Creating holes in an object's perimeter?
I want to pump water through a 3D print using a gyroid infill so that the fluid can pass through. But I'm having trouble getting prusa slicer to put a hole into the object's perimeter. I have tried modifiers a little, but I must be doing something wrong. When I add a modifier shape with no outer layers, I still get a perimeter between the modifier and the main object.
How should I do this?
RE:
Can you save your Slicer project, zip the resulting 3mf-file and post it? And describe what exactly you want to achieve.
If at first you don't succeed, skydiving is not for you.
Find out why this is pinned in the general section!
Infill is not a void. Your part, if sliceable, must be a closed object...
So model your pathway and any baffles, gyroid or otherwise, so that the closed object is the shell of your part.
Cheerio,
RE: Creating holes in an object's perimeter?
@stcrowley
Is this the kind of thing your looking for? example
RE: Creating holes in an object's perimeter?
@snuffleupagus
Yeah, that's really close. I was able to replicate your example and get what I was looking for. To sum it up, I should create a copy of the shape inside the main shape, but without perimeters, then add the holes as parts without perimeters and without infill?
RE: Creating holes in an object's perimeter?
The problem with that example is that the perimeter count is not controlled by your settings any more but by the relative size of the modifiers. It will only work for a relatively limited complexity of shape too. A drill bit through the wall though works on everything and is much simpler 🙂
RE: Creating holes in an object's perimeter?
The problem with that example
There is no problem with the example, and you might notice that no modifiers were used to make the example, as well the control is provided via scaling. You have full control over the wall thickness and any other aspect of the example, however the control has shifted to different areas of PrusaSlicer. If the shape is complex and needs more control then this can be provided via your modeling program. The rest of the control comes from a good understanding of PrusaSlicer.
RE: Creating holes in an object's perimeter?
Change the perimeter count to 3 or higher and it doesn't change the actual perimeters. All perimeter thickness has to be done with scaling the objects as you later mention in your last post. For a beginner that is not obvious. While that works with relatively simple shapes like the primitives used in your example it does not work for complex shapes.
People often forget the maxim of keep things simple. If you want access to the interior of a shell, drill a hole. That works on every thing.
RE: Creating holes in an object's perimeter?
@neophyl
I 100% agree this is not for beginners where complex shapes are concerned. For a vessel that holds a liquid with an in and out, my take on this was it would be simple enough for a newer users to understand. It does seem this person understood.
Relative to more complex objects it is as simple as a Boolean and a Shell and you can produce your subtractive part ready to provide a consistent perimeter count for a more complex model, I have done this several times.
I agree with keeping things simple, in this instance I felt it was so. Your opinion is also valid.