Defeated by a wood insert
I am trying make a mixed media box using wood as both the floor of the box and as a lid that slides out. My first 4 prototypes printed flawlessly but when switching filament to the color everyone liked it failed and then continued to fail and I realized I was lucky that the PLA was sticking to the first wood insert on my prototypes. The slicer has the layer after the pause begin on what it sees as an overhang but is directly on top of the wood.
I have tried several methods to avoid the layer from beginning the print into what the slicer sees as thin air. I even used AI search which had me try seam position, seam paint tool, layer height modifiers (several), inserting custom GCode, among others. Frustratingly it does not do this on the second wood insert. It starts the layer connecting to the previous layer then goes out over the overhang.
I feel like I am missing something obvious and decided to ask for help when I started moving lines of GCode around to get the result I am after, I had to stop and think maybe it is time to ask people smarter than me to see what they think before I break something. Now that I have started I will absolutely still mess with the GCode as it is quite fun but I have 2 days to make 50 of these I'll have to save that for later.
Please let me know if anyone has any suggestions or if more information is needed.
Thank you.
RE: Defeated by a wood insert
Some ideas. Example .3mf attached.
Add a modifier block, size it to the part size and make it about .2-.4mm thick. Make sure the Z position covers the first layer after adding the insert. Add profile modifier so there are many profiles on the layer, until it overlaps the part. Also enable External Layers First. This should start outside and work in. You may also add infil to the modifier block set to 100% and concentric. It will start on the outside and work inward.