RE: Inside vertical wall defects, only one wall, possible causes?
I think the fact that 3D printing has some voodoo is something that is holding it back. It makes it more a hobby than a tool, as it tends not to value the creator's time, due to the higher defect rate. I find that many iterations are required, some at design level which I own, but others at the printer level. You'd think that for instance, that the slicer would be able to show the effects of elephant foot on bottom layer text printing, but it doesn't. The slicer shows a lovely print, but the part wasn't so lovely, as many of the gaps filled in. So I wasted 2 hours to find that out. Sigh.
Once again, thank you. Appreciate your insight and help!
RE: Inside vertical wall defects, only one wall, possible causes?
It's no more than any other hobby that evolved. When I first got into astrophotography many years ago I spent hours looking though an eyepiece toggling the telescope with a joystick to keep a guide star centered in order to capture an image on film. Hoping that after I had developed it I actually had something to work with. It was really fun when it was -5 outside. No software existed to process the image so had to do it in the darkroom. Now I just (from inside) use my iPad to point the scope, start taking images, go to bed and wake up the next morning with a perfect set of images (I'm simplifying things... however...) I would never go back to the days of film. When cars had carburetors and the engine ran too lean or too rich, you manually turned a jet screw. Now we have computer controlled injection.
Same with 3D printers, as they get more sophisticated/complicated the software has to abstract away that complication. So hence the "voodoo". There is no way I would go back to manually tramming the bed or worrying about the Bowden tube cracking in the hotend. Anyway, I would say my defect rate is a lot less than working with a manually trammed bed on a glass plate. That said, working with Marlin on the Core One doesn't seem all that different from my Ender 3 days.
As for displaying elephant's foot. The slicer isn't going to be able to predict that unless it knows what kind of build plate you are working with. Same with things like under-extrusion or pressure advance.
RE: Inside vertical wall defects, only one wall, possible causes?
Wondering if other slicers are any better. Not sure the grass is greener on the other side of the fence.
But I'd think that at least for PrusaSlicer on a Prusa product, one could tell the slicer what build plate is being used. For me, printing is a tool to get prototype parts and concepts made. I'd rather not have printing become a time consuming hobby. Have enough things going on to occupy my time! I do realize that some proficiency is required, and slowly that has happened, but it's been a little rocky. Since I don't print everyday, (or even every week) there are times when I need to relearn some trick. Seems like there's a lot of tricks, more than expected.
Still find it somewhat hard to believe that no one has solved the buldge problem. Lots of talk about it but nothing that actually seems to work (all the time) at least using PrusaSlicer on my designs. I tried many of the online suggestions, and frankly nothing worked particularly well, and most changes did nothing to ameliorate the line. It seems that few (in the slicer community) care all that much about dimensional constraints, or design aesthetics. As a designer, who doesn't want sloppy fits, or goobers in critical places, this seem to be a major omission, in my opinion. I'll stop now. Just venting. Maintaining dimensions is a pet peeve of mine.
Things are better than previously. My MK3S was kind of primitive. The MK4 was much better. The Core 1+ seems to be better than the MK4. That doesn't mean that the slicer shouldn't attempt to have a WYSIWYG mode that gives one a better idea of the final product. You'd think with all this AI stuff, that it could be used to make nearly perfect sliced models that take into account (all sorts of things, like) filament fling due to high acceleration rates. There's literally millions of models to train on. Seems like a good and worthy task for AI.