Author Topic: How do you get 3d models for carving?  (Read 172 times)

Offline Gideon

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How do you get 3d models for carving?
« on: November 06, 2021, 15:53:11 pm »
Hi all, my name is Gideon and I'm new to this forum. The question I have been wondering lately is how do you get your 3d models for carving? I don't mean just download the 3d models you like from somewhere, but make them yourself. A few ways I can think of:
1) Using 3D modeling software, which is quite a serious problem because it is time-consuming, requires knowledge of the program, and high skill. In addition, it is desirable to have design skills and a little imagination, which I have a little trouble with ;) 
2) 3d scanning. This can be a great way to get great high-quality 3d models with minimal effort if you can get access to one of those 3D scanners for tens of thousands of bucks. Otherwise, budget 3d sensors have limited resolution and uneven quality. Nevertheless, their price speaks in their favor.
3) Photogrammetry. I can't say much about it since I haven't encountered it, but I've heard it can be a good option. Maybe the experts in the field can tell you a lot about it, the pros and cons.
4) Creating 3D bas-relief from photos, using different software. At the moment I am looking for information about this method and I think it is very promising for me.
What else could I be missing? Thanks in advance for the answers.

P.S I wasn't sure if I picked the right forum section for this post, sorry if I was wrong about that.


Offline dh42

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Re: How do you get 3d models for carving?
« Reply #1 on: November 09, 2021, 22:52:00 pm »
Hello

Welcome to the forum.

I can't talk about photogrametry, but the 3D scanner is not a "magic" tool that give immediately an usable object  >:(, most of the time there is a lot of job to get something usable .. and it can consume a lot of time (and needs a "muscle" PC)

for 4, you can explore the Surface from Bitmap CamBam tools ; it's also not magic, and the result is heavily dependent of the picture used to do the job ...

http://www.cambam.info/doc/dw/1.0.0/cad/draw-surface.html

an example ; the base picture



the result after engraving



++
David
« Last Edit: November 09, 2021, 22:55:16 pm by dh42 »

Offline EddyCurrent

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Re: How do you get 3d models for carving?
« Reply #2 on: November 09, 2021, 23:12:10 pm »
Have a read about photogrammetry here; https://cambamcnc.com/forum/index.php?topic=6969.msg56788#msg56788

Then try this software;  https://www.3dflow.net/3df-zephyr-free/
A phone camera seems to work well for this but of course you need a subject to photo. Plastic models etc. can be useful here.
 
« Last Edit: November 09, 2021, 23:15:35 pm by EddyCurrent »
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Offline dh42

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Re: How do you get 3d models for carving?
« Reply #3 on: November 09, 2021, 23:24:03 pm »
Quote
Then try this software;  https://www.3dflow.net/3df-zephyr-free/

But be sure your VGA card is a Nvidia, if not, it will not work  ;)

++
David