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How to make Synthetic Ruby with an Electric Arc at Home / Part 2
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- Опубликовано: 29 май 2019
- How to make Synthetic Ruby with an Electric Arc at Home / Part 2
In this video, I´m trying to increase the sice of my homemade rubys. All compounds can be bought at a pottery supply store. For the electrodes, I would recommend looking for "Graphite Stirring Rods". Don´t use rods from batteries, as these are contaminated with electrolytes. Electric arcs produce dangerous UV radiation. Do this experiment at your own risk.
You can reheat the powdered downward side with either an electric arc or high temperature torch, to get rid of powdering on the ruby pieces.
Apparently pre-heating a high temperature container (like a drilled-out graphite cylinder with reasonable wall thickness left over) with either an arc or torch can help too.
It's very hard to do control on the rate of ruby formation/melting with an electric arc in such a small experiment, but lower amperages with slightly higher voltages may work.
Similarly, placing the created ruby directly into a pre-heated electric kiln, one that has at least low'ish temperature metal smelting temperatures+/ 1000°C+ or more available to "cool" (IE, leave it on for another ten minutes-four hours at such a temperature (400/ 600/ 800/ 1000°C, try some out for what works with your equipment), then turn it off and let it cool to room temperature over several hours) as soon as possible (the moment you can pick it up with tongs to put it into the kiln for 10mins/4hrs) may help consistency of produced ruby fragments as well. Or drop it in for a minute or two to ensure some void removal, then shock it with cold/warm/hot water, or some metho (tends to be 95%+ ethanol these days), your choice (depends on what sort of ruby you want). Change kiln temperature/time in/cool-down time for various hues/lustres and UV phosphorescence from your rubies.
Give them a polish afterwards with diamond grit paper on a wheel or belt sander (you can also buy diamond grit sandpaper to use by hand. Use gloves, wear a mask, if you're going to do it mechanically. Maybe even by hand). They're not gem quality, but you'd be surprised what a polish does to them. Between annealing what is essentially a glass-form with a semi-crystaline slightly less stressed structure, and a nice polish to it, I think you'll get good results.
If you can manage to pressurize either the electric arc setup and/or the annealing/crystralization kiln with the correct gasses, you've essentially got a small scale commercial setup for producing low quality synthetics.
If you're not concerned about gem quality/colour, some moderate temperature flux should assist in getting bigger rocks for your materials at lower amperages as well. It's essentially glass-making, but with titanium oxides and colourants, instead of silica (note, don't use silica as a flux. Silicon/commercial Silicone stuff tends to go into, and stay in, plasma states at arc welding temperatures/electrical inputs. Mini-ball lightning experimental hot ouch burnt failure awaits you if you do).
So... while it's still hot, you should slap that big globby ruby into a microwave and heat it on high for several minutes to ensure that the end product has a higher transparency.
Microwaves will heat glasses as long as they're in a semi-molten state when they start irradiating the target.
Interesting. I'd love to see the result.
When you are trying to remove the white powder from the ruby, you should remelt the ruby and cool it and the ruby will be clean.
Nice man. I performed a variation of this using a DC flyback transformer in my small vacuum chamber. Purge all the air, then fill with argon a couple times. You'll want some argon left in the chamber at low pressure for the current to flow. This is one of the more fun ways to make ruby.
It really is a fun way to make rubys. What is the purpose of the Argon? Will it keep the ruby from turning black?
@@SomeAustrianGuy It is inert and allows the plasma to arc between the electrodes. For ruby, you don't need to worry about the Argon, but reducing the air pressure is necessary if using a flyback transformer.
@@SomeAustrianGuy ...also, the ruby always turns black when heated from my own experience.
@@SomeAustrianGuy I added your channel to my related channels module.--I didn't think you'd mind if I did. I'm always excited to watch your videos because we have a lot in common, especially with ruby experiments. You do have much better production quality than my videos, because my videos have no production quality still. LOL. I've got a few projects in the works though which I'll finally take time to edit and produce something more enjoyable to watch than most of my previous vids.
I will hopefully have a decent video extracting manganese from a large specimen of rhodonite near where I live.--I'm only performing this on a relatively small amount of the mineral as I'd rather not destroy it completely. I think it's a fairly rare find I stumbled upon while rock hounding.
@@mwilson14 Thank you very much, I´ve also added your channel to my related channels. I really appreciate your support. Your channel was one of the reasons i started making rubys and i look forward to your new videos.
Im currently doing this experiment in a graphite crucible, but apparently the graphite electrodes and the crucible deposit too much graphite into the ruby so it turns greyish. Maybe i will try it with a flowerpot as yours dont seem to have any grey spots. Anyway awesome video will add this video to my collection for DIY rubies!
Can you smelt it into liquid form? And use the vaccum chamber method but with added cobalt powder?.
Hey just curious what do you think made them larger?
His voice remind of the Fake Nameks on DBZ Abridged
How about diy ruby grind disk or blade? Cutting can be done by other workers, main part is growing
How do you make Ruby Mixture?
Aluminum oxide mixed with chromium oxide, be sure the aluminum oxide is very white. Then add a very small amount of chromium oxide to your mix. The powder should be white with a VERY small amount of green. Be sure to mix very well
Can i use carbon rod from old Aa battery and low voltage high current supply ( V ? A ? Unknown for me ) inted this professional Electric Arc ??
yes you can, I´m using 150A at ~20V
I think the best method would be to put the mixture in a pipe and hammer it down into a pellet with a rod. Then you can use the arc to melt the whole pellet into one ruby.
Wooowww such an interresting video!
I just made a ruby using the sun. I uploaded a video of it. Worked out great!
cyclopentasilane Si5H10, liquid, with KNO3, should be fun to try
You need a higher voltage
Can I ask the could you not create a mold from a graphite stock and then apply the mix also would you try hitting the non reacted aluminum oxide with with an arc to clean it off ??
cant wait to see Sapphire!!!
What do you connect the negative carbon stick too? is it connected to anything
2:46 what if you re heat this ruby again at that temperature ???
you can melt them together to smaller spheres. They might get a bit cleaner during remelting
What will it become if i only melt Aluminum oxide without chromium or can we use other material instead chromium ??
I am asking it because i heard that chromium is responsible for its reddish colour ! Or chromium is important for making aluminium oxide crystal into anything that can called as ruby ??
Only aluminium oxide will become white. Metal oxides give different colours, iron (blue/green), titanium (blue), vanadium (yellow), nickel (green), cobalt (dark blue). Also everything except red is called sapphire.
@@SomeAustrianGuy ohh great !! thank for this information👍👍
Is chromium only gives it (ruby ) its laser emission properties , or other oxide ( like you mentioned ) with AlO2 can also gives laser properties for different wavelength ??
@@omsingharjit Sadly I don´t know a lot about lasers, but i´m pretty sure that different oxides lead to differnt wavelengths.
@@omsingharjit You have to know: If you want to make s laser out of them, they've to be hella clear and transparent!
@@SomeAustrianGuy Do you know any way to make them transparent?
Imperesive, but i need help about i have synthetic ruby boul which is transparent but i want to rduce or vanish its tansparency, have u email or other contact
could you try titanium thermite, TiO2 + Al?
baking soda water should work
I have footage of ~5 kg of TiO2 thermite. Might post it soon.
is it toxic at all? im thinking of doing this for a school project
😂
Why? What are these rubies used for?
I think heat is important, but to much heat is possible