You can use any nozzle with our material. The best substrate to use is PEI (ULTEM). VXL will stick perfectly to it when the build plate is warm and easily release when cold. You should avoid using CFC or Epoxy plates. The adhesion is so strong, you will not be able to remove the layer sticking to the Epoxy. But don’t worry: VXL is dissolvable. You can either put your build plate in the dissolution bath (take care your build plate can take the alkaline pH of aroun 10.8). Or you can dissolve VXL with Acetone. Take proper precautions when working with organic solvents.