Simple Lost Wax Casting - High School metal shop with "minimal" tools
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- เผยแพร่เมื่อ 1 ก.ย. 2013
- Update: I plan on making a new video this year to show the progression of our work. Better success rate and better looking final products. Coming soon!
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We used merlin gold (fake gold) during this cast so don't freak out at the wasted gold you see!
This is by no means a professional demo of how to do this. There are plenty of other videos out there showing that. This is not something I specialize in but just do it for fun. A lot of material is wasted during this process since I do this with teenagers and old equipment but they have fun learning and trying out new stuff.
I made this video for kids that needed a quick reminder or missed the demo that day in the shop.
If they taught us this type of stuff in school I would've payed attention
Stg
Its great to see HS kids learning metalwork. My old HS scrapped their manual arts programming years ago. I visited the school last year and the metal and wood shops had been converted into glorified junk storage rooms - tragedy. Possible class project - make a vacuum chamber to pull the air out of the investment material (for cleaner castings) - cheap vacuum pump and a bell jar or some PVC pipe/fittings. Fun and instructional.
A vacuum chamber has been on my wish list!!
Sanyam
Updated video with a 3D printed model. Better results than this OLD video
th-cam.com/video/a0Ond_9SaH4/w-d-xo.html
Your video helped me more than any other one I watched, including ones by more 'professional' jewelers! THANK YOU!!!
I keep it simple because I don't have access to other tools. It might be a little sloppy but it works!
Finally!! A video that shows this whole process thank you
So cool to see this again. It was nearly identical to what I did in high school 20+yrs ago. Such a fun process.
This looks like an excellent program. Great work you are doing!
I paint my waxes with investment before filling the flask, it stops bubbles sticking to the wax, works really well. I bought one of those cheap dental centrifuges and built my own cage around it, with a lid. That centrifuge he's using here costs a fortune.
I’ve been casting for a long time . I don’t have a vulcanizar for molds I use two aluminum metal plates and screws . To burn the wax I use a regular propane torch and burn the crucible for like 10 minutes until I don’t see no more wax residue in the cavity of the crucible and it becomes lighter when it has already lost all the water in the investment .
Good tip!
Hello, I want to start with jewelry but the ovens are too expensive, has your technique worked well for you or are there wax residues left? Thx
Very good video Mr Holbrook ... excellent technique and thorough steps ... easy to follow ... well done!
Revolution work in jewelry section.. good job
I thought I was the sticky guy....my hat is off to u Sir, shine on you brilliant soul
I like how you explained everything
I did my best. This was a few years ago and I have changed up my process after learning from mistakes and finding improved ways to create things!
Awesome tutorial. This is the best online video I have seen in my week of searching for good lost wax videos. Keep up the good work.
Please do a video on making a pendant, a simple round one with an etching of a name , or a name plate.
Thanks for watching! I may not be able to produce a video for awhile as I have switched schools and may not be able to go in and work/teach for awhile
I use a vibrating flat lap ( for polishing agates and other flat surfaces by vibrating)
Instead of spin caster also for pouring the investment powder.
Works really good
Yes a vibration surface a vacuum pump would be great to have
This is my first time watching lost Wax casting by Centrifugal method.I am familiar with this both lost was and Centrifugal casting,but this forced me to rethink about my knowledge.Great videos indeed.I am an Amateur in Melting metals..I casted Not more than dozen times.Eventully failed due to lack of Equipments...Hope I try Some more in near future.
Good luck! This is a very old video from when I was still learning the process so the quality of my casts did not turn out great. I've much improved now even with simple equipment. Thanks for watching!
Thanks man, this helped me out a lot in dental school
Ha. I guess the process is similar! Just don't put THIS investment powder into your body!
@@WeBuildStuff what kind of investment powder did you use? Gypsum bonded? That's what we use to make gold crowns
@@theking1233456 specific jewelry investment. I would like to find a cheaper alternative. They need to be able to handle high heat from our kiln without cracking
My high school had a great metal shop. Most of us were machinist votech tracks. A new art teacher started giving jewelry classes in our shop, a lot of us made rings like this.
