Metal Casting at Home Part 131. Brass Casting with the Vevor Propane Furnace.
Вставка
- Опубліковано 16 вер 2024
- An inexpensive furnace to get you started in metalcasting.
Vevor 6Kg propane furnace.
Code: VVMH5%OFF (5% off on all sites)
UK site: s.vevor.com/bf...
US site: s.vevor.com/bf...
AU site: s.vevor.com/bf...
CA site: s.vevor.com/bf...
FR site: s.vevor.com/bf...
I don't know how long "Vevor" has on the market as some, start off overseas then move into the U.S. market and others. Some item are decent while other kits contain under sized or lightweight components. This does not have a blower fan or adaptor to add one. I agree the tongs are mild steel looking and better one needed. But out buddy "Our Ford Boy" comes thru again. Excellent job of walking us thru the parts, steps and creating. Thank you!
Vevor supposedly has incredibly good welders for their price point (being less than half the cost of some of the competition) so I'm guessing they'll remain on the market for a long time or get a deal with harbor freight and jump up in price to match most of their other over seas brands
@@i401bluesteel7 Yes Brand welders are gaining capability and popularity and worth looking at for a TIG. I got my MIG in 1984, so I don't need another true 150amp commercial welder with large spool. And TIG, you buy according to what you would weld in thickness. I believe it is 1 amp per 0.001" of aluminum. Wish I knew or owned one. I have exhaust in SS to weld. $1,600 goes to Dr in April so I can walk. Last chance.
This furnace kit is specifically for use with a propane burner. You don't need a blower for propane furnaces only for diesel or other oil/solid fuel type furnaces.
@@howardosborne8647 Just an observation as the metal I melt is with my torch.
ASE Master Tech since 78
Just started watching your channel for the copper boilers and steam engine tutorials from years and years ago but almost everything you post is so interesting and stuff I want to learn!
On the 2nd pour you really see the metal of the riser shrinking and feeding the casting
If YT, and vidz like this, had existed, when I was a kid 100 yearsago, I had probably owned the fastest moped in the area (OK - I had, but with standard tuning parts, and trial and error - I reeeaaally didn't have a clue, but just kept on trying something new) and been selling custom parts to the other "moped thugs".. :D
I might have to have a look into this kit 😊
Thanks for the video and i'll use your code. Long time watcher of your channel and humble model engineer from Australia
You sure can drive that Hacksaw, Impressive, many would struggle to keep up I'd say.
Nice furnace for the price, don't know why it's called as "smelting" furnace though, it's a melting furnace, smelting is producing metals from the ore .the tongs are not good gripping the side of the crucible, I use lift out tongs & a pouring ring in my furnaces,simple & easy to use.
Looks like a very serviceable and affordable furnace, shame about the tongs though! I do like the MK2 Myfordboy tongs 👍👍👍
The brass casts look as though they had a good surface, no bubbles or pits. Nicely done. I recently posted a comment on one of the model engine forums about a caster who invited me to watch a pour of cast iron. He used broken glass to act as a "magnet" to collect the iron slag. One commenter said that he used glass with his brass melting to help keep the zinc in the molten metal. Any thoughts?
I've used glass on brass to stop the zinc being burnt/oxidised off, you can take of like the slag just before pour or hold it back and pour beneath it. For me it works well.
not sure about glass being useful to keep the zinc in the alloy but any means of reducing the oxidation exposure will certainly keep the zinc burn off to a minimum.
Does the glass just float on top?
@@markrainford1219 When I watched the cast iron pour I had to stand well back, so I didn't see what happened to the glass. I didn't know that some had used it on brass.
@@markrainford1219
Yes.
Density in g/cm^3
Glass 2.5
Brass 8.7
Iron 7.8
Glass is much lighter then either of the other 2. It will float.
Very interesting demo,Myford Boy 👌
The interesting thing about this full furnace kit is even if you set out to buy the components individually and make your own it would not be any cheaper than simply buying this kit of components.....The tongs they supply are quite useless as they are so maybe modify them into a proper set that grip around the outside of the crucible.
I would not trust any crucible tongs that you had to apply pressure to to gip it.
My crucible tool shown here locks onto the crucible and you can concentrate pouring. A crucible full of moulten brass is quite heavy.
I have been watching for some years and always though t you were in the USA. but today i heard a robin in the background and guessed you must be in the UK or Europe.
UK.
Sir great video thankyou. My wife ordered one of these as a Christmas gift but she passed away in September and I couldn't look at it. We missed our 50th anniversary by 2 weeks. Last week I dug it out and looked at the box and pushed it into the dinning room. I promised her some jewelry. After watching your video I'm going to assemble the furnace and vacuum cast a few peace's. I built my vacuum table to degas the investment plaster. I have a DIY centrifugal caster but I don't think I can pour fast enough to spin a casting. Do you have any ideas on a DIY cope and drag? God bless.
Sorry to hear of your loss. It must be very hard for you after so long together.
Flasks:
ua-cam.com/video/wKHGRL4P4JQ/v-deo.html
ua-cam.com/video/Nk3tEEFEukc/v-deo.html
I am actualy just making some small ones using laser cut plywood.
@@myfordboy Sorry to rattle on. The video just got me thinking. Thank you. God bless.
Ive found that sodium silicate cores can be washed out of the casting with nothing but a garden hose.
