I think they are very similar except for size. I have the CFF5 model and it requires a lot of chocolate to have it flow nicely. I am thinking of purchasing the CFF4 so I don't have as much wasted chocolate.
Some compounds of californium: CfF3, CfF4, CfCl2, CfCl3, CfBr3, CfI2, CfI3, CfO2, Cf2O3
Californium commonly forms compounds such as californium oxide (Cf2O3) and californium chloride (CfCl3). These compounds are primarily used in scientific research due to californium's radioactive properties.
Californium typically forms compounds with ligands to stabilize its high radioactivity. Some common molecules containing californium are californium chloride (CfCl3), californium nitrate (Cf(NO3)3), and californium dioxide (CfO2).