great! I bookmarked the site. I will try making this in the future.
Mate, have you got a dollar number for what it costs in propane gas to melt, say, five pounds of cast iron? I would be interested to know.
I would also like to know how much you pay for your gas per cubic foot or gallon or whatever. Prices in your country aren't the same as prices in mine (Australia).
Lastly, do you have a name? Or are you happy for me to keep calling you "Mate"?
My furnace uses waste oil as a fuel source, so the fuel is free! I get it from changing oil on my cars and people on craigslist who want to give their oil away.
Lol yes my name is Matt. I should really start saying that in the beginning of my videos!
Hey I am trying to reply to your comment on my other video and am having issues. UA-cam flagged your comment as spam because there was a link in it, and it will not let me approve it as not spam for some reason. I will check that guy out! Always looking to learn more!
:)
i'm no expert though maybe if you slow down a bit, you might have better results.