Awesome. Mine have improved a lot since this video. I am primarily a fabricator/machinist teacher but the lost wax is fun
That was a really cool video!
Thanks! I
This was an optional class I took in high school, I also took photography.
thank you. it's very useful video for me. by the way can we use gypsum instead investment powder?
If it is Gypsum powder specifically for casting then yes. Check with your supplier first though. Don't assume drywall powder will work!
Here is a PDF that talks about using Gypsum based powder
lapidaryworld.com/pdf/castinginfo.pdf
So divine!
How much would you charge me to do a lost wax cast of a small trinket if i was to send it to you made out of the wax product of your choice? It would not need to be perfect. In fact some air bubles and imperfections would be what I would prefer.
Вот это мастер класс)) формовочная масса отверткой размешивается, с комками, без вибрации, без вакуума. Вообще не размешана фактически. Льется все как есть)))
Ага и все изделие в шарах))
So what all do I need to present to the caster ? Just the wax ?
If you just pour the molten metal in empty mold without this spinning machine, will the final product differ?
@IyaEarthseeds Great reply!
Damn Mr. Holbrook you're still the maaaaaaaaaan
Thanks for the video. I like to now how long this you leaf te mol into te oven?
Once it reaches the higher temperature seen in the video I usually leave it there fpr at least 1 hour to make sure all the wax has burned out. For larger molds I will do 2-3 hours.
After that I turn the temperature down and once it has 'cooled' to 900 I do my spin cast.
There are better rules to follow than mine but usually due to classroom time constraints this is what has worked for us.
I wish my school had a shop my metal working is limited to a lathe that cant hold 10thou and a drilling machine of questionable quality.
I think I will try lost wax casting for cylinders on my model steam locomotives if a suitable piece of brass or phosphor bronze is not obtainable.
You don't need a spin caster or kiln if you have an oven or some other way to completely melt out your wax. If you add two spru pieces use one as your pouring hold and the other as a vent. Use some sort of crucible (easy to find on amazon) and a portable torch you can pour directly into your mold similar to sand casting. Lots of ways to create even if you don't have all the tools
@@WeBuildStuff thanks that's what I was thinking about doing if where to make use of this method. Also the lathe and Drill are of perfectly adequate quality it's just err... operator error.
What is that white powder? 😮😮 a mixture of which powders bro
Is the spin cast machine required? What of you poor your alloy straight into the flask after the flask comes out the kilm would this method work?? Please let me know thanks
If you do this I would recommend two sprues. One for the material to pour into and one as an exhaust to vent trapped air or bubbles. Search for sand casting videos and you will usually see a pour hole and exhaust hole. I have done it with sand casting but I have not tried it with the lost wax method
And check out my newer video of doing it with a 3d printed PLA mold and some new tricks I've learned!
@@WeBuildStuff okay I will and great you earned a new sub from me. So you would recommend that I purchase a spin cast machine for the alloy to transfer to the flask or should I get the vaccum - cast machine. Which would you recommend?
@@jamileholmes3650 I've never used the vacuum cast style before
Read reviews for both and go with your budget! It is actually possible to build your own spin caster from a rumor I heard back in college. I never persued finding plans though
@@WeBuildStuff thanks for your help 💪💪
You could initially dip your wax in very thin plaster then let it dry so that it will give a nice smooth coating before sticking it inside the thicker heavier plaster.
yes. I also use a debubbler spray now to coat the mold prior to pouring :)
That’s how I do mine coat it first make sure no bubbles works best
I was wondering about the investment. I saw before people dipping the models into a plaster then they sprinkle sand straight after. This way they slowly build up thickness. The two methods aren't anyway similar, are they? I mean, are the two investments completely different? You way is quicker. If time isn't an issue which process would you say is better for someone doing this at home as a hobby? Thanks. I like this type of work. :D
I've only ever done this with students in a classroom setting so it is difficult to speak to the other method. The way you have described it does makes sense though!
