Venus 3D Model is Here!

Email yourself a 10% off coupon

Send

Coupon sent! Check your email

posted in Community by globemaker

You may get a 3D model of Venus that I made. Download the outside surface in one file, the inside of the shell is defined in the second file so it is a hollow 5.5 inch globe with mountains heights exaggerated 150 times and low fog.

If you want Earth globes .stl files, pay me for CAD design of your files. If you want Venus: it is a free 3D model !

9 years, 9 months ago

globemaker - Here are the links...

Venus_out_55.stl is linked here for 100 Megabyte file of outside:
https://drive.google.com/file/d/0Bye97v1hDDEzVXllVHhWWkZrTnc/edit?usp=sharing

Venus_in_55.stl is linked here for 100 Megabyte file of inside:
https://drive.google.com/file/d/0Bye97v1hDDEzRFZ0dVdHUTVjLWc/edit?usp=sharing

9 years, 9 months ago

elpulpo - Is that Venus de Milo or Botticelli's Venus ascending?? :-)

9 years, 9 months ago

mhagan - Those are some really big files. Before I crash my computer opening them, how many triangles are each of these? Are they ASCII or binary?

9 years, 9 months ago

globemaker - Hello mhagan, the Venus model has twp million triangles. It is binary .stl format. I can also produce smaller models of Venus, if you tell me a maximum size. Also, is it permissible to send two files for the model to one printer? I designed the globes as shells with the "out" file for the surface, the "in" file is 1/8th of an inch smaller to make a shell.
Do printers need a thin shell or a solid ball?

9 years, 9 months ago

show 3 more comments

mhagan - ok, Most printers will not interepret the second, smaller part as in internal shell. They almost always will see it as a separate part that also needs to be filled. To make the printer see this as hollow you would need to do a Boolean subtraction of the smaller part from the larger part. Second, Most printers do not have anywhere close to the necessary resolution so make all those triangles worth it. For a part of that size using FDM like most people have here I would suggest a maximum triangle count of 200k.

9 years, 9 months ago

globemaker - Hi mhagan, I will prepare a Venus globe with under 200k triangles.
The .stl file format includes the "facet normal" information with each triangle. Modern CAD systems should be able to use the "facet normal" vector to define the "inside" of the material. I used two files. The inner file uses facet normal vectors that point away from the material. The outer file uses facet normals in the opposite direction as the inner file. It would be appalling to learn that 3D printers ignore the .stl file "facet normal". That boolean idea of your is also workable as a hack.

9 years, 9 months ago

mhagan - The problem is that you have it in 2 files. Most slicing programs would see each one as a separate part. 99% of the time this is good, but on the smaller sphere, the software would notice that all of the normals are facing and and "fix" them by flipping the normals.

The boolean is not a "workable hack" as you put it, but the established way of doing things when dealing with 3D printers of all price points. Surely you can see how having things in one file is much more convenient. There would be no issues with mis aligning the smaller part or having the normals flipped when bringing the part into the software.

9 years, 9 months ago