stl for 3d printing

[Hope]

Hello everyone,

I am recently exporting parts to .stl for 3d printing but often create 5.0 produces files with open surfaces (depending on the complexity of the component). do you have any advice, procedure you use to maximize the chance of successful exporting closed geometry and the quality of exported geometry?

I don't have a specific file to be able to share but I don't want to be back working until night only to get some closed geometries and I would like to know your opinion and experiences about it.

thanks and good day.

 

[freexf]

I would blame the cad model before any export.
if the model is not healthy (contains geometry errors), it will be logical to have a non-conform export output.
Otherwise, you would try the chord-heigth, control-angle, step-size parameters.

 

[320i S]

the starting model is solid?, because I never happened that a solid model, in stl is open with missing surfaces.

then as it says freexf, you can play on the export parameters.

 

[Hope]

hello and apologize for the quick answer. thanks for the answers.

I would blame the cad model before any export.

I too, but given the always narrow timings who model is doing miracles lately and I don't want to burden his work. I would like to understand if I can do something during export before requesting changes to cad.

the starting model is solid?, because I never happened that a solid model, in stl is open with missing surfaces.

Yes, the models are solid. but often have "singularity" such as very small surfaces, especially where the rays intersect.

what controls do you do before exporting geometry? I could change the export parameters but I wouldn't want geometry to change too much. in the end we print in 3d to create control masks. if I change too much files to print I lose precision.

Thanks again.

 

[320i S]

hello and apologize for the quick answer. thanks for the answers.



I too, but given the always narrow timings who model is doing miracles lately and I don't want to burden his work. I would like to understand if I can do something during export before requesting changes to cad.



Yes, the models are solid. but often have "singularity" such as very small surfaces, especially where the rays intersect.

what controls do you do before exporting geometry? I could change the export parameters but I wouldn't want geometry to change too much. in the end we print in 3d to create control masks. if I change too much files to print I lose precision.

Thanks again.

rapid control could be export and reimport in step by step, normally the surface closing problems should arise there.
But if it is a model made completely with creo, it seems quite strange to me.

if however it is an imported model, a "direct" with the import data doctor, and its specific command "control geometry"; at that point all signals of edges in tangency (although apparently closed), I would go to check them and when you are in front of unperfect surfaces, I would go to remake them.

 

[Hope]

thank you for the answer 320i s, I can actually do as advice you. Export from creo and remount, maybe in another software to see if geometry is opened cleanly. I used import data doctor in the past to repair files, but even when I fixed them, after export the customer saw them open or with missing surfaces. It's definitely a great tool to work inside the creo.

Thanks again.