SF Piezolectric SFX SF Piezolectric SFX ver 1.0; 2001. Freeware. SFPiezolectricSFX SF Piezolectric SFX is a trademark of the ShyFonts Type Foundry. ShyFonts Type Foundry ShyFonts Type Foundry SF Piezolectric SFX is a trademark of the ShyFonts Type Foundry. http://www.shyfonts.com/ http://www.shyfonts.com/ SF Piezolectric SFX.ttf