Hi, I exported the attached file to STL for a 3D printer, there are a ‘+’ and a’-’ on the part, but these didn’t seem to export. Also there are two holes which are dia 5.2mm, these ended up as 5mm holes.
I’m a beginner at Rhino, and this is my first project, if I import the stl file the + and - aren’t there, so I’ve obviously gone wrong somewhere.
Can anyone point me in the right direction, I’ve attached the rhino file as well as an image showing the holes and the symbols
K07479 Plastic Block iss5.zip (579.0 KB)
Please post the Rhino .3dm file as well…
The + and - are there, but they have been filled in with mesh.
Same thing with the holes, they appear to have a double layer or something…
Thanks for the reply, I’ve attached the original 3dm file.
KJC Plug Plastic Block-base issue 2.3dm (305.1 KB)
I created the mesh then did the hole changes and added the symbold using a 5.25mm cylinder and used booleandiff to make the hole bigger and also to create the + - symbols.
Is it best to do all the work on the solid then convert to mesh for exporting?
Hmm, is that the model you used for export? I don’t see the plus or minus symbols you showed in the .stl in your Rhino geometry. The smaller holes are indeed 5mm in diameter, not 5.2, and the model is open because the hole cylinders are missing the endcaps. I used a clipping plane to view inside the model, backsides of surfaces are colored in red.
Hi
I added the + and minus after the mesh was created - I drew them and extruded them into a solid, used booleandiff to create the impression
Same with increasing the hole diameter, I created the original 5mm hole using a curve extruded into a cylinder and then used booleandiff to create the blind hole. Once the mesh was created I used an extruded 5.25mm curve to create the 5.2mm hole in the mesh. Hope that all makes sense.
I didn’t realise you needed to cap the end of the blind holes.
That you did in Rhino using MeshBooleanDifference? Sounds like something was not successful and the difference pieces got exported with the model and fused into one mesh.
At this point I think I would just do those operations (+/- and hole diameter enlargement) as Rhino surface geometry and then export the result…