Ruger Firearms company uses the lost wax casting method to mske some of their gun parts. The wax model would be dipped into a sand-like slurry and gradually built up and dried. The wax would be burned out and the molten metal poured in. After the metal solidify the investment would be busted off. The metal part would go to final finishing and inspection.
I wish my metals shop was that chill, my class was filled with a whole bunch of numb skulls lol
This was also filmed during a lunch hour so there were less students in the room 😉 normally my room is louder with 20+ students working all around the shop
What is the ratio powdrr and water ? Help me some 1. Is 60% water and 100% powder for exanple :60 g water 100 g powder ?
I'm sure there is a proper ratio but we eyeball it based on the model complexity. Same as making pancakes from scratch.
sir really great idea nice ...but how much time it took burnout in the oven ?
9:50 in the video
sir it says at least let it sit one hour before putting in the oven .....but my question is how much time flask was inside the oven for burnout ?
@@chandandhar6897 i usually leave at 1200 for at least 30-60 minutes for most wax burnouts. Longer for large molds
sir now i understand this flask size is 2 and half inch and burnout process was 30 to 60 minutes after you put metal in the flask ...so now i understand thank you very much sir
We use wax shouldering machin.
Hi Holbrook, did you cast those rings in gold? If so, where do you order your gold from? I'm new in this area so looking for a good metal resource. Thanks for the great video!
It says its "merlin gold" sir.
Thanks man
Adam Smith You're welcome.
I get most of my stuff from "Western Gem & Mineral Supplies" in Surrey
plus.google.com/110880926271153048616/about?gl=ca&hl=en
They are local so I don't need to buy online
Good to see another “Holbrook” caster
Good
where does the wax go when burnt? like are there any fumes to be cautious of?
always work in a well ventilated area any time you are burning stuff for casting regardless if it is wax, pla, organic material. I do find the wax does stink a bit. It basically melts out and vaporizes. I still try and clean the bottom of my oven when it needs it
The sticky wax that I use doesnt seem to be able to hold any weight after I melt it, where do you have any info on the wax to use?
I use the sticky wax as a temporary way to attach the sprue to the model. I then suggest to use some additional melted wax (blue or green strong stuff) to reinforce. I am by no means an expert since I dont practice much but I can usually get good results for students when they make their own models from wax blanks
Good Luck
Super 😎 Cool 👏👏👏❤️
You have three problems that you should avoid. Problem one on your rubber sprue base clean off all the investment plaster then use a tiny bit of Vaseline and coat the base each time you go to use it, keeps your sprue base clean. One tiny flake of dried investment can destroy a wax pattern! Problem two is the flask is full of dried investment, always clean them with a scraping knife. They make a non flame pad you can wrap around the inside of flask before you mix your investment. Problem Three your investment powder is and exact science there are mixing formulas and water temperature for each type of investment you use. There's only a few minutes to mix de-bubble and set, anything to short or to long can and many times prove fatal to your wax mounting. RHJ GOLD MFG
We've changed up a lot of things in the class since uploading this 5 years ago. thanks for the tips
I do not know nearly as much as RHJ here. I used to work with a friend who was a professional gold smith. The investment you make in this film scares me. We used to be very careful to make it as perfect as we could. No lumps AT ALL. Makes a huge difference in the final cast. You don't need to use grinding tools on the metal at all if you do it right.
We Build Stuff Can you post a updated video? That would be good
@hand PCguy I measure investment carefully now and use different techniques throughout the projects. I mainly keep this video up for students to show the process with preparing their molds and basic wax sizing techniques with the cheap tools we have available to us.
Nice
Nice.. what powder are you used? Where can i found that powder?
Jeweley supply stores, some gem and mineral stores.
