Frequently Asked Questions - Astro-Vest^TM investment

Can I use ASTRO-VEST investment to cast stones in place or for gold casting?

Although Astro-Vest investment will certainly create a mold strong enough for stone or gold casting, it will not protect the
stones from heat damage. ASTRO-VEST investment is a much harder investment, especially when removing the investment
from gold castings. Generally, a phosphate material is not recommended for gold or silver castings because the softer
metals become distorted or damaged during the process of cleaning the investment from the casting.

Is 1400^oF (760^oC) the maximum temperature for ASTRO-VEST investment burnout? If not, what is?

Phosphate materials can withstand temperatures of 1800^oF (982^oC), but these temperatures are not normally required for
most casting applications.

Still have questions? E-mail us at:
Jewelry Questions

Some files on this site are available for downloading. You must have Adobe Acrobat Reader to view these files. If you do not have Adobe Acrobat Reader, you may download it by
clicking on the Adobe Acrobat Reader logo to the right. There is no charge for this software.

E-Mail R&R Questions or Requests	R&R Terms & Conditions of Sale
Ransom & Randolph
3535 Briarfield Blvd. Maumee, OH 43537 USA	US Toll Free: (800)800-7496  Phone: (419)865-9497 Fax: (419)865-9997