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.