Lost wax Casting - Centrifugal Casting - Vlog#84
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- Опубліковано 13 кві 2018
- This vlog is all about the investment, lost wax burn out and centrifugal casting.
THE EQUIPMENT I USE TO VLOG
Sony RX100 V Camera; amzn.to/2F6LTFX
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Andrew shows you many hints and tips that he has gained from his experience as a professional goldsmith.
Andrew Berry, a professional jeweller for 30 years, is the training director of www.AtTheBench.com, an award winning on line jewellery training website.
![Lp. Последняя Реальность #107 РОДНОЙ ДОМ [Финал] • Майнкрафт](http://i.ytimg.com/vi/IK3QKzKUlHM/mqdefault.jpg)
Reminds me of casting gold restorations for teeth back in dental school. I still remember the burnt wax smell 23 years later.
The organization to which I belong (400 members) from time to time holds casting classes. So far I’ve resisted getting into that; too much else to do and learn. Yet I do like to watch the process and learn. I might first do cuttle fish casting for experiment, and I recall a video for such of yours. A friend, who only casts, has three large tool boxes of equipment for casting, that she always drags into the lab, having said that else, she might miss something she will need. This is aside from all the heavy duty equipment the club provides. Daunting. At least for now I’ll stay with forging, sawing, soldering (sautéing) and setting. I also grind and polish stones. Beginner at it all and will always be a beginner. Presently making beads in sterling and copper.
I did all of my burnouts in a little brick oven that I built out of some random fire brick that I had because I was a bricklayer at one time and the outside I used red brick that was away from the heat I had a chamber underneath the chamber that I had to set the wax investment mold on it was made of copper with steel reinforced underneath it and it worked beautifully I used random pieces of 2x4 from my woodworking and sticks and branches from my yard that I would cut up. And it worked absolutely beautifully believe it or not I taught all this to myself from the public library LOL
Out of the blue a very nice person replied to a comment I'd made 3 years ago about casting. Sounds like you simplified the technique even more than I could have. Kudos! I gotta get back to waxups and castings. And burning out and casting the occasional odd thing. I have some mini acorns for example...
Thank you for another great video mr Barry. Would you mind sharing your torch/ torch head setup for the melting you did in this video? Best regards Sakarias W.
Beautiful dragon there. Will you be showing that finished or finishing that in a later video?
You need some ventilation in that room my friend!
I miss the Lost wax casting I did a little bit of gold but mostly silver jewelry. I was young and didn't have any spare money so I basically just researched everything at the local library and I was quite good with my hands so I built a centrifuge from a old bicycle frame and it worked fabulously. I can't remember any of the recipes for investment I remember Crystal light was in one of them which was kind of expensive I think silica and after that plaster of Paris I think but I can't remember the exact recipes are in my mouth. I don't know if I could get back into it I'm kind of old and I do pottery that takes a lot out of me I do some metalworking and electronics to fill my time. I think I would like to do some more jewelry it was sure cathartic work.
Thank you so much for sharing!
Hello Mr. Berry. I do enjoy your videos and have learned a lot from them. However, this one on casting has left me somewhat confused. Please bear with me and this this long comment. Hopefully you or another viewer can address my questions.
I'm old. In 1975 I attended dental school. We were required to do all of our own lab work at the time except for porcelain. Dentures, arch wires , crowns bridges etc.
Anyway. I set up a lab in the basement of my apartment. I had a Jelenko burnout oven and a broken arm spin caster set into the drum of a salvaged washing machine drum. I used a propane torch (small propane tank with a hose and attached torch). I used a spatulator hooked to a little vacuum pump to mix and double the investment and a buffalo vibrator to pour the investment into the ring.By the way the spatulator with mild suction gently took care of air removal and I never experienced the glorpy mess your vacuum produced. Ithink we used dilute green soap as a debubblizee and borax powder as a flux.
We had 2 investment compounds available to use. One was Crystobalite (sp?) which as I remember had to be ramped up partway during burnout (Inever used it) and the other, Beauty Cast which was held at a constant.temperature around 950° or so after putting the ring in a warm water bath to set.
Okay. So why tell you all this? Because when I cast dental crowns and bridges (and like all dental students the occasional piece of jewelry) my burnout time was 1 hour to 1 1/2 hour MAX!!! Not all day. Heck, during Boards we had only three hours to prep a tooth, take impressions, wax it up, cast and seat it! And yes, crowns and bridges are on the small side but are precise. And I did large jewelry pieces the same way.
The other thing I noticed was that when you cast your ring was out of the oven sitting in the spin caster while you were prepping the metal. For us, the burnout oven was next to the spin caster and the ring was not removed from the oven until the metal was perfectly molten and ready to cast. The ring was never allowed to cool and there were never any problems with porosity etc. I held the torch in my left hand on the metal, removed the ring with tongs and my right hand and placed it in the spin caster, then let her rip. Took me longer to type that than it took to cast after the metal was molten.
I realize that dental crowns are fairly small. But I cast some sizable chunks of silver and gold jewelry too during my dental school years. Never had an incomplete burnout or problem.
