Need help Joining Naked Edges

Rhino
1

I need some help troubleshooting a 3D print file issue. I worked on a site model with a sunken area, but when my friend opened the file to print, the sunken part wasn’t visible in the print preview. I used the show edges tools and it came up with multiple naked edges but im not sure how to close them.

Any advice would be appreciated!

Thanks in advance!

2

Hi Naik, Can you post an example file?

3

3Dprint.3dm (9.7 MB)
Hi yupp so i have the main site model and the part i want to print is the one in the square and the trimmed version is above it but at the scale of 1:250(the scale i need for the print) so you might have to zoom in a bit

4

Here i exploded and did a RebuildEdges with a tolerance of 1mm and ran the Join command.

image
image924×642 58.7 KB

There are a lot of gaps as well. ShrinkWrap (then QuadRemesh) seems appropriate here if that is an option.

image
image1474×1024 252 KB

5

Hi i did both the options but it doesnt seem to have made a difference as im still getting this as an error

image
image813×536 89.7 KB

6

hard to say from the image, it appears you have geometries on top of each other.

7

initally i had tried the explode and rebuild options too but it gave me this so im not sure if im doing it wrong

image
image1218×852 126 KB

8

Is that on the large or small version? If the larger you would need to change the tolerance appropriately

9

its on the smaller version

10

In your unaltered original file.

image
image926×680 71.8 KB

  1. exploded
  2. RebuildEdges
  3. set tolerance to 1
  4. join

image
image798×587 39.3 KB

8.18.25055.06001

11

okayy will give it a go also, would having these naked edges after the rebuild in the model affect the print? I’m wondering if that could be part of the issue. Any insights would be really helpful!

12

assuming your print requires a closed object any naked edges are going to be an issue (open polysurface)

13

Oh okay is there a way to close the last two edges?

image
image457×443 13.5 KB

14

this is an overhanging edge, trim with the surface below

image
image652×664 7.54 KB

this one will need to be redrawn

image
image800×537 9.46 KB

15

is there an easier way to rebuild it or would i have to trace over it again?
because the rebuild function wouldnt work right?

16

You could deal with these gaps before you do the initial rebuild.

Note that these are very tiny edges <1mm and the rebuild tolerance is 1mm

image
image898×555 5.25 KB

17

thankyou so much i dont have any naked edeges left! so i can just export this as an stl and send it for a print? or do i need to do any additional steps?

image
image1059×812 96.2 KB

18

Happy to help.

This can only be answered by looking at the documentation of your 3D printer.

19

run check or selbadobjects to see if the polysurface is good.

then you should be ready to export it as an .stl, and double-check by opening the .stl in rhino again.

1 Like
20

It says that there are no open faces in my rhino but when i convert it to stl it looks nothing like the rhino file i created

image
image929×836 9.8 KB