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slic3r / Slic3r

Open Source toolpath generator for 3D printers
https://slic3r.org/
GNU Affero General Public License v3.0
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Holes and details in STL missing from sliced part #845

Closed kefir- closed 11 years ago

kefir- commented 11 years ago

I sliced an stl using Slic3r 0.9.7, and details have disappeared. I got a warning, but other tools such as SFACT slice this part correctly. It's a motor cog, and it seems the main shaft hole, the holding bolt's hole, and all the teeth just disappear during slicing.

Here's the stl and the gcode:

http://ketil.froyn.name/motorcog.stl http://ketil.froyn.name/motorcog.gcode

alranel commented 11 years ago

Broken STL.

If Slic3r tells you have to repair it, believe it or not, you have to repair it.

duttonw commented 11 years ago

I had an stl that looked right in Meshlab but would not print. It gave me errors. In netfab it was red which was didn't really tell me alot. After some research I found out the red means inverted and is in negative space. After inverting normals it worked. Stl models can also have pieces that are partly inverted.

Regards

William d.

On 06/12/2012, at 7:43 AM, kefir- notifications@github.com wrote:

It looks right in Blender, and it slices fine in SFACT. Could you say anything about what is wrong with it? I'm not asking you to debug my stl, I'm just trying to understand what's going on.

— Reply to this email directly or view it on GitHubhttps://github.com/alexrj/Slic3r/issues/845#issuecomment-11061933.

kefir- commented 11 years ago

Thanks! I eventually figured this wasn't the correct place to ask questions like this, so I removed my question. Using some other sources I discovered that inverted and missing faces was the problem. Badly broken STL.

alranel commented 11 years ago

@kefir-, Netfabb Studio Basic is my tool of choice for troubleshooting and repairing STL files. Most of them suffer from inverted facets and little holes, so they can be repaired very easily.