Here are some examples:
lacywest.com/index.php?main_page=index&cPath=38_58_252
Minimal tools = furnace and centrifuge.
This method of casting has been in use since 5000 BC, theres definitely more low-tech ways to do this
Yes and the furnace is definitely easy to build yourself. Centrifuge may be a bit harder but I'd say you can go super low tech on building one and use a stretchy coiled rope to power it after winding
@@theodorekorehonen actually you can sling it by hand
can someone give me a recommendation on the oven used? any way to get a cheap one? thanks
regardless of which one you use make sure you get one that can get hot enough to melt all the wax out. I have seen people do this with home ovens but i have always been able to use a proper kiln
An example:
lacywest.com/index.php?main_page=product_info&cPath=38_58_251&products_id=977&zenid=18lv5tq62sci1q3s3067ccu9d4
Would you recommend a pressure pot to remove bubbles from mix?
Or vacuum chamber. I did not have one at the time of making this older video
No, you use a vacuum pump to remove the bubbles.
@@scala1944 You can do it with a pressure pot too. The large pressure doesn't remove the air as a vacuum does but the bubbles get much smaller and the result in terms of casting quality is the same.
i would like to know what is the wax the wax i see every one use to hold there things in place. All I know its brown and you have to hear it up please get back to ma asap if you can.
Just wax I picked up from my local gem and jewelry supplier. On my invoice is was just called wax pellets. Latest batch I picked up it was blue coloured instead of brown.
can i substitute the oven youre using for a normal household oven?
for a longer period of time of course
@@cowboyjunkie5732 that would be a very bad idea. You're looking to completely incinerate the wax residue left in the mold
Depends on how angry your oven is
The real answer is: No oven goes upto 1200 degrees F/ 650 degrees C
@@CocoaHerBeansness not with that attitude! all we need is an oxyacetylene torch, some insulation, a ridiculous amount of beer to get us drunk enough to pull off this stupid idea, and someone waiting outside with an ambulance!
What's the mixing powder called if you dont mind me asking.
Investment powder. Most jewelry supply shops should be able to source it for you
You can’t use plaster of Paris??
Cristabolite-mix exactly - don't eyeball it-fill crucible at an angle slowly from one side ,preferably using a vibrator to ensure complete flow- if you find those little bubbles of metal on your casting aggravating paint a solution of debubblizer on was up it with reduce surface tension between it and investment material/ cristabolite, 1 part liquid dish soap to 10 parts water = debubblizer.The more attention you pay to wax up the less finishing you will have and the nicer product,dump crucible into water about a minute after casting it will facilitate separation and prevent damage to casting digging out investment, be careful,wear safety everything ,I've seen molten metal thrown out of centrifuge during casting procedure on several occasions and it goes everywhere, it's a life changer,they say the pain from a molten metal burn on the top of your foot follows you every day for the rest of your Life,Food for thought.Wear at least goggles ,casting apron and shoes protective headgear and casting gloves , it's mesmerizing casting metal.
what is the powder?
Jewelry investment. Links in other comments
What type of wax do you recommend for a beginner to try with. Cheers
Wax Casting Bead for Jewelry Casting, Professional Wax Bead Carving Wax Ring Tube Mold Jewelry Making Tool (Green) www.amazon.ca/dp/B07PWQKCTR/ref=cm_sw_r_cp_apa_i_UZeuDb5EJEYMA
Yasumai Blue Ferris Carving Wax Ring Tube Mold Jewelry Making Tool Flat Side Polishing Engraving Accessories (T200) www.amazon.ca/dp/B073JDHJG3/ref=cm_sw_r_cp_apa_i_k0euDbF0NBCGH
The links are 90%of what we use 😁
It depends what you are making, pink wax very soft , green wax medium , blue wax hard.
