I recently purchased an Evolution Kit. It was very easy to assemble and I was up and running in less than a day. I have been very pleased with the output. The prats have been accurate and very fast with the .7 mm extruder. I purchased the .4mm extruder as well but have yet to install it. The slicer software they provided with the tool was extremely old. I upgraded that right away. They areby tdevoe - General