A Simple Way to Dewax Casting Flasks
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- Опубліковано 12 лип 2017
- www.diycastings.com Prior to burnout, a person can use some sort of hot plate, add a sauce pan with water, a non corrosive metal basket, and boil the water to produce steam. I have also heard that a pressure cooker set at around 15lbs works excellent, although I've never tried it.
This doesn't work with hard carving wax, just injection wax or other soft wax. I prefer to do this outside as well in a well ventilated area and not near anything that could catch fire. www.diycastings.com/
Isn't the mold going to soak and break under the steam ?
Thank you, I did enjoy watching this. That's a great idea. I normally just pause my wax burnout then remove a tray I used to catch the wax, but that's a risk.
Since this video I have found a simple food steamer works even better.
@@craigdabler-thediycastings7511 Great idea! Thank you.
Some jewellers wax (fx blue KERR) melt at 103 degrees - so this doesn't work. I use an ordinary over and have water in the tray under the flasks, also lifted free of the tray, to catch the wax to reuse and stop it from smoking. Just don't go to high temp - it takestime, and the low temp reduces water evaporation.
I should remove this video. Now I use just a simple rice or food steamer and it's much better. Thanks.
does ordinary oven works?
@@JayCustomGrillz For the first part it works fine. But you will have to heat the mold up as usual, to get the wax that soaks into the plaster out of it. The finer details you are trying to cast, that closer to the metal's melting temp, the mold should be (I suggest following the investment production temp) when casting. I use a system called Steam casting", where you force the silver into the mold with steam. I suggest you google it.
doesn't this soften and distort the cavity?
ist only for the sake os smell or it improves any other area? ;o thanks tho =)
Does all the wax comes our or less,
When you say you put it in the oven afterwards, fo you mean kiln or standard oven to dry it out?
Burnout Kiln
Hi I am a casting newbie. My question is, does this completed remove the wax? After this step I can pour in the molten metal? Or there is a new to further file this up to high temperatures to remove wax ?
The burnout cycle with the kiln removes the wax and prepares the investment so the flask is ready for casting.
@@craigdabler-thediycastings7511 I mean will steam de waxing completely remove the wax ? Or there is still a need for dry burnout ?
@@swaroopcool22 The flask must still go into an oven for a burnout cycle because the investment must bake to the point it becomes porous to allow air and gases to pass through it.
That Plaster of Paris
What sort of mold mixture do you use? I’m thinking of casting aluminum or brass and don’t want to use green sand or anything else but can’t seem to find a recipe or name for what the mixture used for casting is. Thanks and keep making cool vids!
This is jewelers R and R investment for vacuum casting.
Look up ULTRA-VEST
And the moisture retention inside the investment doesn't have an effect?
It dries out fine in the oven and so far my casts have been fine. As anything you try new, experiment and form your own conclusions before casting anything important.
Can you reuse the wax or is that a stupid question?
Just make sure it is clean and you can reuse it.
Do you use water in the bowl?
Yes, but I have now found that an inexpensive food steamer works even better. I have a video on it.
interesting ,,,but my question is why do you use water inside??? why don't you use without water??? does the water makes difference here??
Boiling water creates steam and the steam removes the wax. However, just buy an inexpensive food steamer which works far better.
I don't have a kiln. What can used to do wax burn out for silver casting
You have to have a kiln. There is no alternative.
@@craigdabler-thediycastings7511 thanks so much.
My question is can I do with any wax resin that with this method Sir
Resin breaks down inside the flask at about 650* F or so depending on the brand and turns to ash which eventually disappears unlike wax which melts and drips out into the oven. This actually works even better with a rice or food steamer but water boils at 212* F so only waxes that melt at or below this temp will steam out.
@@craigdabler-thediycastings7511 I thank you from the bottom of my heart for your great answer Sir 🙏🏼🍀
Water will not damage the investment surface?
They aren't sitting in the water and it's just the steam that melts out the wax.
Craig Dabler but even with the steam does it soften the investment? im actually scared to try it but it looks like it works in your case tho
I actually do not enjoy seeing this.