Impossible challenge?

Does it also create an STL, SVG or other usable files that we can massage in another CAD/drawing software?

I do not believe that is within the current or future scope of the application, which means in the context of, say, developing a model of this door to be used in various contexts, I wouldnā€™t consider it my first choice of tool. On the other hand, if I managed to model the door and had an STL or heightmap graphic, PixelCNC would likely be the software Iā€™d turn to for the CAM.

(Oh, and it occurred to me after posting that if I just make my own edited copy of the ā€œGRBL (Metric).txtā€ post, I can likely just modify the prefix block and tool change block to make it trivial to cut the output G-code files into single-tool pieces.)

Didnā€™t you write an extension to import GCode into Inkscape?

Yes, but since the result is inherently two-dimensional, itā€™s generally more appropriate to flat or ā€œ2.5Dā€ files. A simple 2D design (e.g. laser cutting or a simple pockets-and-profiles design) can often be almost perfectly reconstituted, but flattening a full 3D carve into an SVG tends to result in a minuscule signal-to-noise ratio for the resulting path data.

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Well a smart guy like you should be able to find a way to go from GCode to STL! :wink:

I believe you can export an STL from G-Code imported into and simulated in CAMotics.

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Wow, I will have to check this out.

ā€œExport cut workpiece to STL file.ā€ is indeed right there in the CAMotics features list. You wouldnā€™t happen to have heard of any convenient way of turning an STL file into a heightmap image, eh? Thatā€™s the missing step Iā€™ve run into multiple times. (The standard reply seems to be something like ā€œFirst, install and learn Blender, and then itā€™s easy.ā€)

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Answer with some options at: https://stackoverflow.com/questions/17932107/converting-stl-file-to-an-image

I think with:

  • A better photo
  • Someone with some photo editing experience
  • Someone with some 3D rendering experience
  • Someone with some time to dedicate

You could get close by creating a heightmap (depthmap?).

Here is the extent of my efforts: Well, the STL was too big to compress and add, but thatā€™s easily generated if youā€™d go that route, and I donā€™t know that the one I did is valuable in any way.
Hereā€™s the heightmap image: Well, BMPs arenā€™t allowed, so Iā€™ll zip it.
test2.zip (1.1 MB)

I used software called Materialize to create the heightmap (no idea what I was doing).

STL in V-Carve:

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There was a utility mentioned that takes the output of PixelCNC and can generate an STL. Have not tried either.

Thanks for the mention. Iā€™m making slow progress as Iā€™m learning the tool (blender 2.8) but I enjoy learning new things and am having fun.

My main difficulty is with the pictures I have available. If Iā€™d taken them for modeling purposes Iā€™d have tried to get front-on shots to reduce perspective and have even lighting. Keeping them in focus throughout would be nice too. The pictures I have to model from donā€™t have any of those things going for them. I think any software that tried to convert them wouldnā€™t work well in my case.

Iā€™m working on the small part of the pillar just below the base now. I canā€™t even see for sure whatā€™s in the pictures. I have a good guess there are pairs of gothic arches with something under that balls that separate them. I may make up that something. Iā€™ve looked online for similar stuff and canā€™t find anything there to help. Thatā€™s the kind of things that bug me since Iā€™m a Type A person and a little OCD and getting it ā€œrightā€ is important to me.

I updated my progress shots in the other thread. Thanks

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Modeling this in Blender is definitely an option, and probably a good way to learn how to use it (I havenā€™t yet). But another option would be to use Vectric Aspire, although itā€™s not free like Blender.

This tutorial video goes through modeling an oak branch with leaves and acorns from a hand sketch.

One advantage to this is that the resulting model would be ready for creating toolpaths in Aspire.

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