I've had the best luck with smooth PEI. I get a thicker sheet and make sure to use the 3M tape to hold it to the steel sheet. Most of them are available with the tape pre-applied. I also like to hold it down with weight overnight to let the glue on the tape set.
For really sticky filaments, the textured PEI is nice. It lets go a little easier, so plastics that don't stick as well aren't as good a choice. I do like the texture on the parts though.
For really sticky filaments, the textured PEI is nice. It lets go a little easier, so plastics that don't stick as well aren't as good a choice. I do like the texture on the parts though.