Stacks and stacks of 3DOne Nano Face Shield V3.0

thingiverse

I'm posting my method of stacking these: https://www.thingiverse.com/thing:4271829. This is the method I use to generate the gcode you can customise from https://multifarious.link/. See pics and video of the end result https://www.thingiverse.com/make:791392. The following method is in case you have special extra printer settings, or your printer isn't compatible with the gcode from above link. This is what the SCAD files do (you can skip this section if you're happy with 0.2mm layers - use the attached STL files): I import the STL of the single headband into OpenSCAD and turn it 45 deg so it fits in 200x200. I then stack it up separated by 0.6mm, leaving space for a 0.2 gap and another 0.2 gap. Next, I export that as the first STL. Then, I clear the slate and import the single headband again into OpenSCAD. I take a 'cut=true' projection of the bottom of the headband, essentially getting the bottom cross section. I linear extrude that 0.2mm, resulting in a 0.2mm thick slice that's the same shape as the first layer. I stack those up to align with the middle of the gaps I left in the first STL and export that as a separate, second STL. I then import the first STL into Slic3r (https://slic3r.org/), using the latest master build. I configure my slicing settings as per normal, only making a couple of pertinent changes: - Using 0.2mm layer height because that's what I configured the gaps for. You could probably do everything with 0.25 from the start if you wanted. - Turning OFF detect thin walls, which makes for simple perimeters on the first and last layers of shields - better for laying down on support nicely. I select the object and go to settings, then load the second STL as a second part of the same object (this is the thin slices we're going to turn into 'support'). I now select that part and customise it's settings: basically want to print 'naked' infill. I turn off perimeters, top layers, and bottom layers; set infill extrusion width to a nice skinny 0.25mm; and set infill pattern to something that has nice coverage (trial and error inspecting the result).