Formula for blank mold

[Dr_N]

I saw recently where someone had posted a formula for finding the inside dimensions for making a casting mold, that accounted for kerf thickness and blank size. I have read and re-read through posts but cannot find it. If anyone has that, could you please remind me of the formula.

Thanks,

Dustin

 

[Gregf]

http://www.penturners.org/forum/f178/casting-molds-153571/

 

[Dr_N]

http://www.penturners.org/forum/f178/casting-molds-153571/

Thanks, I knew it was out there!