I have been getting a lot of miscasts lately and don't know why?
Raffi Keuftedjian · Jul 3, 2013 at 11:28pm
Raffi Keuftedjian
What content metal you are using and with centerfuge casting machine but try one extra spin on the casting machine also cast hotter temperature but faster try that and good luck.
Posted Jul 3, 2013 at 11:28pmJul 03 2013, 11:28:50 pm
Question
I have been using the same metal for years and the sprues are short and 8 gauge , the burn out is good because the other rings are coming out I only have trouble with the one type of metal and have been using it forever. Anybody have any suggestions?
Answered By
Raffi Keuftedjian
Owner/Ceramist at Five Star Dental Lab · Millbrae, CA
Upset with labs that don't have a value for there talent what they do race to the bottom with tthere prices
Mary Brown
Well I think I figured it out about the miscast. Thank you for all suggestions, what the problem was not enough oxygen in the gas mixture. Once the oxygen level was moved up the problem was solved. I guess the flame was not hot enough even though I had sharp edges on my buttons.
Darlene Threlkel
1). If u r burning out more than 1 ring at a time. Burn out this problem metal by it self you could have a cold spot in the burn out oven. Or have just overloaded the ovens ability . 2) if already burning out by its self increase the burn out temp...[More] by 100 degrees F. I have found this to help many...