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nasa / NASA-3D-Resources

Here you'll find a growing collection of 3D models, textures, and images from inside NASA.
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How do you print this item and get it to work? #30

Open flybd5 opened 4 years ago

flybd5 commented 4 years ago

Without clear parameters on how to print the ratchet wrench uplink.stl I find it impossible to get it to work correctly. Even at the finest resolution of my Flashforge Dreamer the ratchet mechanism will not budge. Has anybody gotten this to work correctly? Ever?

marsfan commented 4 years ago

@flybd5 Which model in particular is giving you trouble?

Disclaimer: I am not affiliated with NASA in any way, just someone hoping to help

flybd5 commented 4 years ago

The wrench. That it is a ratchet wrench is a myth and I don't see how any astronaut could have used this tool as such.

marsfan commented 4 years ago

I looked around at the wrench models, there are at least two that are ratchets, one is called uplink.stl and the other is called ratchet.fbx. As far as I can tell, non of them are designed to actually function as a wrench. They are more intended for use either as a decoration, or use within other 3D projects (like in a game).

flybd5 commented 4 years ago

Your information is incorrect. The one that I am referring to, the uplink.stl file, is documented on the NASA site as the actual design that was sent to the ISS.

https://nasa3d.arc.nasa.gov/detail/wrench-mis

marsfan commented 4 years ago

My apologies. I looked at the model again. I had things enabled incorrectly in my viewer. Looking at it now, I do indeed see that it looks like it should work as a ratchet. My suspicion is that the 3D printer is accidentally fusing the parts together somehow, whether it be due to the filament expanding, or the support structure getting in the way.

I did find some videos on youtube of people printing it (just search on YouTube NASA 3d printer wrench and there are many videos) https://www.youtube.com/watch?v=z5Iqr90Z_9Q https://www.youtube.com/watch?v=mVOjwYw9jt8

I do not have access to a 3D printer myself, so I cannot test it, but I would double check your supports settings.

flybd5 commented 4 years ago

I think you are missing my point. The NASA 3D resource web site should not simply throw the STL files out there with zero guidance, and people should not have to go dumpster diving on YouTube (that aussie video is damn near unintelligible) to figure out how to get the models to print correctly. The consequence of that is that people who want to try their hand at printing this will easily be discouraged, and it works against getting kids interested in all this.

ldo commented 4 years ago

My suspicion is, there is little more support for this repo than simply putting the models out there. They probably don’t have time (or budget) to do more than that. Look at the number of unaddressed issues right here for example.

flybd5 commented 4 years ago

Probably. But if they are not going to do it right, then they should just not do it at all...

ldo commented 4 years ago

Some of us would rather have the models.