Those supplied tongs are woefully unsuitable for lifting and pouring crucibles. Lifting out of the forge vertically is nigh-on impossible, not only because of the awkwardness involved, but also the danger of having to be above a high temperature heat source when lifting. Pouring into a mould using them would also prove problematic due to the restrictive vertical plain of operation. Lifting from the bottom of the crucible from a perpendicular position is essential and also facilities the ability to pour into a mould with ease.
Have more than just a passing interest in casting small (2") watch cases out of brass so my eyes were glued to your video. I caught the note about no refractory on the bottom, but twice the coating on the sides. Were you referring to One coat, but twice as much material in the application, or in applying Two coats with a drying period in-between? Thoughts?
I recommend not appling refractory to the base but use all the supplied material to coat the sides using two coats if necessary.
Usually you put a vent in when casting Aluminium. I didn’t see one here. Why is this so?
I can get away without on small parts
Excellent!
Interesting to see the build of a furnace. Would you recommend using one of these for a novice or an electric example? I ask as I am mulling over to propose for our restoration group, encouraging or recruiting a person interested in metal working, to produce small cast parts.
I think this furnace is excellent value. If you bought the materials to build one it would cost more. Crucible is included in the kit.
Elecrtric furnace is great for very small parts but it has limited capacity and eventualy the element could fail as i showed in a previous video.
@@myfordboy Many thanks for swift response - I am attending a Hull and Barnsley Railway preservation group committee meeting today hence will be able to set the debate in motion - we have a number of brass parts required as a restoration project moves forward!
Two for the price of one, thank you.
Wonderful casting video, as always. May I ask why not place the feeder tube on top of the part? This part has a flat top - ideal for facing on the lathe later...
When I was taught to cast bronze - art school, but a very competent german adult - a true pleasure (tak Thomas Ziecklebein) - we made the forms, sothe bronze was poured into a funnel, went down below the mold cavity, to avoid air being trapped by bronze coming from above it. With him, nobody ever had a bad casting. With the next "teacher" ("educated artist" just before getting hired) that was sooo smart, that she didn't listen to my knowledge, nobody had a succesfull casting. I was sooo pizzed - not so much on my behalf, but for those in the class, who never would get a new chance of casting bronze. After her fook upery I had the full respect of the class, and her, but what a shame for the others..
@@CONEHEADDK Very cool story - I'm all for learnign new experience... do you still cast metal these days?
@@Smallathe Thanks. I suggest you take a look at RAPID DIRECT casting - they show 11 different types of casting. The way we did it, was close to what they call gravity die casting, but with the mold/form made from plaster of paris, chamotte and some other things, as I recall it. I don't really get to cast much - as John Lennon said: "Life is what happens..." so I've never got around to any more bronze. I have cast a bit of glass and more silver, but life has really fooked with me, so I'm still "trying to get started at life" - as 60+ years old, and held back by discus prolapse and "the worlds best health system" - where every other doctor I end up with won't give me the pain killers, that I NEED - and that I've never had problems with taking to many of or anything - Denmark has sooo many "mommy state-issues" - controlling us in far to any ways. Onlt tool of self defense legal here, is calling the cops.. Not even your 100 yo granny can own a pepper spray in here own home 30 miles from the cops. If intrs you can see a bit of my silver on Børge ODK - my fb-artist site. It reeeeaally needs to be updated, but I'm beind on cash, so I won't spend 3-700 bucks on a phone, so I can't take any new pics. And once your life is screwed, - as The Doors sang in "Strange" - "nobody" seems to "have the time" to find you one of those millions of discared phones, that they dump, as soon as there is new one - that actually does nothing better for them.. Ha - I'm ranting.. Life zucks and then you die.. :D
It's not good practice to pour directly into the mould.
It could disturb the sand. The well at the bottom of feeder breaks the fall and can trap an impurities.
@@myfordboy I'm not advocating for top pouring, but have you ever tried to cover the mold, and force Co2 (or whatever you harder the cores with) into it, to give it a hard "shell"?
Great video, fascinating to witness the process! Can you tell me what the "core" is made from? And can you reuse the green sand after casting?
This video explains all I think ua-cam.com/video/l3opkzAvVQk/v-deo.html
Hi David
Quick question. What are you using for parting dust now? I remember at one time you used regular talcum powder. I find the casting people will only sell in large quantities.
Take care
Willy
I have some calcium carbonate parting powder that was given to me and am using that but regular talc, baby powder works just as well.
Thanks David
Nice sir
Genio
Great! Is there a core support on both side ore only bottom side?
The core just sits on the recess formed by the pattern and is not located at the top.
I am having a hard time visualizing the actual size of the melt. Is there any common item that will give me an idea how much a 6Kg furnace will do? Maybe a measuring cup or something else. The price of the 12 Kg isn't much more but I have nothing to judge by.
That's a good question. I have measured the volume of the crucible and it would hold 0.5 lt
of metal. By immersing your pattern in water and measuring the displacement you can see if it's big enough. You need to add extra for feeders and risers if needed.
@@myfordboy I have been following you for quite some time. Love your work. I am honored that you took the time to respond to what I was afraid was a silly question.
Is the baked bean tin a pouring aid or extra shrinkage capacity ?
It does aid pouring and gives head to the metal to increase the pressure and feed the mould as the the metal shrinks. In a prevous video I tried this part with the limited capacity of my electric furnace and the lack of height made a failed casting.
"Ceramic fibre is a wonderful insulator" Should have been followed by "Don't try this at home" (Blowtorch on ceramic in hand) 🤣
😀😀😀😀😀😀😀😀😀😀