I use Blender for designs & remixes - 3D Print Toolbox and MeasureIt are useful plugins for 3D printing...highly recommended.
I have several Lulzbot Mini 1's, having started in 2016. I typically design for the stock nozzle (.5mm), but run a Micro SL .25mm toolhead for finer work & flexible filament.
If you have any questions about Blender or would like the .blend files for the different projects, let me know. If you ever find yourself in my city, I'd be happy to meet up!
If you like my Terraforming material, I did a fresh set of models for some friends (look for Gripmats, same group.)