Underextrusion, retraction, extra prime and coasting test 0.4mm Nozzle (REMIX)

thingiverse

This is a remix based on Brilliant Name's "Underextrusion, retraction, extra prime and coasting test" (https://www.thingiverse.com/thing:3229413/). The original model is designed for a 0.4mm nozzle, and this is as well (with 0.8mm walls). The primary change from the original is a more substantial brim for the small posts, which are also connected to the model so they should have better adhesion. I used this to reduce some blobbing I'm seeing using PETG and ABS. First however, it is important to calibrate e-steps, temp, flow, and retraction as best as possible. Then I used this model to tune the coasting. I noted that for some reason in Cura, the default coasting was set for a 0.4mm nozzle (0.064mm^3) which is a good starting point. I would first however calibrate retraction, then coasting. I did a write up on my blog with pics of each test which was used to tune things for the PETG I was using (http://www.mystoopidstuff.com/blog/retraction-and-coasting-one-pulls-the-other-one-pushes). In a nutshell, I suggest tuning retraction first, and then consider coasting to be a variable to polish things up with. The post was based on a 0.6mm nozzle and I used my other remix (https://www.thingiverse.com/thing:4974967) which is designed for 0.6mm nozzles in the testing on my blog. Thanks to Brilliant_Name for the great original model (https://www.thingiverse.com/thing:3229413/remixes) and methods for calibrating, it can be a timesaver and does not take much material.