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Ming0815

Propeller Print Problem

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Hello everyone

I am a newcomer who has just used the ultimaker cura 3.0. Recently my research project required me to print some propeller models. There are my shaft holes and keyholes in my propeller model. These can be seen in the picture. But when using the software, I found that the shaft hole in the propeller could not be printed. It is filled. Can anyone help me solve this problem or make some suggestions? Is it a problem with my parameter settings? My model is imported using the STL. file.

 

Thanks

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UMS5_PL-No-5-V3-assemble.stl

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Hi, I looked at your model using the FreeCAD analyzer and it said it had a self-intersection which was in the hub area. I asked FreeCAD to fix it but the model still didn't slice right. Anyway, I think the problem is with the model rather than with Cura or the settings.

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It is the model. I took it into 3DSMAX and it found open edges.

Here is the STL check modifier that finds the errors and allows you to directly affect them. You can see that the Edges are the source of the errors due to being open edges and not watertight.

STLCheckErrors.thumb.jpg.1474e4c3b1ea15c33fd7abd4b60d30d6.jpg

And here, I put on a modifier that allows access to the parts that that need to be fixed. I had to greatly color grade the image to make the red stand out, that is why the whole image looks different.

RedEdgesOpen.thumb.jpg.d4ba84130688f95337f0d487ff9f51d7.jpg

I am not sure what package you used, but making things watertight and checking them like @smartavionicsdid is important. All Cura was trying to do is cap an open set of edges that happened to make a cylinder over everything in between and flip out its view of frontface and backface o0rientation of normals and therefore, the loss details.

 

Fixed File:

FixedProp.STL

 

Sliced all oakely  dokely.....

SlicedProp.thumb.jpg.57688befac6630e5eaee10ad26f2fbea.jpg

 

Now, just for my edification, is this deign not called a 'screw' instead of a propeller, asks the old Navy man......

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Propellors are the most difficult thing I ever printed with my UM2.  The UM3 with it's PVA support was so helpful.  For the UM2 I would design outer walls on the outer edge of the blades only and then after it's printed I cut the outer supports off with a dremel.  A lot of work.

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