3D printing achieves wooden grain(need a little 3D modeling)

I last post a topic about to add wood stripes on your model, with a modifier.
https://forum.bambulab.com/t/3d-printing-achieves-wooden-grain-no-need-3d-modeling/121021?u=pandan

This method makes the printing time increased to 3 or 4 times the original. The amount of materials used is also 4 times. It also makes printing harder to success.
Now I find a way to improve this, but need a little modeling skills.

In short, the approach to problem-solving is Make a smaller model, and boolean difference with annual ring modifier, then slicing.

This time I use a cube for demonstration

  1. make a 606060 cube.
  2. make a 595959 cube, move it to inside the bigger one.
  3. select the modifier, click mesh boolean-difference
  4. Subtract from the modifier, substract with the 595959 cube
  5. waiting… the boolean operation may lead to some mistake, like non-manifold edges, try to fix it, if failed to fix, it also doesn’t matter.
  6. keep the parameter refered to the last topic, top layer 90degree rotate, fuzzy skin to the ex-walls.
  7. slice plate
  8. watch for result

Here are some illustractive pictures:





Now you see, the time change from 20h to 6h!

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So, you may need to make change with the origin model. Inward offset it with about 1mm distance. This step need some modeling skills.
Import it and doing boolean operation. Save much more time!

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Latest information, due to the frequent failure of the boolean function for complex meshes, this method cannot be called perfect, it still needs to improvement.
The Tree annual rings mesh is very complex, with a simple model may lead to boolean failing. If model is also complex, boolean operations are almost certain to fail.

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This is the type of content I would love to see more of posted in the Community instead of just model promotions.

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