I have spend a major portion of the day abrading fire scale off of
some old casting made before I started using the anti firescale
vacuum casting process. I must admit, I forgot how much of a pain
removal of fire scale is.
All you caster who get fire scale, check out the anti fire scale
vacuum casting process on the Orchid's jewelry making article site.
The cost to use the process is next to nothing and using the
process will save a big bunch of time in polishing.
Lee Epperson's Articles at The Tip's From The Jeweler's Bench
Improved Anti-fire Scale Casting Procedure
Firescale Prevention During Vacuum Casting - An Inexpensive Method
If you have any questions contact me.
In hot Phoenix where fire scale is a thing of the past.