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I'm trying to create an image of a board (wood, silver, or gold) that is carved with some ornamentation, e.g.

enter image description here

enter image description here

The purpose is to create an imaging that will later be cut with a laser machine. Therefore I first create the image in SVG, using inkscape (laser machine accept only VG), than I import the SVG in to Blender.

In Blender I grab only the ouyline, pull it down and create a Face (i.e. the board) and I use the rest of the part to carve through the board

I tried 2 method of carving through the Board - Knife Project, and Boolean Difference.

The methods works well when working with more simple structures, e.g: enter image description here

But than other structure gets distorted, like in the images above.

My questions are:

  1. Is there a better way to do it than the methods above?
  2. How can I avoid/or clean the distortion in the image?

Edit:

As explained in How can I model Gothic style windows? (credit to ardito comment)

You don't actually need to separate the board and than curved it, instead:

  1. open the SVG in InkScape and change the image to be filled (instead of only stroke)
  2. import the SVG to blender
  3. select the important mash and do ALT C and turn it into a mash
  4. now you can simply extrude it and create a 3D img with carved spaces. enter image description here

unfortunately it doesn't work on complicated image, such as this: enter image description here

import the SVG version of this image cause blender to convert some of the colors: i.e. black becomes transparent and vice versa.

If I tried to use the boolean difference than blender crashes.

the knife project seems to work - it took about 10 minutes to complete, now I need to delete about 100 faces - but this sometime fails to delete the correct face.

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  • $\begingroup$ I always use the first (see blender.stackexchange.com/questions/51792/…) , but you have to be sure to level all resulting vertices on Z. An example file would help to understand what's not working. $\endgroup$ – m.ardito Jan 30 '17 at 9:53
  • $\begingroup$ If by "distortion" you mean what I think you mean, you may want to remesh your object. See the accepted answer to this related question. $\endgroup$ – Mentalist Jan 30 '17 at 10:25
  • $\begingroup$ Unfortunaly SO doesn't let me attach files other than images $\endgroup$ – Elia Weiss Jan 30 '17 at 13:55
  • $\begingroup$ I use curves in blender, and for holes I find the best way is in the curve object first. Adding a filled shape to the main closed filled shape cause it to be unfilled inside that smaller shape - and if you can work entirely in a single curve object in edit mode in 2d curve, then you will have less problems with working out the mesh later. I also use the extrude function in the curve panel with bevel and resolution as a curve before converting to mesh. Much better results than trying to use complicated mesh boolean. $\endgroup$ – Craig D Jones Jan 31 '17 at 5:04
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As explained in How can I model Gothic style windows? (credit to ardito comment)

You don't actually need to separate the board and then curve it, instead:

  1. open the SVG in InkScape and change the image to be filled (instead of only stroke)
  2. import the SVG to blender
  3. select the important mesh and do Alt+C and turn it into a mesh
  4. now you can simply extrude it and create a 3D object with carved spaces. enter image description here

Note: if the curve is distorted then select it, in the Properties editor in the Object Data tab, on the right, find Extrude and increase it by 1.

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