@@scala1944 exactly!
i dont have a spinny thing can i just pour directly into the flask and let gravity do it. also is it fully necessary to melt the wax in the investment before the pour or can i let the metal displace the wax? last question whats the minimum i can preheat the flask before the pour. cuz my oven doesnt go up to 1200 haha
I'm not sure of the minimum but you need all the wax gone inside before you pour.
If not using a "spinny thing" then add a vent/exhaust sprue in addition to your model sprue similar to a riser in sand casting.
Having your flask as hot as possible helps your molten material (gold, silver, etc) not harden right away during the pour.
@@WeBuildStuff where should the vent/exhaust sprue be located? cuz the way im picturing it, molten metal would spill out the side. wheres the best place on the ring to attach it and where should the exit be? thank you for responding
Wax is melted out and then BURNT out! You don't want anything in there when hot metal is trying to get in... it might throw the hot metal back at you!
th-cam.com/video/P1VmIYheuU4/w-d-xo.html
@@leonardpearlman4017 YEP. IF anyone wants to experiment, I SUGGEST letting the form stay in the oven at full heat until it hasn't smelled AT ALL of wax for an hour - at least. And I SUGGEST that - I DON'T know.! Besides - always wear lots of leather gloves aso, and eye protection and anything else, that can reduce the injuries, whren things go bad.. OR - don't experiment with f*cking melted metal...
Pls size mkig to sholder pin(electriciti)
Tapping actually removes enough bubbles?
Usually it does. We've never had a vacuum chamber. This video was from the first year I ever tried doing this stuff. After so many years we have greatly improved our results even with minimal tooling
lol, that spin caster is super dangerous.
haha. There is a lot we have to make do with as high school shop teachers. I have improved my casting system a lot since this video :)
heloo i need some help i use SPrue around 10 MM round wat i wanna ask is : does make any difference between mine bigg 10 mm and i also buy the red sprue same to yours ( 3 mm ) whats the diference ?? and how tall should be from base to the ring ! 1 cm ?
I just make sure the model is at least 1cm (1/2" from the top of the flask. You can increase the thickness of your sprue by buying thicker/thinner sprue or melt some more wax onto it. I usually just buy whats available.
I see this on amazon: www.amazon.ca/Wax-Tool-Pillar-Jewelry-Model/dp/B08RJDF11J/ref=d_pd_sbs_sccl_3_1/141-1980502-1776461
@@WeBuildStuff thank u master
To make the wax sprue I use a syringe and melt the wax in a metal container and then use the syringe to extrude the wax when is not too liquid . You can put additional wire sprues where you consider necessary to get more metal flow to critical areas in the casting
i always grind ontop of an empty ice cream jug since i cant afford a desk, but colecting all shavings and fillings and dremmel rotary tool shavings is very important when dealing with precious metals, wasting money for every gram 2020 we looking at near 80 dollars usd, money down the drain
We use fake gold ghat cost about 16 cents a gram. Good for practice
Fancy...you tricked me...and go figure...it's a school of course can't be using real gold...🤗🤫☺️😏
@@PreciousOpal i have had students bring in their own family gold or silver to repurpose into new cast items. This is an old video and I have improved a lot with how I teach it 😊
I used to cast aluminium and brass belt buckles with my students. The health and safety NAZIS and 'design process' zealots have destroyed all of that. Kids sit around writing and getting bored and frustrated to death
We do a lot of lost foam casting with aluminum and have recently being melting copper scraps to turn into jewelry with our rolling mill
Michael Screen blame standardized testing and the diversion of school funding away from public schools for all that. :( Btw- I’m in Texas.
Is this a public school or private? What state?
@@nikiatx Well standardized testing is good, as it holds many of these schools and teachers accountable if their kids don't know basic knowledge. Funding also is not an issue as statistically the more schools get in funding, the the more student performance tends to drop. Of course there is a bare minimum a school needs to function, but funding is definitely not the reason for poor student performance, schools need to learn to not waste money, such as not buying the same textbook from a publisher over and over, especially if they aren't even going to use the text book from cover to cover. Issues with stupid safety regulations is more a factor of city and state governments who pin ridiculous regulations or lawsuits on manufacturing businesses which naturally trickle back down to the schools and universities and limit what they can do without excessive liability.
