I made a simple cupcake to use as a test for trying to get my printer to print without a raft.
I printed this on an IdeaWerk 150 without a raft using blue painter's tape on the build plate.
I experimented with making the extruder slightly hotter (225 degrees) and also printing it slower (40mm/s).
The higher temperature made it a little bit 'fluffy'. The slower speed seemed to have the best result when printing without a raft.