I have a topographic terrain model (300 x 300 x 50) where I'm finding 'holes' in the top layers because there is insufficient infill support. I was using PrusaSlicer on OPXL5H, but I decided to wake up S3D (since the profiles are now available) and see if S3D can solve the problems. Because of the complexity of the model, the difference between 15% infill and 20% infill is almost double the time. I'm trying to find a way to have a more sparse infill for most of the model, and increase the infill support just beneath the top layers. Support Cubic didn't solve my problems. In PS my experiment was to print the first 2.5mm with grid 15%, and then switch to rectilinear 15%, which halves the spacing between support walls, Although this better supports the solid infill, the rectilinear or zig-zag infills lead to very rough infill as the nozzle continually crosses the prior layers.
So, now onto S3D to see if there are more or different solutions. I've tried multiple dense infill layers and layer expansion, but I'm still ending up with areas where the solid infill is printing 'on air'. I attached a screenshot. Any advice is appreciated.
This is my problem:
viewtopic.php?t=11638