Where does the wax melt of to...Is there a hole or something?
The tail you see connecting the bottom rubber piece to the ring mold is called a sprue. Once the investment hardens I remove the bottom rubber piece and put it in the oven. Heat melts and burns out the wax mold and you are left with a cavity in the investment the shape of your mold.
Sema job sarching
santosh ghag g
C
👊
What is that magical powder you use to make the mold? Does It have a name or It just appesr msgicaly to everyone that wantsnto make a mold?
lacywest.com/index.php?main_page=index&cPath=38_58_252
It's called plaster of paris.
No Gents use R&R investment powder it's pricey but I use the plasticast works wonders for details
Stone lost wax powder
Q: Can the investment powder be replaced with, say, plaster of paris?
The powder we use needs to be able to withstand high temperatures without cracking. There are many different types.
www.hswalsh.com/categories/investment-powders-mixers
@@WeBuildStuff do you know a good US supplier?
@@nancyrandazzo7777 no. I am based in Canada. Search for "jewellery investment supply" and see what comes up in your area. Due to the weight of the product shipping can be pricey so see what local stores.
Contact a local college that offers jewellery design and see where they source from.
@@WeBuildStuff thank you for the prompt reply. I thought maybe I can sculpt wax at home, and send out to a small foundry
@@nancyrandazzo7777 good luck!
how to deal with broken jewelry candles in a vacuum
Make sure you weld them properly.
Why do you not use an air vacuum to make sure that you r bubbles are out of the investment? Is this something that you do not find necessary or too much work for the return?
Because we do not have an air vacuum
I wish we did. I did build a vibration table that helps. High school budgets!
@@WeBuildStuff I wish I had a Teacher like you in High School.
@@ThePackratg you just made by day. I'm not always the best but I give it 110% everyday!
We Build Stuff. I am now 52. I wish I could go back and tell those teachers that gave 110% what a difference that they made in my life. The fourth grade, Mrs. Parsons gave me a great love for mathematics. There is a long list. I saw a quote that said "Tell me and I forget. Teach me and I remember. Involve me and I learn." You may not know it, but the difference you are making right now, they grow and grow. Thank You for that 110%!
@@ThePackratg Thank you sir
O my God!
La cera usada comunmente es cera d candelilla con un 14 de talco( para evitar una gran contraccion)y uno por ciento de colorante.Si esta Ud.usando hule del mas usual para reparar llantas de auto:este material tiene propiedades increibles,un molde vulcanizado con este material,se ahoga en petroleo x espacio de 24hs.el molde se incha,y el grabado contenido aumenta 500 veces proporcionalmente,entonces le colamos parafina,y obtenemos una copia amplificada a un costo muy bajo.intentelo es libre proceso "jonapru".
Who are the buffoons' in the background? Did they learn anything from this demonstration?
Thia was one of the first 'tutorial videos' I tried making. I filmed this in front of two students while others were doing their own projects. I have changed up a lot since making this video but students still use it as reference for starting their wax carvings. We typically carve from scratch now and we have better resources for the metal projects now. This video is not a great example of what we build currently. Thanks for watching
bit old but, why do you need the centrifuge?
Wouldn't just poring it like a normal mold be easier and I've seen multiple people do so?!
But as soon as I search specifically for this lost casting process every one uses a centrifuge. Why?
The centrifugal force helps pushing the molten metal fully into the mould and all of it crevices. Doing it so, produces more force compared to if it was just gravity :) This also helps air to escape the mould, due to the higher 'pressure'. Alternatively a vacuum system can be used to suck in the molten metal trough the investment casting mould.
@@jakobhalskov thanks Jakob!
