Simplify3D User Forum

so ive got this piece im trying to print, as far as i can tell, i have eliminated all faces on theo original model, and it is one solid model, where one of the features intersects (a cylinder attached to a cube) its printing it with separate lines where the perimeters meet instead of extending the infill between the two features, (this piece bears a sheer force of about 2-3 pounds) so the fact the meeting surfaces are parallel lines makes it prone to failure because its all dependent on how well the layers are adhering laterally




arow is pointing to the location in question

is this an issue with the slicer behavior, like a setting that i need to check or uncheck? or is it the model itself?

It's hard to guess without being able to look at the file. Can you attach your factory file?

Try the solution I advised here: viewtopic.php?f=9&t=5691&p=24675&hilit= ... ted#p24675

brian442 wrote:It's hard to guess without being able to look at the file. Can you attach your factory file?

here you go

dkightley wrote:Try the solution I advised here: viewtopic.php?f=9&t=5691&p=24675&hilit= ... ted#p24675

tried that, all it did was create a separate model with the secondary piece being its own thing.. meaning it separated the parts at exactly the place im having a problem with

You have 2 separate shells at that location that don't seem to be booleaned together properly. So that's why they are printing like that. There's actually also a lot of other issues with the mesh too, so you might want to start by repairing the file or fixing it in your CAD package before trying to slice it.

tried that, all it did was create a separate model with the secondary piece being its own thing.. meaning it separated the parts at exactly the place im having a problem with

I would try it again....but this time select the boss as a separate part, double-click it, and change the X offset to 124.99. It will combine the two together as I advised.

The problem is that the two meshes don't actually interleave....they sit side by side!! Which is why they'll never be treated as one solid.

dkightley wrote:

tried that, all it did was create a separate model with the secondary piece being its own thing.. meaning it separated the parts at exactly the place im having a problem with

I would try it again....but this time select the boss as a separate part, double-click it, and change the X offset to 124.99. It will combine the two together as I advised.

The problem is that the two meshes don't actually interleave....they sit side by side!! Which is why they'll never be treated as one solid.

i must have missed that part from the linked thread, sorry about that, ill give it a shot, not like its hard to find out whether or not it will work with print preview, personally im a bit confused as to why its coming across as 2 parts, i selected "merge all objects" when i exported it, and reviewing the model it all moves as one unit.. that's why i assumed it was slicer behaviour as opposed to the model

brian442 wrote:You have 2 separate shells at that location that don't seem to be booleaned together properly. So that's why they are printing like that. There's actually also a lot of other issues with the mesh too, so you might want to start by repairing the file or fixing it in your CAD package before trying to slice it.

what other issues did you see with the mesh? the overlapping between the two parts was intentional actually. (aside from the extra triangles that get added during the subtraction process for no reason i can tell)

also, i took the time to redo the original model, i extended the cylinder to nest inside the cube, and was a bit more mindful of the facing, and i ran a test on it, and it created the shell correctly for all parts.. maybe ill just chalk it up to a learning experience (me and modeling.. we are not friends)

dkightley wrote:

tried that, all it did was create a separate model with the secondary piece being its own thing.. meaning it separated the parts at exactly the place im having a problem with

I would try it again....but this time select the boss as a separate part, double-click it, and change the X offset to 124.99. It will combine the two together as I advised.

The problem is that the two meshes don't actually interleave....they sit side by side!! Which is why they'll never be treated as one solid.

y offset, subtracted it to 79mm even (minus .35mm) and print previewed it.. one solid mesh, thank you for your help!

TrackerF16 wrote:confused as to why its coming across as 2 parts, i selected "merge all objects" when i exported it, and reviewing the model it all moves as one unit.. that's why i assumed it was slicer behaviour as opposed to the model

STL file format allows for multiple solids inside a single file. When you "merge all objects" what happens in most cases is that every object is separately stored in to the same stl file. They are not merged by creating the union of them but rather just stored in single file with proper positions so they look like a single object. the "split parts" / "split meshes" function in slicers, mesh editors, mesh repair software etc will split them into separate objects. If you save the file as ASCII STL you can see the structure easily if you open the file in txt editor, each object will have it's own body section in the file.