I enjoy tinkering and doing hands-on projects, so I’ve been looking more into upgrade options recently. While browsing around, I came across a Prusa MINI+ Dual Z-axis upgrade kit on Printables, with a full parts list and an assembly video. It caught my attention mostly because I’ve been enjoying DIY projects lately.
What would dual Z axes on the mini achieve? The existing cantilever design is plenty stiff in my experience, I’m skeptical you’ll get any significant increase in print quality or speed, and I suspect at the cost of having to fiddle around a lot tuning settings to get it back to where it started as the existing firmware has a lot of tuning for the mechanical behavior of the exisiting design. So, if you’re not happy with the mini as is, I would be looking at a different printer rather than a dual Z mod.
Having myself indulged in the temptations of homebrew 3D printer mods, I came to realize that not all mods out there actually improve performance, especially this type of serious mechanical overhaul of what is already a fairly sophisticated and optimized design. A decent part of the mini’s secret sauce is in the firmware, and this is going to break that.