TO MAKE A WORTHLESS TABLE SHAKE THATS WHY HE NEEDS A PERFECTLY GOOD SENTRIFUGE, TO MAKE A RANDOM TABLE RESCUED FROM THE GARBAGE
I have seen in another video (same thing, just using a vacuum system and the flask sitting upright) that the metal might not move at all through the tiny sprue hole without some encouragement! Gravity casting might work better on a bigger scale!
What kind of powder is used?
contenti.com/jewelry-casting-supplies/lost-wax-casting/investment-n-mixing/americast-investment
Subbed
can i use plaster of Paris instead?
It is not ideal and would most likely lead to a lot of cracks and problems. There is a reason for investment plaster being used. Plaster of Paris is possible, but troublesome (been there myself)
jeez what high school gives its students gold to experiment with
Fake gold. Costs us $0.10 a gram from our supplier. It tarnishes quicker and isn't as nice to work with but can have good results and students learn the process
ah! somehow I didn't think a school district board would approve gold for students. :) Thanks for the quick answer, and I really liked your video. I haven't tried lost wax casting yet, but I have filmed some sand casting of rings. Cheers!
@@dominicdelprincipe2583 we do silver and gold if students bring in their own. We have melted down old family jewelry and turned them into new keepsakes.
Can you say me please what powder did you use to make a mixture and pour it to the can?
plaster
Girls Girls Girls!!!
The wax ring is called a model a mold is what the wax is injected into!
Congratulations! You found one of the MANY errors I made as a beginner while teaching myself and other people. I know better words now :) Thanks for watching
@@WeBuildStuff because of a high school instructor like you I have enjoyed a successful career as a professional bench jeweler and forty years as a platinum smith. I only corrected you because of a pet peeve I have of watching the terminology of my trade bastardize to the point non recognition. I wish you many years of success teaching young people how to use their hands to to make rewarding objects. Regards.
@@joejeweller7614 thanks. There are many things I have picked up over the years and had to figure out myself without proper instructors other than a textbook and maybe watching someone explain it "their" way. TH-cam and meeting with other experienced teachers/mentors has really helped me become a better teacher. A lot of the classes we are supposed to teach were never covered in the trades school/universities I've attended. And I fully admit my first 5 years were tough and I wasn't an organized or great teacher. Things run better now and when we do any casting most kids create their own models with wax and sometimes a combination of 3D printing. With technology always changing my job as a shop teacher is never stagnant. I must continue evolving to stay relevant and get better at my craft. 12 years in and finally have most of it figured out!
Thanks again for watching.
A general comment. I wonder why pouring from a crucible, using gravity, would not be simpler. IE a standard crucible not that centrifugal one.
It can be done that way as well
The centrifugal forces help to push and force all the molten material into every crack forcing out as much air as possible. You can do direct pour but you might need an 'exhaust hole' or vent
I can imagine if you're doing very detailed waxwork you want to have the most consistent method of casting possible so you know your time won't go to waste
When I was in high school shop in the 70’s, the students did the work. My how times have changed!
Your teacher didn't give you demonstrations? When I filmed this video it's original purpose was for students who missed the demo or forget some steps. Just a different version of a procedure sheet.
@@WeBuildStuff I think he means he tells the kid what to do and the rest of the class watches, then the rest of the class tries it out. That is how I was taught. Personally I don't see much issue with either method.
Thank you, sir, for this wonderful video. It was very detailed and successful. I also work in this field, but I had a problem with the appearance of distortions on my jewelry and other incomplete maturation. Sometimes only the finger of the tree and the sub finger attached to the ring appear. Even if you have a WhatsApp program or an email I can communicate with you and send pictures of my models. I hope that we will find a solution to these problems, thank you.
Make sure your flask/mold is hot when you pour and you burned out all the wax model in your burnout oven. Make sure your molten metal is hot enough.
I purposely use more silver/gold than is needed to fill up the cavity and then just cut off the excess. Using extra material forces it to flow through the whole mold cavity. You end up with a "button" of metal under the tree/spru that can be cut off and remelted for future use.
