After adding electrical tape to the flask seam and side hole I melted 1 1/2 ounces of sterling silver, turned on the vacuum, and poured the molten metal. A very good casting!
Definitely a shop vac or other vacuum cleaner. No need for a vacuum pump because even the densest clay like Red Clay or Delft Clay are still not compact enough to require much suction like is needed in investment casting, plus the vacuum is used in place of the vents so air and gases can be removed.
I had the same thought during the pour.
Looks fantastic.
My heart sunk right after the pour and what a great surprise when I opened it.
Looks awsome
Nice!!!!🙂🥂
Looks great. I do have a question though. It sounded like a shop vac. If it was, why would you use that instead of your vacuum pump?
Definitely a shop vac or other vacuum cleaner. No need for a vacuum pump because even the densest clay like Red Clay or Delft Clay are still not compact enough to require much suction like is needed in investment casting, plus the vacuum is used in place of the vents so air and gases can be removed.
Do you have a video on how to make the vacuum plate?