I appreciate your troubleshooting. This would be way above my head without your help. I have been messing around a bit on signs that include arrows, and have found that your initial suggestion of adding a height modifier from N -0.1 to N +0.1 with 10 wall loops works in conjunction with changing the global setting of “Only one wall on top surfaces” set to “Not applied” or “topmost surface”. It doesn’t work completely, but it does work enough to get 2 good top layers on the sign background before the text is laid down. Yes, as you observed it adds extra wall loops around the perimeter, but that is ok because I have a raised border printed on top of these loops, at the same height level as the text.
Even though this is not a comprehensive solution, this is getting me by. The 3rd layer down in the sign’s body still has an arrow shape filled in separately from the rest of the background. Then it prints 2 layers over the complete sign body, then starts printing the text, border, and arrow. Really strange behavior.
If I am printing a sign with only text and border without the arrow, I don’t need to take such drastic measures. No height modifier is required… just changing the top surface setting. The result is that the 4th layer down in the sign body may have a few artifacts, but on top of that I get 3 full layers across the entire sign body.
Thanks again. Good enough to finish this project and move on until Bambu Lab addresses it more thoroughly.