ThreeCSG | A THREE | Service Mesh library

I am using EdgesGeometry to show the outer edges of the mesh as so : EdgesGeometry( geometry, thresholdAngle ).

This normally works as expected but after a using threeCSG to either 'subtract' or 'union' and then generating the EdgesGeometry on the resulting mesh I get various stray edges appear on coplanar faces, even if I increase the 'thresholdAngle' to say '180 degrees', they remain.

This is what happens -

Here's my code: (a & b are the meshes of the box geometry)

I'm experimenting with the ThreeCSG library and am attempting to swap out the sphere or normal geometry for a custom made Shape, in this case the heart shape from the 3js examples.

Unfortunately I'm getting an odd result on the side that faces the camera. Here's a code sample:

I'm using THREE.Plane to clip my STL model.

Following the example here:

http://learningthreejs.com/blog/2011/12/10/constructive-solid-geometry-with-csg-js/

And using Three.js with https://github.com/chandlerprall/ThreeCSG, I'm trying to do 3D boolean operations on nodes from the model. Like for example if I have a wall with a window, I want to do invert() on that to get just the window.

I have a function that returns all the vertices of the polygons of a node, here's an example of vertices of an object without holes https://pastebin.com/8dhYzPwE.

I'm using ThreeCSG like this:

I'm trying to engrave some text on a surface using Three.js. I've achieved it using csg.js and ThreeCSG and it works perfect, the result is really good but the problem is it takes a lot of time. On my PC it takes about 30 seconds to engrave the word Hello.

Searching for other solution I found this site. They make custom jewelry and you can engrave text on it and the time it takes to engrave the text is really short! So I assume they are not using csg.js. What other technique can be used to achieve this result?

I though about using bump maps, I should generate a bump map for each letter but I don't know if that's the correct approach.

I've taken a look at the Clipping examples in the Threejs site, and the ThreeCSG operations, but I am not able to find an example that has "both".

To be more specific, I require a PlaneGeometry of PlaneBufferGeometry that applies a CSG operation as smooth as a Clipping, but this PlaneGeometry could be moving, changing its position and orientation.

As an example, a Sphere and a Plane are on the scene, the Plane starts facing in Z and is spinning in Y, cutting one side of the sphere at all times, but the plane could be a box or any other object.

Is it possible?