When the wax dissolves during the burnout, why aren’t the stones just rattling around in the mold? I’m confused as to how they stay in place when the wax melts and the mold is empty. Thanks for the video!
@@craigdabler-thediycastings7511 I've been thinking the same. So from your answer it sounds, to me, as if there has to be cavities around the stone, so it "grabs"baround it. Is that correct, because I wouldn't think, that the investment would "stick" to the stone?
I was taught, that the reason to hold the flask at an angle, is to pour the investment on the side, so it rises from the bottom around the wax, and reduces the risk of air bubles getting caught on it.
jewelry makers use a crock pot or other warming non metal container with water and some sort of pickling solution to take the surface oxidation off the castings. It's very common. I use PH Down, the jewelry tool companies sell it as Sparex plus there are other more environmentally friendly options as well.
No because this setup doesn’t get hot enough to harden the investment to a hardness needed for the centrifugal force. Vacuum is gentle enough that it works.
There is no heat cycle. You just set the flask in place, turn it on for an hour and cast. Actually, I run it at level 5 for 30 minutes and max the last 30 minutes.
@@craigdabler-thediycastings7511 I just looked up carving wax melting points. They are approx 220-240. Do you think they’d still work with your steamer/burn out unit?
Craig you are genius!!!
Please talk more about that mini oven.
Creig, get a hug from Mexico City.
Thanks for you video
When the wax dissolves during the burnout, why aren’t the stones just rattling around in the mold? I’m confused as to how they stay in place when the wax melts and the mold is empty. Thanks for the video!
The surrounding investment holds them in place.
@@craigdabler-thediycastings7511 I've been thinking the same. So from your answer it sounds, to me, as if there has to be cavities around the stone, so it "grabs"baround it. Is that correct, because I wouldn't think, that the investment would "stick" to the stone?
I was taught, that the reason to hold the flask at an angle, is to pour the investment on the side, so it rises from the bottom around the wax, and reduces the risk of air bubles getting caught on it.
Of course, as well as helping to prevent the investment from hitting the wax in a drop down pour and breaking it off.
What kind of stones can be used with this method?
Why not burn out oven ?
Hi Craig, how long did you keep the investment flask in the furnace before you were ready to pour
This is a system I created that uses a 60 minute burnout.
I have been trying to create a ring for gypsy setting, 3x5mm Emerald cut Sapphire. Is it possible to cast in place with this method?
26:21 what you mean with “put them in the pickle”?
jewelry makers use a crock pot or other warming non metal container with water and some sort of pickling solution to take the surface oxidation off the castings. It's very common. I use PH Down, the jewelry tool companies sell it as Sparex plus there are other more environmentally friendly options as well.
How would 1.1mm round natural diamonds do with wax resin ?
Confused, if you steam the wax out, what is holding the stones in place
The investment is contacting the stones on both the front and the back so once the wax is gone they are still completely secure
How it is possible that stone doesn’t break when you put them on the water
They have cooled overnight.
Can you use the centrifuge with that instead of melting in the crucible?
no
No because this setup doesn’t get hot enough to harden the investment to a hardness needed for the centrifugal force. Vacuum is gentle enough that it works.
A steamer works to melt the wax???? Woah u just saved me on an unnecessary kiln cost
Water boils at 212* F so wax will steam out if its melting point is below this.
I'm really curious about your investment heat cycle. Do you heat slowly to a specific temperature and hold it there or do you do another technique?
There is no heat cycle. You just set the flask in place, turn it on for an hour and cast. Actually, I run it at level 5 for 30 minutes and max the last 30 minutes.
Thank you!
What special wax do you use so you can use a steamer?
Injection wax melts at about 160* F.
@@craigdabler-thediycastings7511 I just looked up carving wax melting points. They are approx 220-240. Do you think they’d still work with your steamer/burn out unit?
Steam is only 212* F so anything above this won’t melt.
Hey how long did you cook in in frurance. Also what sheet you using between vccume and flask
60 minutes. I use the silicone pad from Rio Grande.
what is the spec of your vacuum pump?
This is just a 3 CFM 1 stage but the vacuum chamber is so small it doesn't need anything bigger.