This is only a hobby for me and is just one of the introductory projects I teach teenage students. If they want to learn industry standard techniques they have the option of post-secondary or university level courses.
Good luck!
What is that powder called
Investment
Here is where I buy from in my area
lacywest.com/index.php?main_page=index&cPath=38_58_252&zenid=d78fv0jr8ht7s5pef6535845u3
I knew it deep in my heart but I'm still disappointed you don't have to wind up the table before spinning it
I filmed this so long ago there are a lot of things I would redo in filming. I wind it up 3-4 full rotations and add counterweights on the opposite of the crucible based on how big the cast will be. I do have an updated casting video showing this with 3d printing PLA :) Thanks for watching
th-cam.com/video/a0Ond_9SaH4/w-d-xo.html
Is it possible to use the cooking oven to bake the dough? Could you tell me where you can get these kind of cans to make the molds and the name of the products you used to make the dough?
It is called investment powder which can be found online or from a jewelry supplier. The 'cans' are called flasks and they have a matching rubber base depending on which size you buy
You can potentially use an oven to burn out the wax mold but i habe have never tried it. I go to 1100 degrees, cool to 900 then take it out to finish the cast/pour
@@WeBuildStuff Is there any other way to do this process without oven?
@@ineseiro1381 you will need some sort of strong heat source to burn out the wax completely and cleanly.
You could look at cuttlebone casting that only needs a torch or fire to melt the final material (i use pewter)
@@WeBuildStuff Thanks!
Causes of jewelry mold breakage during casting
You heated the mould very fast, you must raise the temperature slowly.
What dremel bits are being used to clean the finished products?
Stuff like this as well as sandpaper
www.princessauto.com/en/detail/158-pc-rotary-tool-accessory-kit/A-p8005851e
www.princessauto.com/en/detail/deluxe-buffing-and-polishing-kit/A-p8263022e
Awesome! Much appreciated!
hey how do you make the original wax shape? do you hand carve it?
You can hand carve but these are pre made molds I bought from waxpatterns.com
You first make the item using metal which is called Master and you then make the mould in rubber, and that way you can make thousands after.
لطفا" هل هذه مادة الشمع او ماده اخرى
نعم هو الشمع
How many went into professional jewelry making?
If you want to become a jeweller the best way is apprenticeship.
That spinning machine looks so dangerous...I wonder if it is worthy doing that instead of just using gravity
Gravity may not make the molten metal get to all of the mould cavity. Spin casting is more cost efficient than using a vacuum pump to suck the molten metal to completely fill the cavity.
If you don’t like the centrifugal method which is an old tried and tested method, you could always vacuum cast you’re investments
You really have to try these videos for sound purposes with no one else in the room.
I've done that in my latest videos. This was just filming a demo in front of students for the purpose of giving them something to rewatch. Somehow I ended up with more views than I expected
I am jewellery casting man.
All this wax stuff was absolute nice and informative. and then the dremel... big oof
can you use candle wax ?
You can use just about any kind of wax as long as it retains it's shape during the casting process. I have used plastic toys in the past to make molds. I do prefer harder waxes as it is easier to carve and manipulate. Candle wax seems like it would deform to easily
cool thanks
Mój Boże, to nie jest nawet średniowiecze, to jest epoka kamienia
Powder name....plz.....anyone
Jewelry investment
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@@WeBuildStuff What is this powder used for
@@riotv3802 did you see how we used it in the video to create the mold?
What is this powder 7:19 how to purchase and make buy this
Links to investment powders in previous comment replies
@@WeBuildStuff what
If you scrolled through the comment section you would find this link
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Beaucoup trop de bulles d'air. Mauvais travail, il faut passer le cylindre sous une pompe sous vide pour retirer l'air du plâtre.
sloppy
I have changed my technique completely in the last 5 years. I will eventually put up an updated video fixing all the mistakes I've learned from.