I am a real beginner, so apologise in advance if I am doing something so totally obviously wrong to you experts out there, but I have been trying for months, with hours and hours a week
to solve this issue without any progress,(I hate to add up the wasted time)
So pleeeeease please someone out there take pity and help me out. Tell me what I am doing wrong or better still help me fix it.
I am using a combination of Autocad 2017, Fusion 360 and Meshmixer. started with an imported scan of a very thin walled hollow object. Drew up a base ring for it to sit on and in inserted into fusion360, modded the ring extruding sections sections to create my required base with fixing lugs etc. The mesh was then "embedded" into the ring.
Everything looks fine, when I rotate the object about in all planes I see exactly what I want. perfect -so I thought last Autumn !
when I highlight the entire object and create an stl file for printing -again all seems ok
Using Cura 4.4 I can then open the file, land it on the base, again all looks great, even viewing through the build plate from underneath again all looks fine.
However as soon as it is sliced (again it performs this perfectly) then when I preview or even create the 3D print it this is where the problem shows up.
it fills a 5 layer thick sheet right across the entire open base at the level where the "mesh joins the solid ring into which it is embedded.
I have tried, combine in the Mesh tools of fusion360, even converted the Brep to a mesh and then combined, stitched, played around in Meshmixer, just about every conceivable way I can think of, to stop the Cura slicing stage adding this infill layer across the open neck of the mesh where it joins the extruded ring creation.
I know I am obviously doing something very wrong at some stage but I cannot find a solution.
Can anyone please please tell me how to solve this ?