Hi, I’m working on a project where the part to be printed is inverted, as this doesn’t require any supports, making the print faster and use less material. The problem that I have ran into is that the bottom surface isn’t smooth enough for me to use. I have enabled the ironing on Cura, and that does great for Z up horizontal surfaces, but does nothing for Z down horizontal surfaces. Ordinarily I’d just use the supports, but as this will be printed many times, support material will eat up too much filament driving up the cost of the final product. I’m currently running a brand new A250 that I have calibrated.
Here’s a scan of the bottom showing the roughness of the surface.
What steps can be done to make this smoother? Sanding or lacquering is not an options.