GregValiant 1,342
If you are using Windows, it has MS 3D Builder included. I have found that it isn't real intuitive, but for simple things like cutting an STL it works pretty good. Open the helmet, bring in a cube from the menu, size and move the cube till you like it, and with the cube selected, and the helmet NOT selected use the "subtract" tool. You will get a nice clean edge. Then do a Save As for the new model.
MS 3D Builder is also pretty good at repairing problems in models.
It looks like Mesh Lab simply erased a bunch of triangles without sealing the gaps. You want a boolean operation there (Subtract, Union, or Intersection).
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GregValiant 1,342
That is a bad cut. Those jagged edges look a lot like open seams to me. That would confuse Cura and you will get wierdness in the slice.
Instead of altering the model, go into the Cura Preferences and turn off "Automatically drop models to build plate". Then in the "Move" tool dialog set the Z to a negative number to sink the helmet into the Cura build plate by whatever 90% of your model height is so only the top 10% is exposed. It should slice OK like that and you wouldn't have those jaggies to deal with. The support should generate OK as well.
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ChaosLord10 0
Thank you, I'll try that. I've only been using Cura for a few months and am still learning a lot of the functions. As far as MeshLabgoes, only a few days. Still trying to make heads or tails of that lol. I'm planning to try to tackle it tonight after a Vase I've been working on is finished. I'll most likely post the finished print and final product whenever I have the time to. I was hoping to just be able to polish the whole thing after assembly, but with a seam like that, I may have to sand and paint it before I put in the visor. Thanks again.
Edit: Also, in my defense, the jagged edge was created by MeshLab. I just have no clue how to fix it yet. 😅
Edited by ChaosLord10Link to post
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