Anyway. I just wonder what experience others have with greatly reduced burnout times etc. I mean we used to invest and burnout all kinds if things, dead bugs, little plastic trinkets, seed pods etc. And we didn't burn them out for half a day.
Alas, I decided dentistry was not my bag, and after a couple of years of practice chose an alternate career from which I have now since retired.
I want to do some more lost wax castings which is what brought me to your video -- for refreshment of technique etc. But expletive! A whole day to burnout??? Why??? That doesn't make sense to me.
So, I would welcome your comments or those of others. Again I love your videos, am subscribed, and plan to join the site for full access to your instructions.
Thank you
Was having problems editing. Pardon the mistakes that Autouncorrect inserted that I didn't catch, like "double" for "debubble" etc.
I enjoy reading your comment. This is all new to me. Perhaps you could make your own video on casting, smth like "old school" That would be rwlly smthing new and much appreciated 💕x
@@svetlanagutic3449 I'd forgotten I'd written this. You are the only person who ever responded. I'd hoped Mr Berry would give some input, but no such luck.
I don't have my "lab" set up anymore, although I still have my spincaster in its washing machine tub and bench and my burnout oven, so I would like to get back into casting. Maybe this summer.
Dental lab technicians would probably be more than happy to share their casting experiences with you--and wax up tools and wax suggestions. They'll have all the "Skinnies" (tips) for smaller single pieces like those I made to.
Funny thing:
My father built the workbench into which the spincaster tub was inserted. He built it for me IN the basement (more like a tiny damp cellar with steep narrow wooden stairs). When I moved after dental school some brawny classmates helped me move out. They spent hours trying to figure out just how to get the bench out of the basement. They almost gave up but I (and some beer) convinced them they could do it and they finally did. I NEVER told any of them that it was built in the basement in the first place.
Thanks for replying. You'll enjoy casting.
@@deborahlong4417 perheps he is much too busy to answer. But seriesly, could you make a video about centrifug.casting to explain more about it 💕x
Excellent cast, what brand of plaster do you use? I’m use to using Satin Cast 20.
Another fascinating process. Love the Tree of Life design, as Above, so Below.
Wow, 55 grams (almost two ounces) of Gold retail for 1,500 pounds. Seems so cheap now in 2023. I think its about 1,800-1,900 approx an ounce at the moment.
Great casting content. Trying to find a good torch for melting. What model is it that torch?
Thank You
Andrew, thanks for your videos, are all the time very useful and appreciated. Can you tell me the name of the big burn out oven please? And do you still suggest this big guy? TNX
Andrew, I just LOVE that shirt! Quite fast and snazzy, good for you! Not just a brilliant jeweler, a fashion leader as well!
Thanks for the video! I noticed the Hiragana on your lapel or backpack strap and got curious since I've begun to study Japanese. What did it say if I may ask?
Thank you for sharing. I often saw on wax models tiny prongs on the ring that supposed to be for diamonds. I wonder how to set the tiny prongs to the diamond, since the prongs are so tiny. And the prong surrounded by multiple diamonds like in this pave: static1.sw-cdn.net/files/cms/materials/top-wax-nub-ring-standing.jpg
I would love to do casting like this but am terrified of that piece of equipment :-)
Would love to see the finished item, I don't use instagarm
👍👍👍
I have noticed during your walks many palm-like trees. I am correct? If so, how do they survive in a snowy climate?
Frank Gyori We only have a tiny bit of snow in the winter usually so the palms manage OK
Is there any other smaller alternative for the vacuum process? Can it be done without vacuum device at all? Ty!
Why centrifugal over Vacuum? Given you need the Vacuum unit to prepare the flasks and it has a casting capability, surely that's enough for infrequent use?
dumb question but does the neycraft need to be bolted down?
Most definitely
Hi, Andrew. Can I see the time/temperature table for heating the kiln anywhere please?
Usually the suplier of the investment will give you the best burning times and temps. I bring it up to 850 Celcius and cool it down to 500 within 2,5 hours to cast it. I also use a tray in the paragon oven to catch up the wax before it starts to burn.
If you're using a paragon kiln which I use and a couple of small flasks like he's using, the first is 149c to melt the wax. Usually takes about 30mins, then 371c. This gets rid of the moisture and you'll see steam coming out of the spy hole. Again this takes about 30mins, until the steam subsides, then full temp 732c for about an hour and a half.
I wouldn't be happy having an open topped spin caster though. If something goes wrong you can have molten metal flying all over the place. If I was that guy I'd duck down below the casting machine before I let it spin, just in case..
Metal won’t get thrown out because there is a rolled top lip to the unit 👍🏼
hi i have sent u a many request and haven't gotten any reply.. would u be interested in doing a gold skull ring for me if i sent you the gold and diamonds for the eyes.. if so can you please send me a way i can get in touch with you ?
brandon hall hi, sorry but we don’t undertake any commissions where the client can’t come and meet face to face
Warte wenn ist fertig wie es ausehen wird