Is a sweep technically possible on these shapes?

[celine.raedt]

Hello

I learned about the 'sweep' option thanks to the helpful people on this forum. 

It gives my cutters the strength they need, the shapes I print are between 10 - 50mm in size. 

It works for my basic shapes (like this one 👆🏻) but I have a lot of organic designs and I'm afraid these won't work the way I have in mind. 

I print with a Nozzle 0.4 and this is also the size of the cutting edge in my designs. 

My profile usually looks like this with a top that is somewhere between 4-2mm (depending on what error Fusion is giving me)

For some designs, I managed to create a profile, but the max thickness was only 0.8mm. 
That's not enough for the strength I need, so I think sweeping isn't the best solution for my case. 

[chrisplyler]

Fusion does not allow Sweeps that intersect themselves. So of course, on some of those tight inside corners, the thickness at the top is going to intersect itself, and so the Sweep is going to fail. Imagine trying to take a straight bar of your profile, and bend it into shape. (Assume you could bend it appropriately). It's not going to work, right? You aren't going to be able to get those tight inside corners and curves, because the profile is going to hit itself.

So...the shape you are asking fusion to make with that Sweep isn't possible. Before we can try to help, you need to tell us what shape you would like instead.

[g-andresen]

Hi,

Before you can start sweeping, you must first remove all crossing lines and then change the (narrow) arcs that are critical for overlapping.

günther

[celine.raedt]

Thank you for the clear explanation! 

I imagined it would be impossible too, but I wanted to give it a shot. 

I'm no expert at all. 

What I want to achieve is that the shapes go like this, with a cutting edge of 0.4mm and a top of approx 3mm. 

Anything like one of these two shapes is the goal. 

I know it should be possible, bc. I have examples here, but I just don't manage to find the right tool. 

Again, I'm just a hobbyist, so the solution might be something super basic I'm just not seeing. 

Thank you for taking the time to answer my questions! 

[celine.raedt]

Woops, thank you for pointing that out! 

I didn't see that one (and maybe others)

I will give my sketches an extra check! 

[TheCADWhisperer]

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@celine.raedt wrote:

I will give my sketches an extra check! 

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I would replace splines with tangent arcs and lines as much as possible.

If I did use splines - I would use as few nodes as possible and edit the Handles rather than adding additional nodes.

The best spline has only a beginning point and an endpoint, then curved with the Handles.