Wierd Holes in Print

[Tmarino]

Attached are snippets from the output of a model previewed in both S3D and Flashprint. Notice the open holes and uneve fill in the S3D snippet as comared to the FP infill. I have tried everything in S3D and these areas are always a mess.
I even ran the model through the latest Cura slicer and the results are good. As it appears that there is no more factory support for this product, I figured I would post it to see if any users had an idea as to what is going wrong.

I have verified the stl model is good so that's not an issue.

Any thoughts would be helpful.

Thanks

[dkightley]

What I see is two different 3D graphics rendering of very similar slicer generated objects. What look like "holes" on the S3d render is a colour-changed layer below....wheras the other render does not have the same type of shading. You could also say that S3D prints the edge of the thumbnail smoother!!

Where you have curved surfaces that are close to level, you will always get the "staircase" effect caused by the model being made up of constant thickness layers.

Have you printed the model using the three slicers you mentioned?? Or are you just assuming the preview from each slicer will represent what the printed part will actually be like?

[Tmarino]

The top preview is FlashPrint and the bottom is the S3D that was printed just as it shows with gapping holes in the knuckle areas just as shown in the preview. I don't use FlashPrint as the FF Creator Pro cam with S3D so that's all I have ever used.
I understand about the transition from curve to level but I wold have thought the software would be compensating and assuring that there is no holes in the print. These areas become very ugly and make th print unusable.

Those areas in the knuckle are open and the filiment just drops inside creating a mess. Surely this isn't the only model to have curved surfaces transitioning into level and back that has been printed.

Attached is the preview from Cura and if you notice the slicer has filled in the areas beneath the curved to level transitions to prevent and gaping holes. I did nothing to the setup in Cura, just loaded the same model and sliced it to preview.

[zemlin]

Have you printed the model using the three slicers you mentioned?? Or are you just assuming the preview from each slicer will represent what the printed part will actually be like?

I tend to agree with Doug - you're reading a lot into the preview, and there are clearly vastly different rendering methods being used by the different software packages.

[gwhite]

He said he gets the holes when he prints it. From looking at things, I would say his infil percentage it too low, and he doesn't have enough outer layers. I'm guessing his top surface is basically bridging over the large holes in the infil, and falling in where he sees holes.

[Tmarino]

gwhite, exactly right!

I'll try adjusting infill and the Perimeter shell to see what happens. The one good thing with S3D, you get what the preview shows and I proved that on the first go round.
I guess i could use the Process function and adjust the print parameters for this are of the print assuming I have luck with the above changes.

Thanks and stay tuned.

[Tmarino]

Using gwhite's theory, I increased the infill to 100% and the Outer Perimeters to 5 just to see what the effect would be. As you can see from the screen shot, I have NO open aeas underneath in the knuckle areas and it should fill in OK.

As stated, this may be agood area to use the Process function as I can change the fill parameters for just the area I need it to eliminate the holes. Although I have never used the Process prior, I do have a grasp on how to do it and this will be my first use.

Thanks again for the assistance and comments as all are appreciated.

Tom