My aim is to use Bambu Studio for most of my designs, even though I know I can use other more capable apps, and for this particular issue I tried creating a box with rounded corners, so I did these steps:
Add part > rounded rectangle, set the size to 50mm on all axis
Add negative part > rounded rectangle, set the size to 46mm on all axis
Moved the inner negative part upwards, so it broke through the top (leaving a way too thick bottom )
Sliced the model, and went down some layers, and got the image below
As can be seen in the image, the corners aren’t “perfect”. Is it possible to get the slicer to make “perfect” corner without that internal solid infill (or gap fill in slightly different sizes)? Can I make the wall with a given set of walls?
I’ve seen, but never used vase mode in some slicers, is something similar available in Bambu Studio to achieve my goal of a given number of walls?
This might be a variant of the Rectangle with rounded corners where they want to set the radius of a rounded rectangle, which seems hard to do…
It is! Your issue is that the scaled version of the rounded rectangle has corner radii not parallel to the outer ones.
I’ve whipped up an example in Onshape: The correct way is to have an offset between the outer and the inner wall (here 2mm). If the outer corners have a 5mm radius, and the wall is 2mm thick, then the inner radius has to be 5mm - 2mm = 3mm.
The way with scaling, the inner radius will be also just scaled, so when scaling a 50mm rectangle to 46mm, any 5mm corner will be scaled to 4.6mm – and that’s no longer parallel.
Studio provides useful tools for minor changes to a model. They are kind of like the screwdriver and pliers I keep in the kitchen drawer for simple repairs. Handy, but limited. If I’m making something from scratch, I want access to all the tools in the workshop so I am not restricted by the tools.
Studio is really the wrong tool to make your model because it does not let you control that corner radius.
Use a better design program which lets you set your own radius, or which will create the correct offset automatically.
OR
Consider the strengthened corners as a feature instead of a bug.
You answered your question in your opening line. Or… loosely translated… don’t bring a pocket knife to a gunfight. Use the correct tool. If you’re serious about design, the slicer is not that tool. Refer to the link you included in your post, it is one of many that covers this topic.
Many of my designs are practical household items, where the simplicity of the studio can make it a lot faster to prototype.
I do see how the other tools are more valueable/capable/…, but for fast prototyping I actually kind of enjoy the simple building blocks that the studio has to offer.
It is an extremely rare occurence that I disagree with @Olias but using Studio for CAD is in no way like
It is much more like going scuba diving with a parachute. Or, skydiving with scuba gear.
However, it is very laudable to have CAM in mind when doing CAD. To get better corners, you’d probably want to use the Arachne Wall generator and concentric solid infill.
However, in CAD, you have complete control over the wall thickness in that area and make that a constant multiple of the line width.
For easy CAD, give Tinkercad a go. Or go straight for onshape. It is a learning curve, but it is not so steep and pays out very quickly. Your sanity will thank you for it.
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Use the correct tool. If you’re serious about design, the slicer is not that tool. Refer to the link you included in your post, it is one of many that covers this topic.