Here’s a tarball of my first pass at completely overhauling these Dremel 3D45 Cura configs. In order to test them side-by-side, I changed the vendor name in all the references from “Dremel” to “DR”.

The most frustrating aspect of creating this set was that when Cura barfed on my configs, all it said in the logs was “Error when loading container: ‘int’ object is not iterable”. Nothing useful like the specific file or line number. The actual error is: machine definition files can only have values in the form {"default_value": ... } or {"value": ...}. I had copied actual values out of the material and quality files as part of my effort to maximize the use of inheritance and calculated values. And that’s a half-hour of my life I want back.

My primary motive for building these was being able to adjust acceleration, jerk, and speed, and have all the other related values get calculated relative to them. Dremel’s original configs didn’t do this, and the linked Github repo is pretty much copied directly from those, with ongoing cleanup.

My secondary motive was expanding the list of recommended quality settings. I’d added a bunch of different layer heights (0.15, 0.25, 0.35, 0.4, and adaptive), but they didn’t show up in the top-level menu; I always had to go into the custom view to select from them, and then I lost the convenient UI for infill and supports. Defining a whole new printer with custom settings fixed that, and also automatically keeps overrides (like z offset) when I switch settings.

As part of the fun, I tried to come up with names for the various quality settings that matched the scheme Dremel used. Theirs were Ultra (0.05mm), High (0.1mm), Medium (0.2mm), Low (0.3mm), and High Speed (0.34mm plus some speed overrides). I added Good (0.15mm), Okay (0.25mm), Coarse (0.35mm), Chunky (0.4mm), and Adaptive (0.05-0.35mm). All of them inherit my revised acceleration/jerk settings, so the estimated print times are within 5%.

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